更大的S：更好的字符串字面量

每个人都厌倦了输入 "foo"._string() 和 String::from("bar") 这类东西。也许你已经尝试过 Big S，这是一个只有一个函数的单行有用crate。使用"Big S"，你可以这样做

assert_eq!(S("foo"), "foo".to_string())

不错，但事情可以更好，使用 更大的S，同样只有一个宏 S。

用法

空字符串

• Big S: S)
• 更大的S: S!)

字符串

• Big S: S)
• 更大的S: S!)

连接字符串

这一项是新的。

• 常见： foo.to_string() + "bar"
• Big S: S + "bar"
• 更大的S: S! "foo" "bar"

如果你想要用空格分隔字符串，你可以这样做

assert_eq!(S!("hello", "world"), "hello world".to_string());

这对于处理大量的字符串字面量特别有帮助

assert_eq!(
    S!(
        "Imagine how stupid it will be to include a very long paragraph literal in rust code.",
        "With even bigger s, text has much more readability.",
        "Have you ever seen a very very long String literal in your code?"
        "Well, I have. I guess I won't see that any more.",
    ),
    "Imagine how stupid it will be to include a very long paragraph literal in rust code. With even bigger s, text has much more readability. Have you ever seen a very very long String literal in your code? Well, I have. I guess I won't see that any more.".to_string()
)