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format_int

re_format

Function format_int 

Source 
pub fn format_int<Int>(number: Int) -> String
where
    Int: Display + PartialOrd + Zero + UnsignedAbs,
    Int::Unsigned: Display + Unsigned,
Expand description

Pretty format a signed number by using thousands separators for readability.

The returned value is for human eyes only, and can not be parsed by the normal usize::from_str function.