While the concat! macro in std is useful to create a static string slice (&'static str) from literals, it cannot set a separator for those. This crate therefore provides another concat! macro to deal with that situation.
rust
assert_eq!("test10btrue", concat_with::concat!("test", 10, 'b', true));
assert_eq!("test, 10, b, true", concat_with::concat!(with ", ", "test", 10, 'b', true));
assert_eq!("test\n10\nb\ntrue", concat_with::concat_line!("test", 10, 'b', true));
Prefixes and suffixes can also be added.
rust
assert_eq!("Someone says: Hello.\nSomeone says: Nice to meet you!", concat_with::concat_line!(prefix "Someone says: ", "Hello.", "Nice to meet you!"));
The concat_impl! macro can be used to create your own macros like concat_line! which concatenates literals separated by a specific literal.
```rust
pub use concatwith::{concat, concatimpl}; // re-export concat! and concat_impl! if your custom macros use #[macro_export]
concatimpl! {
#[macroexport]
/// Concatenates literals into a static string slice separated by a comma and a whitespace, ,. Prefixes and suffixes can also be added.
concatwithcomma => ", ",
#[macroexport]
/// Concatenates literals into a static string slice separated by a colon, :. Prefixes and suffixes can also be added.
concatwith_colon => ':',
}
asserteq!("test, 10, b, true", concatwithcomma!("test", 10, 'b', true)); asserteq!("test:10:b:true", concatwithcolon!("test", 10, 'b', true)); ```
https://crates.io/crates/concat-with
https://docs.rs/concat-with