A URI Template is a string value that includes a mixture of literalcharacter sequences and specialized tokens that, when processed with a set of input values, yields a URI. For example.
URI模板是一个字符串值,由文字字符序列和特殊的标记组成,可以将一系列输入值转换为一个URI。
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White space can appear within a preprocessing token only as a part of a header name or between the quotation characters in a characterliteral or string literal.