'How to trim whitespaces from head and tail of a string? [duplicate]

How to trim whitespaces from head and tail of a string (&str) in Rust ?

let a = " Some text here   ";

rust

Solution 1:^[1]

By calling trim(). Like,

let a = " Some text here   ";
println!("'{}'", a.trim());

Outputs

'Some text here'

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Solution	Source
Solution 1	Elliott Frisch