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Because decorating an error with more information should not
let you jump through hoops, chainerror
has a quick macro for that.
mstrerror!()
fits right into .map_err()
letting you quickly add
more debug strings.
mstrerror!()
even understands format!()
syntax like println!()
.
use crate::chainerror::*;
{{#include ../examples/tutorial4.rs:2:}}
# #[allow(dead_code)]
# mod chainerror {
{{#includecomment ../src/lib.rs}}
# }