Crate trim_margin [−] [src]
This crate is intended to ease the use of multi-line strings in Rust. When embedding strings with multiple lines in Rust all whitespaces, tabs, etc. are preserved even if they are just used for layouting one's code nicely.
fn main() { println!("-----------------------"); let misrepresented_multiline_string = " This is string spans over multiple lines, but its rendering preserves all whitespaces. Which is not what we usually intend in this case. "; println!("{}", misrepresented_multiline_string); println!("-----------------------"); println!("-----------------------"); let correctly_layouted_string = "For displaying the a multiline strin properly it would need to be layouted like this. Which is not very nice."; println!("{}", correctly_layouted_string); println!("-----------------------"); }
The trim-margin
crate supports you with the proper layouting.
By introducing a margin in the multi-line string the trim_margin
method can filter out unwanted whitespaces and blank lines.
extern crate trim_margin; use trim_margin::MarginTrimmable; fn main() { let multiline_string_with_margin = " |This string has a margin |indicated by the '|' character. | |The following method call will remove ... | * a blank first/last line | * blanks before the margin prefix | * the margin prefix itself ".trim_margin().unwrap(); println!("{}", multiline_string_with_margin); }
Traits
MarginTrimmable |
An interface for removing the margin of multi-line string-like objects. |