rustHow do I get the first character from a string in Rust?
The easiest way to get the first character from a string in Rust is to use the chars() method. This method returns an iterator over the characters of a string. The first character can then be accessed using the next() method.
Example code
let s = "Hello";
let first_char = s.chars().next();
Output example
Some('H')
Code explanation
let s = "Hello": This line declares a string variablesand assigns it the value"Hello".let first_char = s.chars().next(): This line calls thechars()method on thesstring variable, which returns an iterator over the characters of the string. Thenext()method is then called on the iterator, which returns the first character of the string.
Helpful links
More of Rust
- How to perform matrix operations in Rust?
- How to use regex lookbehind in Rust?
- How to use regex lookahead in Rust?
- How to replace all using regex in Rust?
- How to match whitespace with a regex in Rust?
- How to convert a Rust slice of u8 to u32?
- How to match a URL with a regex in Rust?
- Rust map function example
- How to compare two Rust HashMaps?
- How to declare a constant Rust HashMap?
See more codes...