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",
);
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.
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.