[−][src]Crate tynm
Returns type names with a specifiable number of module segments as a String
.
#[rustfmt::skip] assert_eq!( std::any::type_name::<Option<String>>(), "core::option::Option<alloc::string::String>" ); #[rustfmt::skip] let tuples = vec![ (tynm::type_name::<Option<String>>(), "Option<String>"), (tynm::type_namem::<Option<String>>(1), "core::..::Option<alloc::..::String>"), (tynm::type_namen::<Option<String>>(1), "..::option::Option<..::string::String>"), // 1 segment from most and least significant modules. (tynm::type_namemn::<rust_out::two::three::Struct>(1, 1), "rust_out::..::three::Struct"), // traits (tynm::type_name::<dyn core::fmt::Debug>(), "dyn Debug"), ]; tuples .iter() .for_each(|(left, right)| assert_eq!(left, right));
Motivation
The std::any::type_name
function stabilized in Rust 1.38 returns the fully qualified type
name with all module segments. This can be difficult to read in error messages, especially for
type-parameterized types.
Often, the simple type name is more readable, and enough to distinguish the type referenced in an error.
Structs
TypeNameDisplay | Helper struct for printing type names directly to |
Enums
TypeName | Organizes type name string into distinct parts. |
Functions
type_name | Returns the simple type name. |
type_namem | Returns the type name with at most |
type_namemn | Returns the type name with |
type_namen | Returns the type name with at most |