Protocol std::builtins::internal::IntegerParsable

protocol IntegerParsable<Self> { ... }
Self: Integer

Mixin for parsing integers from strings.

Provided methods

fn parse(s: &[u8]) -> Option<Self>

source
Parses the integer from a base-10 string.
If the string does not represent a valid integer, Option::none() is returned.

Example
```
assert_eq!(i32::parse("10"), Option::some(10));
assert_eq!(i32::parse("foo"), Option::none());
Run this example
```

fn parse_with_radix(s: &[u8], radix: u16) -> Option<Self>

Parses the integer from a string in a given base.

If the string does not represent a valid integer in the given base, Option::none() is returned.

Example

assert_eq!(i32::parse_with_radix("10", 2), Option::some(2));
assert_eq!(u64::parse_with_radix("deadbeef", 16), Option::some(0xdeadbeefu64));
assert_eq!(i32::parse_with_radix("foo", 10), Option::none());
Run this example