本文整理了Java中io.opencensus.common.Functions.returnToString()方法的一些代码示例，展示了Functions.returnToString()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Functions.returnToString()方法的具体详情如下：
包路径：io.opencensus.common.Functions
类名称：Functions
方法名：returnToString

Functions.returnToString介绍

[英]A Function that always returns the #toString() value of the input.
[中]始终返回输入的#toString（）值的函数。

代码示例

代码示例来源：origin: census-instrumentation/opencensus-java

private static String attributeValueToString(AttributeValue attributeValue) {
 return attributeValue.match(
   Functions.returnToString(),
   Functions.returnToString(),
   Functions.returnToString(),
   Functions.returnToString(),
   Functions.throwIllegalArgumentException());
}

代码示例来源：origin: census-instrumentation/opencensus-java

@Test
public void testReturnToString() {
 assertThat(Functions.returnToString().apply("input")).isEqualTo("input");
 assertThat(Functions.returnToString().apply(Boolean.FALSE)).isEqualTo("false");
 assertThat(Functions.returnToString().apply(Double.valueOf(123.45))).isEqualTo("123.45");
 assertThat(Functions.returnToString().apply(null)).isEqualTo(null);
}