C++核心准则ES.73:如果没有明显的循环变量，while语句要好于for语句

ES.73: Prefer a while-statement to a for-statement when there is no obvious loop variable

ES.73:如果没有明显的循环变量，while语句要好于for语句

Reason（原因）

Readability.

可读性

Example（示例）

int events = 0;
for (; wait_for_event(); ++events) {  // bad, confusing
    // ...
}

The "event loop" is misleading because the events counter has nothing to do with the loop condition (wait_for_event()). Better

因为event计数和循环条件（wait_for_event()）没有任何关系，“event loop”实际上是一种误导。较好的写法是：

int events = 0;
while (wait_for_event()) {      // better
    ++events;
    // ...
}

Enforcement（实施建议）

Flag actions in for-initializers and for-increments that do not relate to the for-condition.

如果循环变量初始化和增量操作中的操作和循环条件没有任何关系，进行提示。

原文链接

https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#es73-prefer-a-while-statement-to-a-for-statement-when-there-is-no-obvious-loop-variable