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fix: format example code

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This commit is contained in:
YuKun Liu 2022-01-08 00:16:28 +08:00
parent 0742deed82
commit 347a11c8c4
1 changed files with 79 additions and 67 deletions
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146
examples/calculator.rs
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@ -17,74 +17,8 @@ fn main() {
}); });
} }
fn calc_val(val: String) -> f64 {
// println!("{:?}", val);
let mut result;
let mut temp = String::new();
let mut operation = "+".to_string();
let mut start_index = 0;
let mut temp_value;
let mut fin_index = 0;
if &val[0..1] == "-" {
temp_value = String::from("-");
fin_index = 1;
start_index += 1;
} else {
temp_value = String::from("");
}
for c in val[fin_index..].chars() {
if c == '+' || c == '-' || c == '*' || c == '/' {
break;
}
temp_value.push(c);
start_index += 1;
}
result = temp_value.parse::<f64>().unwrap();
if start_index + 1 >= val.len() {
return result;
}
for c in val[start_index..].chars() {
// println!("{:?}", c);
if c == '+' || c == '-' || c == '*' || c == '/' {
if temp != "" {
match &operation as &str {
"+" => {result += temp.parse::<f64>().unwrap();},
"-" => {result -= temp.parse::<f64>().unwrap();},
"*" => {result *= temp.parse::<f64>().unwrap();},
"/" => {result /= temp.parse::<f64>().unwrap();},
_ => unreachable!(),
};
}
operation = c.to_string();
temp = String::new();
} else {
temp.push(c);
}
}
if temp != "" {
match &operation as &str {
"+" => {result += temp.parse::<f64>().unwrap();},
"-" => {result -= temp.parse::<f64>().unwrap();},
"*" => {result *= temp.parse::<f64>().unwrap();},
"/" => {result /= temp.parse::<f64>().unwrap();},
_ => unreachable!(),
};
}
result
}
fn app(cx: Scope) -> Element { fn app(cx: Scope) -> Element {
let display_value: UseState<String> = use_state(&cx, || String::from("0"));
let display_value: UseState<String> = use_state(&cx,|| String::from("0"));
let input_digit = move |num: u8| { let input_digit = move |num: u8| {
if display_value.get() == "0" { if display_value.get() == "0" {
@ -208,3 +142,81 @@ fn app(cx: Scope) -> Element {
)) ))
} }
fn calc_val(val: String) -> f64 {
let mut result;
let mut temp = String::new();
let mut operation = "+".to_string();
let mut start_index = 0;
let mut temp_value;
let mut fin_index = 0;
if &val[0..1] == "-" {
temp_value = String::from("-");
fin_index = 1;
start_index += 1;
} else {
temp_value = String::from("");
}
for c in val[fin_index..].chars() {
if c == '+' || c == '-' || c == '*' || c == '/' {
break;
}
temp_value.push(c);
start_index += 1;
}
result = temp_value.parse::<f64>().unwrap();
if start_index + 1 >= val.len() {
return result;
}
for c in val[start_index..].chars() {
if c == '+' || c == '-' || c == '*' || c == '/' {
if temp != "" {
match &operation as &str {
"+" => {
result += temp.parse::<f64>().unwrap();
}
"-" => {
result -= temp.parse::<f64>().unwrap();
}
"*" => {
result *= temp.parse::<f64>().unwrap();
}
"/" => {
result /= temp.parse::<f64>().unwrap();
}
_ => unreachable!(),
};
}
operation = c.to_string();
temp = String::new();
} else {
temp.push(c);
}
}
if temp != "" {
match &operation as &str {
"+" => {
result += temp.parse::<f64>().unwrap();
}
"-" => {
result -= temp.parse::<f64>().unwrap();
}
"*" => {
result *= temp.parse::<f64>().unwrap();
}
"/" => {
result /= temp.parse::<f64>().unwrap();
}
_ => unreachable!(),
};
}
result
}