记住三元运算符语法 [英] Remembering the Ternary Operator Syntax

问题描述

有人记得标准的三元语法吗？

Anyone have a good trick to remember the standard ternary syntax?

具体来说，？或：排在最前面。这些年来，我一直在退缩。

Specifically whether the '?' or ':' comes first. I have consistently gotten this backwards over the years.

推荐答案

您要检查的条件有点像一个问题，所以这个问题标记优先。

The condition you are checking is kind of like a question, so the question mark comes first.

x > 0 ? 1 : 0

将此语句视为三个英语句子： x是否大于0？然后1否则，0。语句中的每个子句都有一个句子。

Think of this statement as three English sentences: "Is x greater than 0? Then 1. Else, 0." You have one sentence for each clause in the statement.

谓词：

x > 0 ? /* Is x greater than 0? */

真实分支：

1 /* Then 1. */

false分支：

: 0 /* Else, 0. */

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