If the provider starts returning values outside that assumed domain, it will likely have an adverse effect on the existing consumers.
如果提供者开始返回预定值域之外的值，则可能对现有使用者造成负面的影响。
A loop does not have the overhead of passing arguments, initializing additional storage, and returning values.
回圈不会有传递引数、初始化其他储存区和传回值的负荷。
Returning values from functions is discussed in detail on Day 4, "Expressions and Statements."
函数返回值将在第4天“表达式和语句”中详细讨论。
Returning values from functions is discussed in detail on Day 4, "Expressions and Statements."
函数返回值将在第4天“表达式和语句”中详细讨论。
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