Is it possible to print a number formatted with thousand separator in Rust?

For instance

println!("{}", 10_000_000);

results in

10000000


whereas I'd like to format it to look something like

10,000,000


I went through the fmt module documentation, but there's nothing to cover this particular situation. I thought something like this would work

println!("{:,i}", 10_000_000);

but it throws an error

invalid format string: expected }, found ,


The num_format crate will solve this issue for you. Add your locale and it will do the magic.

Stack Overflow Q#26998485, score: 29