If boost: : swap and STD: : swap are available in the same scope, a call to swap would give precedence to STD: : swap.
如果boost:swap和std: swap位于相同范围内,那么对swap的调用将优先于std: swap。
If boost: : swap and STD: : swap are available in the same scope, a call to swap would give precedence to STD: : swap.
如果boost:swap和std: swap位于相同范围内,那么对swap的调用将优先于std: swap。
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