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 match whitespace with a regex in Rust?
- How to replace strings using Rust regex?
- How to use Unicode in a regex in Rust?
- Example of struct private field in Rust
- How to replace a capture group using Rust regex?
- How to match a URL with a regex in Rust?
- How to replace all matches using Rust regex?
- How to get a capture group using Rust regex?
- How to split a string with Rust regex?
- How to create a Rust HashMap from a vec?
See more codes...