[−][src]Crate tynm
Returns type names with a specifiable number of module segments as a String
.
// === std library === // assert_eq!( std::any::type_name::<Option<String>>(), "core::option::Option<alloc::string::String>", ); // === tynm === // // Simple type name: assert_eq!(tynm::type_name::<Option<String>>(), "Option<String>",); // Type name with 1 module segment, starting from the most significant module. assert_eq!( tynm::type_namem::<Option<String>>(1), "core::..::Option<alloc::..::String>", ); // Type name with 1 module segment, starting from the least significant module. assert_eq!( tynm::type_namen::<Option<String>>(1), "..::option::Option<..::string::String>", ); // Type name with 1 module segment from both the most and least significant modules. #[rustfmt::skip] mod rust_out { pub mod two { pub mod three { pub struct Struct; } } } assert_eq!( tynm::type_namemn::<rust_out::two::three::Struct>(1, 1), "rust_out::..::three::Struct", );
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 |