mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-23 03:23:33 +00:00
461 lines
18 KiB
Text
461 lines
18 KiB
Text
error: defining a method called `add` on this type; consider implementing the `std::ops::Add` trait or choosing a less ambiguous name
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--> $DIR/methods.rs:31:5
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31 | pub fn add(self, other: T) -> T { self }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::should-implement-trait` implied by `-D warnings`
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error: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
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--> $DIR/methods.rs:42:17
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42 | fn into_u16(&self) -> u16 { 0 }
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| ^^^^^
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= note: `-D clippy::wrong-self-convention` implied by `-D warnings`
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error: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
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--> $DIR/methods.rs:44:21
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44 | fn to_something(self) -> u32 { 0 }
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| ^^^^
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error: methods called `new` usually take no self; consider choosing a less ambiguous name
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--> $DIR/methods.rs:46:12
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46 | fn new(self) -> Self { unimplemented!(); }
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| ^^^^
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error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
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--> $DIR/methods.rs:114:13
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114 | let _ = opt.map(|x| x + 1)
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| _____________^
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115 | |
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116 | | .unwrap_or(0); // should lint even though this call is on a separate line
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| |____________________________^
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= note: `-D clippy::option-map-unwrap-or` implied by `-D warnings`
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= note: replace `map(|x| x + 1).unwrap_or(0)` with `map_or(0, |x| x + 1)`
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error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
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--> $DIR/methods.rs:118:13
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118 | let _ = opt.map(|x| {
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| _____________^
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119 | | x + 1
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120 | | }
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121 | | ).unwrap_or(0);
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| |____________________________^
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error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
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--> $DIR/methods.rs:122:13
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122 | let _ = opt.map(|x| x + 1)
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| _____________^
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123 | | .unwrap_or({
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124 | | 0
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125 | | });
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| |__________________^
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error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:127:13
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127 | let _ = opt.map(|x| Some(x + 1)).unwrap_or(None);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
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error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:129:13
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129 | let _ = opt.map(|x| {
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| _____________^
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130 | | Some(x + 1)
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131 | | }
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132 | | ).unwrap_or(None);
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| |_____________________^
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error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:133:13
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133 | let _ = opt
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| _____________^
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134 | | .map(|x| Some(x + 1))
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135 | | .unwrap_or(None);
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| |________________________^
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= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
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error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
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--> $DIR/methods.rs:141:13
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141 | let _ = opt.map(|x| x + 1)
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| _____________^
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142 | |
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143 | | .unwrap_or_else(|| 0); // should lint even though this call is on a separate line
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| |____________________________________^
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= note: `-D clippy::option-map-unwrap-or-else` implied by `-D warnings`
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= note: replace `map(|x| x + 1).unwrap_or_else(|| 0)` with `map_or_else(|| 0, |x| x + 1)`
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error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
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--> $DIR/methods.rs:145:13
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145 | let _ = opt.map(|x| {
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| _____________^
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146 | | x + 1
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147 | | }
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148 | | ).unwrap_or_else(|| 0);
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| |____________________________________^
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error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
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--> $DIR/methods.rs:149:13
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149 | let _ = opt.map(|x| x + 1)
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| _____________^
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150 | | .unwrap_or_else(||
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151 | | 0
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152 | | );
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| |_________________^
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error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:158:13
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158 | let _ = opt.map_or(None, |x| Some(x + 1));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `opt.and_then(|x| Some(x + 1))`
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= note: `-D clippy::option-map-or-none` implied by `-D warnings`
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error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
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--> $DIR/methods.rs:160:13
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160 | let _ = opt.map_or(None, |x| {
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| _____________^
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161 | | Some(x + 1)
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162 | | }
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163 | | );
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| |_________________^
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help: try using and_then instead
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160 | let _ = opt.and_then(|x| {
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161 | Some(x + 1)
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162 | });
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error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
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--> $DIR/methods.rs:173:13
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173 | let _ = res.map(|x| x + 1)
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| _____________^
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174 | |
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175 | | .unwrap_or_else(|e| 0); // should lint even though this call is on a separate line
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| |_____________________________________^
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= note: `-D clippy::result-map-unwrap-or-else` implied by `-D warnings`
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= note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `ok().map_or_else(|e| 0, |x| x + 1)`
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error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
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--> $DIR/methods.rs:177:13
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177 | let _ = res.map(|x| {
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| _____________^
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178 | | x + 1
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179 | | }
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180 | | ).unwrap_or_else(|e| 0);
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| |_____________________________________^
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error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
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--> $DIR/methods.rs:181:13
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181 | let _ = res.map(|x| x + 1)
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| _____________^
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182 | | .unwrap_or_else(|e|
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183 | | 0
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184 | | );
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| |_________________^
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error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
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--> $DIR/methods.rs:244:13
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244 | let _ = v.iter().filter(|&x| *x < 0).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::filter-next` implied by `-D warnings`
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= note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)`
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error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
