最近Stack Overflow上有一群讨厌perl的人,所以我想我应该把我的“关于你最喜欢的语言你讨厌的五件事”的问题带到Stack Overflow上。拿你最喜欢的语言来说,告诉我你讨厌它的五件事。这些可能只是让你烦恼的事情,承认的设计缺陷,公认的性能问题,或任何其他类别。你只需要讨厌它,它必须是你最喜欢的语言。

不要拿它和其他语言比较,也不要谈论你已经讨厌的语言。不要用你最喜欢的语言谈论你喜欢的事情。我只是想听到你讨厌但能容忍的东西,这样你就可以使用所有其他的东西,我想听到你希望别人使用的语言。

每当有人试图把他们最喜欢的语言强加给我时,我就会问这个问题,有时是面试问题。如果有人找不出他最喜欢的工具的5个缺点,那他对它还不够了解,不能提倡它,也不能利用它赚大钱。他还没有在足够多的不同情况下使用它来充分探索它。他把它作为一种文化或宗教来倡导,这意味着如果我不选择他最喜欢的技术,我就错了。

我不在乎你用什么语言。不想使用特定的语言?那就不要。你通过尽职调查做出了明智的选择,但仍然没有使用它?好吧。有时正确的答案是“你有一个强大的编程团队,有良好的实践和丰富的Bar经验。改成Foo是愚蠢的。”


This is a good question for code reviews too. People who really know a codebase will have all sorts of suggestions for it, and those who don't know it so well have non-specific complaints. I ask things like "If you could start over on this project, what would you do differently?" In this fantasy land, users and programmers get to complain about anything and everything they don't like. "I want a better interface", "I want to separate the model from the view", "I'd use this module instead of this other one", "I'd rename this set of methods", or whatever they really don't like about the current situation. That's how I get a handle on how much a particular developer knows about the codebase. It's also a clue about how much of the programmer's ego is tied up in what he's telling me.

憎恨并不是衡量人们了解多少的唯一尺度,但我发现它是一个相当不错的尺度。他们讨厌的事情也让我知道他们对这个话题的思考有多好。


当前回答

下面是关于Perl 5的更多内容,来自创建了大量Perl模块,特别是在Moose上工作过的人的观点。

The horrible brokenness that is overloading and tied variables. Both of these features are a failed attempt to allow transparent extension to the built-in types. They both fail in various ways, and require module authors like myself to either implement horrible hacks to support them, or to say "never pass an overloaded object to the foo() method". Neither alternative is really acceptable. Lack of proper hooks into the compilation process and the meta-model. Moose in general, and role usage in particular, could be made much safer if the Perl core allowed us to affect the compilation process via a sane API that allowed us to hook into the meta-model (packages, classes, etc.) Lack of named parameters built into the language. Instead, everyone reinvents this. It's annoying. Similarly, lack of optional types. I don't want a static language, but the ability to specify types and constraints, particularly on function/method parameters, would be great. Perl 6 gets this right. Types are optional, but very rich, and there's no fundamental difference between built-in and user-defined types. The backwards compatibility police. This is more of a cultural issue. A number of the above issues can never really be fixed, since Perl 5 has a very strong commitment to backwards compatibility. So even if something were to be added that effectively replaced the current ball of shit that is tie and overloading, those features will never be removed. Of course, backwards compatibility is also one of Perl 5's greatest strengths. Bonus hate: Perl's built-in exception mechanism is a joke. The fact that exceptions may be a string or object makes for an eternity of fiddly exception-catching code, and the lack of a catch in the language syntax is the wart on the wart.

其他回答

Perl

我喜欢这门语言,我不想添加已经被使用过的东西,但还没有人提到过这一点,所以我就把它扔到锅上。当我使用这个特性时,我发现这是我一生中最可怕的经历(而且我用过汇编语言):

write()和format()函数。

它们的语法是最糟糕、最丑陋、最可怕的,但是它们并没有提供比printf()更好的功能更多的功能。任何人都不应该尝试使用这两个函数进行任何输出,因为它们有多糟糕。

我相信有人会不同意,但是当我研究它们,希望它们能解决我的问题时,我发现它们是一个“痛苦的世界”(引用Big Lebowski的话),我希望Perl6已经消除了它们,或者更好的是完全重写它们,使它们在某种程度上更可用和有用。

EL -表达式语言,${…}和#{…JSF 2.0 Facelets用于从底层Java代码中提取数据。

All the fun things, like method calls with parameters and annotation based naming is only present in the EL in Java EE 6 which is only available in Glassfish v3. It is a royal pain to 1) get the right jars for an earlier Servlet 2.5 container, and 2) getting them to work without interfering with any previous implementation available in the container. Having only an earlier version of JSF like 1.2, takes away the method calls and leave you to work with f:setPropertyActionListener - http://weblogs.java.net/blog/2009/07/22/say-sayonara-spal - which, trust me on this, is not very nice. The EL parser has no idea of where the snippet it is to parse and interpret came from, so you tend to give everything an id so you at least can identify which tag made it grumpy. Eclipse gives a warning at every EL method call as it is JSF 1.2. only too.

BrainF * ck

你的亮点是图灵完备?!我可以在Perl正则表达式中做更多的事情! 缺少对象。来吧,人!就像,你好… 没有网络库。我只想刮一个网页,天哪。 没有一级函数。恭喜你——你可以同情你的Java朋友了。 一个无限的磁带存储,没有其他。这是如此的矫情,我们可能还在写Lisp。

Java -不支持语言级别的组合

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. -