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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ```scala object App{ def main(args: Array[String]): Unit = { // s插值器:允許將變量引用、表達式直接插入字面字符中 val name = "James" println(s"Hello, $name") // Hello, James println(s"1+1 = ${1+1}") // 1+1 = 2 // f插值器 val height = 1.9d println(f"$name%s is $height%2.2f meters tall.") // James is 1.90 meters tall. // raw插值器 println(s"a\nb") // 輸出換行 println(raw"a\nb") // 輸出原始字符,對\n不轉義 a\nb } } ``` `s`, `f` 和 `raw`,其本質都是定義在 StringContext 中的方法。在 2.11 以前的版本中,字符串插值對模式匹配語句不適用。 ```scala s"Hello, $name" 等價于 StringContext("Hello, ", "").s(name) s" $name Hello," 等價于 StringContext( "","Hello, ").s(name) s"hi $name Hello," 等價于 StringContext(" hi"," Hello,").s(name) ``` 可以發現,所謂字符串插值便是使用了隱式轉換功能實現的,這一點可以在后面學到隱式轉換相關知識點時再進行回顧。
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