惯用的方法来检查非零 [英] Idiomatic way to check for non-zero
本文介绍了惯用的方法来检查非零的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
当我希望检查C中的值是否为0时，该怎么习惯?
When I wish to check if a value is 0 in C, how is it idiomatically done?
-
if (!num) -
if (num == 0)
if (!num)if (num == 0)
推荐答案
虽然这是一个品味问题，但我发现它很大程度上取决于意图.如果将该值用作布尔值，则!没问题.如果值在计算某些事情，那么平等就更有意义了.
While this is a matter of taste, I find it pretty much depends on intention. If the value is to be used as a boolean, ! is alright. If the value is counting something the equality makes more sense.
if (!isVisible) {...}
if (isVisible == 0) {...} // Intention not as clear as line above.
if (numberOfItems == 0) {...}
if (!numberOfItems) {...} // Intention not as clear as line above.
这篇关于惯用的方法来检查非零的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
