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Is there a compelling reason to use quantifiers in Perl regular expressions instead of just repeating the character?

I was performing a code review for a colleague and he had a regular expression that looked like this:[详细]

2022-12-25 07:25 分类：问答
Select and delete selected

I am programming something like e-mail f开发者_运维知识库or my users. I want to allow people to select letters and delete selected. How can I do it? I can\'t imagine how can I do it only with one MySQ[详细]

2022-12-25 07:21 分类：问答
Rotating pictures

I am currently programming a Tower Defence game for university and i stumbled upon a problem: i want my towers to rotate towards the monster it is shooting at.[详细]

2022-12-25 07:20 分类：问答
Placing column values in variables using single SQL query

In SQL server, how can I place the value of more than one column in variables using one query? Ex: my query is:开发者_开发问答[详细]

2022-12-25 07:11 分类：问答
CSS div/overflow: Why does the first HTML file work but not the second?

Notice how the first HTML/CSS works when you re-size the browser horizontally.It will shrink no further than around 800 pixels, but it will expand as far as you drag the right edge of the browser.It w[详细]

2022-12-25 07:09 分类：问答
《我在这里 (《二炮手》电视剧插曲)》MP3歌词-田园？

我在这里 (《二炮手》电视剧插曲) 田园语种：国语本歌词于吾爱知道网收集www.qkoufu.com[详细]

2022-12-25 07:08 分类：问答
Why is python decode replacing more than the invalid bytes from an encoded string?

Trying to decode an invalid encoded utf-8 html page gives different results in python, firefox and chrome.[详细]

2022-12-25 07:07 分类：问答
《越来越近》MP3歌词-苏醒AllenSu？

越来越近苏醒AllenSu 专辑：爱人语种：国语流派：R&B 唱片公司：星伦文化传媒（北京）有限公司[详细]

2022-12-25 07:04 分类：问答
What would cause native gem extensions on OS X to build but fail to load?

I am having trouble with some of my rubygems, in particular those that use native extensions. I am on a MacBookPro, with Snow Leopard. I have XCode 3.2.1 installed, with gcc 4.2.1. Ruby 1.8.6, becaus[详细]

2022-12-25 07:04 分类：问答
How to handle 'self' argument with Python decorators

I am trying to setup some decorators so that I can do something like: class Ball(object): def __init__(self, owner):[详细]

2022-12-25 07:01 分类：问答