Simple, dynamic, Python-styled string formatting (Only support String,
{key} patterns).
Escape like {{ or }}.
bash
cargo add dyn_formatting@2.0.0
DynamicFormatError::KeyError while the key in the brackets
is not found in dictionary.DynamicFormatError::TokenError while there is any
unmatched bracket ({ or })Rust
use dyn_formatting::dynamic_format;
assert_eq!(
dynamic_format(
"I'm {name}. I'm {age} years old now.",
&[("name", "ABC"), ("age", "20")].into()
).unwrap(),
"I'm ABC. I'm 20 years old now.".to_string()
);
Rust
use dyn_formatting::dynamic_format;
use std::collections::HashMap;
let value_age = (15).to_string(); // Make lifetime long enough
let dictionary = HashMap::from([
("age", value_age.as_str()),
]);
assert_eq!(
dynamic_format("{{{age} }}{age}", &dictionary).unwrap(),
"{15 }15"
)
Rust
use dyn_formatting::dynamic_format;
assert!(
dynamic_format(
"I'm {name}. I'm {age} years old now.",
&[("name", "ABC")].into()
).is_err() // Key error
);
Rust
use dyn_formatting::dynamic_format;
assert!(
dynamic_format(
"I'm {name{name}}.",
&[("name", "ABC")].into()
).is_err() // Token error: '{' unmatched.
);