在你看来,你遇到过的最令人惊讶、最怪异、最奇怪或最“WTF”的语言特性是什么?

请每个回答只回答一个特征。


当前回答

任何东西都会自动将任何类名和成员名复数或单数。

例如,Linq-to-Sql

其他回答

Perl有yada yada操作符(…)。

Perl 6传统的所谓“yada yada”操作符是标记未实现代码的快捷方式:

if ($condition) { ... }

if ($condition) { die "not yet implemented" }

A very tiny thing that annoyed me in COBOL was that there was no dedicated modulo operation. Instead you could do a division specifying that you only wanted whole number results and store the rest in a different variable. Since COBOL is very sensitive when it comes to variables that means that you ended up with a variable you didn't really need, i.e. the actual result of the division. This is the story of how I once named a variable "USELESS" - that was the most appropriate name I could think of.

Python的三元操作符

在Python中,C三元操作符(c++示例:bool isNegative = i < 0 ?True: false;)可用作语法糖:

>>> i = 1
>>> "It is positive" if i >= 0 else "It is negative!"
'It is positive'
>>> i = -1
>>> "It is positive" if i >= 0 else "It is negative!"
'It is negative!'

这并不奇怪,而是一种特征。奇怪的是,与C中的顺序(条件?答:b)。

早期的FORTRAN,空格不重要。(anti-Python !)

DO 20 I = 1, 10

含义:从这里循环到第20行,I从1到10。

DO 20 I = 1. 10

含义:将1.10分配给名为DO20I的变量。

有传言说这个漏洞毁了一个太空探测器。

在ColdFusion中,文本值自动转换为各种数据类型,用于各种目的。我遇到了一个奇怪的问题,“00A”和“000”被返回为相等。事实证明,ColdFusion将“00A”解释为时间,转换为某种数字时间格式,并将其转换为0。“000”被转换为0。所以它们都被认为是相等的。那时我学习了字符串的比较函数。