Function rt_format::format_value

pub fn format_value<V>(
    specifier: &Specifier, 
    value: &V, 
    f: &mut Formatter<'_>
) -> Result where
    V: Display + Debug + Octal + LowerHex + UpperHex + Binary + LowerExp + UpperExp, 

Formats the given value using the given formatter and the given format specification.

Since the implementation of format_value employs the write! macro, the value must implement all of the std::fmt formatting traits. Which trait will actually be used is determined at runtime, based on the contents of the specifier.