mirror of
https://github.com/rust-lang/rust-clippy
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38d4ac7cea
Discussion previously happened in https://github.com/rust-lang/rust/pull/43498
210 lines
8.1 KiB
Text
210 lines
8.1 KiB
Text
error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:32:5
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LL | x.field.map(do_nothing);
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| ^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(x_field) = x.field { do_nothing(...) }`
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= note: `-D clippy::option-map-unit-fn` implied by `-D warnings`
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error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:34:5
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LL | x.field.map(do_nothing);
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| ^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(x_field) = x.field { do_nothing(...) }`
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error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:36:5
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LL | x.field.map(diverge);
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| ^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(x_field) = x.field { diverge(...) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:42:5
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LL | x.field.map(|value| x.do_option_nothing(value + captured));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { x.do_option_nothing(value + captured) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:44:5
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LL | x.field.map(|value| { x.do_option_plus_one(value + captured); });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { x.do_option_plus_one(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:47:5
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LL | x.field.map(|value| do_nothing(value + captured));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { do_nothing(value + captured) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:49:5
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LL | x.field.map(|value| { do_nothing(value + captured) });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { do_nothing(value + captured) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:51:5
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LL | x.field.map(|value| { do_nothing(value + captured); });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { do_nothing(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:53:5
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LL | x.field.map(|value| { { do_nothing(value + captured); } });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { do_nothing(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:56:5
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LL | x.field.map(|value| diverge(value + captured));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { diverge(value + captured) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:58:5
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LL | x.field.map(|value| { diverge(value + captured) });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { diverge(value + captured) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:60:5
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LL | x.field.map(|value| { diverge(value + captured); });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { diverge(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:62:5
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LL | x.field.map(|value| { { diverge(value + captured); } });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { diverge(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:67:5
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LL | x.field.map(|value| { let y = plus_one(value + captured); });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { let y = plus_one(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:69:5
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LL | x.field.map(|value| { plus_one(value + captured); });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { plus_one(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:71:5
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LL | x.field.map(|value| { { plus_one(value + captured); } });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { plus_one(value + captured); }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:74:5
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LL | x.field.map(|ref value| { do_nothing(value + captured) });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(ref value) = x.field { do_nothing(value + captured) }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:77:5
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LL | x.field.map(|value| { do_nothing(value); do_nothing(value) });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { ... }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:79:5
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LL | x.field.map(|value| if value > 0 { do_nothing(value); do_nothing(value) });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { ... }`
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:83:5
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LL | x.field.map(|value| {
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| _____^
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| |_____|
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| ||
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LL | || do_nothing(value);
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LL | || do_nothing(value)
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LL | || });
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| ||______^- help: try this: `if let Some(value) = x.field { ... }`
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| |_______|
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error: called `map(f)` on an Option value where `f` is a unit closure
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--> $DIR/option_map_unit_fn.rs:87:5
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LL | x.field.map(|value| { do_nothing(value); do_nothing(value); });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(value) = x.field { ... }`
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error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:90:5
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LL | Some(42).map(diverge);
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| ^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(_) = Some(42) { diverge(...) }`
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error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:91:5
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LL | "12".parse::<i32>().ok().map(diverge);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(_) = "12".parse::<i32>().ok() { diverge(...) }`
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error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:92:5
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LL | Some(plus_one(1)).map(do_nothing);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(_) = Some(plus_one(1)) { do_nothing(...) }`
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error: called `map(f)` on an Option value where `f` is a unit function
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--> $DIR/option_map_unit_fn.rs:96:5
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LL | y.map(do_nothing);
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| ^^^^^^^^^^^^^^^^^-
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| help: try this: `if let Some(_y) = y { do_nothing(...) }`
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error: aborting due to 25 previous errors
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