Your normal habit when passing an argument to a function should be to pass by const reference.
用常量引用给一个函数传递参数,是一种好的习惯。
Your normal habit when passing an argument to a function should be to pass by const reference.
当给函数传递参数时,你要养成的良好习惯是传递常量引用。
Your normal habit when passing an argument to a function should be to pass by const reference.
当给函数传递参数时,你要养成的良好习惯是传递常量引用。
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