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--> $DIR/methods.rs:247:13
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247 | let _ = v.iter().filter(|&x| {
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| _____________^
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248 | | *x < 0
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249 | | }
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250 | | ).next();
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| |___________________________^
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error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:262:13
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262 | let _ = v.iter().find(|&x| *x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::search-is-some` implied by `-D warnings`
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= note: replace `find(|&x| *x < 0).is_some()` with `any(|&x| *x < 0)`
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error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:265:13
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265 | let _ = v.iter().find(|&x| {
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| _____________^
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266 | | *x < 0
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267 | | }
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268 | | ).is_some();
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| |______________________________^
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error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:271:13
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271 | let _ = v.iter().position(|&x| x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: replace `position(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
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error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:274:13
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274 | let _ = v.iter().position(|&x| {
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| _____________^
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275 | | x < 0
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276 | | }
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277 | | ).is_some();
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| |______________________________^
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error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:280:13
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280 | let _ = v.iter().rposition(|&x| x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: replace `rposition(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
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error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:283:13
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283 | let _ = v.iter().rposition(|&x| {
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| _____________^
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284 | | x < 0
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285 | | }
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286 | | ).is_some();
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| |______________________________^
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:318:22
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318 | with_constructor.unwrap_or(make());
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)`
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= note: `-D clippy::or-fun-call` implied by `-D warnings`
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error: use of `unwrap_or` followed by a call to `new`
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--> $DIR/methods.rs:321:5
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321 | with_new.unwrap_or(Vec::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_new.unwrap_or_default()`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:324:21
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324 | with_const_args.unwrap_or(Vec::with_capacity(12));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Vec::with_capacity(12))`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:327:14
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327 | with_err.unwrap_or(make());
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| make())`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:330:19
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330 | with_err_args.unwrap_or(Vec::with_capacity(12));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| Vec::with_capacity(12))`
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error: use of `unwrap_or` followed by a call to `default`
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--> $DIR/methods.rs:333:5
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333 | with_default_trait.unwrap_or(Default::default());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_trait.unwrap_or_default()`
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error: use of `unwrap_or` followed by a call to `default`
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--> $DIR/methods.rs:336:5
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336 | with_default_type.unwrap_or(u64::default());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_type.unwrap_or_default()`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:339:14
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339 | with_vec.unwrap_or(vec![]);
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| vec![])`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:344:21
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344 | without_default.unwrap_or(Foo::new());
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| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(Foo::new)`
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error: use of `or_insert` followed by a function call
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--> $DIR/methods.rs:347:19
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347 | map.entry(42).or_insert(String::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
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error: use of `or_insert` followed by a function call
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--> $DIR/methods.rs:350:21
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350 | btree.entry(42).or_insert(String::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:353:21
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353 | let _ = stringy.unwrap_or("".to_owned());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
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error: `error_code` is shadowed by `123_i32`
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--> $DIR/methods.rs:387:9
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387 | let error_code = 123_i32;
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| ^^^^^^^^^^
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= note: `-D clippy::shadow-unrelated` implied by `-D warnings`
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note: initialization happens here
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--> $DIR/methods.rs:387:22
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387 | let error_code = 123_i32;
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| ^^^^^^^
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note: previous binding is here
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--> $DIR/methods.rs:374:9
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374 | let error_code = 123_i32;
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| ^^^^^^^^^^
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:376:26
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376 | with_none_and_format.expect(&format!("Error {}: fake error", error_code));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
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= note: `-D clippy::expect-fun-call` implied by `-D warnings`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:379:26
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379 | with_none_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:389:25
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389 | with_err_and_format.expect(&format!("Error {}: fake error", error_code));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:392:25
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392 | with_err_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:407:17
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407 | Some("foo").expect({ &format!("error") });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = { &format!("error") }; panic!(msg) }))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:408:17
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408 | Some("foo").expect(format!("error").as_ref());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("error"))`
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error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:419:23
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419 | let bad_vec = some_vec.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-nth` implied by `-D warnings`
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:420:26
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420 | let bad_slice = &some_vec[..].iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:421:31
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421 | let bad_boxed_slice = boxed_slice.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:422:29
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422 | let bad_vec_deque = some_vec_deque.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:427:23
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427 | let bad_vec = some_vec.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:430:26
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430 | let bad_slice = &some_vec[..].iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:433:29
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433 | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:445:13
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445 | let _ = some_vec.iter().skip(42).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-skip-next` implied by `-D warnings`
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:446:13
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446 | let _ = some_vec.iter().cycle().skip(42).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:447:13
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447 | let _ = (1..10).skip(10).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:448:14
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448 | let _ = &some_vec[..].iter().skip(3).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: used unwrap() on an Option value. If you don't want to handle the None case gracefully, consider using expect() to provide a better panic message
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--> $DIR/methods.rs:457:13
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457 | let _ = opt.unwrap();
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| ^^^^^^^^^^^^
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= note: `-D clippy::option-unwrap-used` implied by `-D warnings`
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error: aborting due to 57 previous errors
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