Lua:

I understand the reasons, but seriously. Variables should be local by default, with a global keyword, not vice versa. I'm in general not a huge fan of the do/end style semantics. I much prefer C-style braces. Dynamic typing. I know, some of you go "Huh?" but I've been entirely spoiled by knowing exactly what type of data will be in a given variable. Constant if (type(var) == "string") then stuff() end is a pain. Variables need not be defined before they're used. I would much rather be explicit about what I'm trying to do than risk a typo causing what I like to call "wacky beans".

PHP:

同样，动态类型。 缺少闭包。你可以用$function($arg);但这不算。 同样，变量可以在定义之前使用。我有一个个人策略，总是在使用任何变量之前显式地将其初始化为已知值，并且我将其扩展到我可以控制的任何最佳实践文档。

C / C + +:

头疼=脖子疼。 不支持闭包。(我对c++ 0x很兴奋，因为c++ 0x有这些功能。) 静态类型。“等等，”你说。“你刚才说你不喜欢动态类型!”是的，我确实这么说过。但是静态类型也会让人头疼。(如果有选择的话，我仍然会选择静态类型。)最理想的情况是，我希望语言默认是静态类型的，但也支持动态类型。(我还想要一匹小马，500亿美元，还有整个世界。)

c# / .net:

Classes should be sealed by default There should be no lock statement - instead, you should have specific locking objects, and there should be methods such as Acquire which return disposable lock tokens. Corollary: there shouldn't be a monitor for every object. GetHashCode() and Equals() shouldn't be in System.Object - not everything's suitable for hashing. Instead, have an IdentityComparer which does the same thing, and keep the IComparer<T>, IComparable<T>, IEqualityComparer<T> and IEquatable<T> interfaces for custom comparisons. Poor support for immutability Poor way of discovering extension methods - it should be a much more conscious decision than just the fact that I'm using a namespace.

这些都是我想出来的，明天问我，我会想出一个不同的5个:)

HyperTalk:

很久很久以前就死了 没有简单的赋值(你不能说a:= 3，你必须说把3放进a 没有嵌套函数 没有真正的数据结构，只有字符串。要创建“列表”，您可以使用itemDelimiter分隔项并手动转义它们。你也可以得到行和单词比如txt的第5行第2个单词

说句题外话，我认为HyperTalk最酷的独特功能之一是特殊的it变量:

ask "How many years old are you?"
answer "You are " & it*12 & " months old."

C#

我对c#非常满意，但这两个真的让我很恼火:

Constructor-based initialization for immutable classes is less convenient, less intuitive (when you read the code you don't understand what you assign to what), has less IDE backing than inline object initialization. This makes you lean towards mutable classes inevitably. I know this has been mentioned before, but I strictly have problems with initialization syntax for immutable classes. switch is too verbose. Whenever I see a situation where a switch would be proper, I'm really inclined to use an if..else if.. just because it's more terse (~30% less typing). I think there should be no fallthrough for switch, break should be implied, and case should allow comma separated list of values.

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++

Strings. They are not interoperable with platform strings, so you end up using std::vector half of the time. The copy policy (copy on write or deep copy) is not defined, so performance guarantees can not be given for straightforward syntax. Sometimes they rely on STL algorithms that are not very intuitive to use. Too many libraries roll their own which are unfortunately much more comfortable to use. Unless you have to combine them. Variety of string representations Now, this is a little bit of a platform problem - but I still hope it would have been better when a less obstinate standard string class would have been available earlier. The following string representations I use frequently: generic LPCTSTR, LPC(W)STR allocated by CoTaskMemAlloc, BSTR, _bstr _t (w)string, CString, std::vector a roll-my-own class (sigh) that adds range checking and basic operations to a (w)char * buffer of known length Build model. I am sick to death of all the time spent muddling around with who-includes-what, forward declarations, optimizing precompiled headers and includes to keep at least incremental build times bearable, etc. It was great in the eighties, but now? There are so many hurdles to packing up a piece of code so it can be reused that even moms dog gets bored listening to me. Hard to parse This makes external tools especially hard to write, and get right. And today, we C++ guys are lacking mostly in the tool chain. I love my C# reflection and delegates but I can live without them. Without great refactoring, I can't. Threading is too hard Language doesn't even recognize it (by now), and the freedoms of the compiler - while great - are to painful. Static and on-demand initialization Technically, I cheat here: this is another puzzle piece in the "wrap up code for reuse": It's a nightmare to get something initialized only when it is needed. The best solution to all other redist problems is throwing everything into headers, this problem says "neeener - you cannot".

诚然，其中许多内容超出了严格的语言范围，但在我看来，整个工具链都需要进行判断和发展。