Python:

Too slow! list operations don't return the list, so you can't do list.append(4).append(5). (I mean a reference to the same list, not a copy). This is a minor gripe; it's only come up a few times. statements don't return values (if, print, while, for, etc). This is only a problem when dealing with lambdas. lambdas can only be one expression. There's no real need for this restriction, as they are equivalent to functions in every other way. What if I want a button press event which calls two functions? I'd need to create a named function to supply that functionality to an action listener, while doing "lambda: f1(); f2()" would not hurt. you can only put standard a-zA-Z_0-9 as names. Having functions like "true?" and "+" would be great. Of course, this could lead to terrible obfuscation, but I'm not saying we immediately rename all functions to "p@$%3". Which do you find clearer to read: "dec2bin" or "dec->bin"? ("store_results" or "storeResults") or "store-results"?

Erlang

没有静态推断 就像在哈斯凯尔发现的一样。这 会导致运行时错误和一个 有认真写代码还是使用 透析器(1)发现 差异。动态类型是 慢的:也被认为是慢的; 与C、Java等语言相比，它几乎是未知的; 的lists(3)模块有时相当精简 我缺少用于列表处理的有用函数 (就像在数据。例如Haskell中的List); 让我在每句话的结尾都加上 在从句中，和。最后是后者。

c# 4.0

“动态”关键字，被滥用的时机已经成熟。如果你想要/需要使用反射，使用并让它明显地显示你正在使用它，不要试图用动态来伪装它。

帕斯卡对象:

There's a lot of jumping back and forth in the file you're editing since the interface and implementation are split into two parts but still jammed into the same file. Dynamic indexing of arrays, strings start at 1, you specify the starting index when declaring fixed arrays and dynamically allocated arrays always start at 0. Classes and objects (not to speak of interfaces) are bolted on top of the language and among other things can't be stack allocated like records can. When calling functions without parameters the () are optional, leading to a lot of pain when you are dealing with function pointers or trying to refer to the result of a function using the function name. Parameter lists can't handle fixed array types or function pointer types without external type definitions.

这仅仅是一种语言，一个标准库的遗憾借口，而脆弱的IDE应该有自己的列表。

PHP:

荒谬的assert()函数…它对里面的代码运行eval() ?>标签删除了它后面的换行符?! 奇怪的数字字符串处理(尝试将它们作为数组键) 令人痛苦的unicode支持似乎将不再被PHP 6解决 入门成本低意味着95%的人给PHP程序员起了一个可怕的名字——试图在这5%中找到一个人来雇佣是疯狂的。

C++

cryptic error-messages when templates are involved lack of template constraints (many cases can be worked around with template metaprogramming, but this will result in unreadable code (at least for average programmers) in most cases) pointer to member-function syntax c++ standards committee should release offical standards more often (or at least release separate updates to the standard library itself), i mean really TR1 was released 2005, and we still dont have a shared_ptr, bind and alike in the standard library. -