Crate custom_format

This crate extends the standard formatting syntax with custom format specifiers, by providing custom formatting macros.

It uses : (a space and a colon) as a separator before the format specifier, which is not a syntax currently accepted and allows supporting standard specifiers in addition to custom specifiers.

This library comes in two flavors, corresponding to the following features:

• compile-time

  The set of possible custom format specifiers is defined at compilation, so invalid specifiers can be checked at compile-time. This allows the library to have the same performance as when using the standard library formatting traits. See the compile_time::CustomFormat trait.

• runtime

  The formatting method dynamically checks the format specifier at runtime for each invocation. This is a slower version, but has a lower MSRV for greater compatibility. See the runtime::CustomFormat trait.

Modules

compile_time

Provides types associated to compile-time formatting.

runtime

Provides types associated to runtime formatting.

Macros

custom_formatter

Helper macro for constructing a new CustomFormatter value from a format specifier