All assignment operators return the value that is assigned to the left operand.
所有的赋值运算符都返回赋给左操作数的值。
All assignment operators return the value that is assigned to the left operand.
所有指派运算子传回的值，都是指派给左运算元的值。
The left operand is a string expression, and the right operand is a string containing the pattern to be used for matching.
左侧操作数为字符串表达式，右侧操作数为包含匹配所用模式的字符串。
The left operand is a string expression, and the right operand is a string containing the pattern to be used for matching.
左侧操作数为字符串表达式，右侧操作数为包含匹配所用模式的字符串。
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