字面值后的尾随字符标志着它的类型。
A trailing character after a literal value establishes its type.
注意如果编译器能够正确地识别类型,就不必使用尾随字符。
Note that you don' t need to use the trailing character when the compiler can figure out the appropriate type.
通过使用s命令并替换一个空替换字符,您可以删除尾随空格。
You can remove trailing blanks from a file by using the s command and substituting a null replacement.
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