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What is the best regular expression to check if a string is a valid URL?
...(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|::(?:[0-9a-f]{1,4}:){5}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]...
How to make code wait while calling asynchronous calls like Ajax [duplicate]
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answered Dec 25 '12 at 14:31
DogbertDogbert
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Best way to handle list.index(might-not-exist) in python?
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edited Jan 25 '10 at 14:32
answered Jan 25 '10 at 14:02
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When should null values of Boolean be used?
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answered Jun 25 '12 at 7:53
JB NizetJB Nizet
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How can I get every nth item from a List?
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answered Mar 25 '09 at 17:33
mqpmqp
61.6k1313 gold badges8888 silver badges122122 bronze badges
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How to remove the first and the last character of a string
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answered Nov 25 '13 at 14:57
DietergDieterg
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Can you have multiple $(document).ready(function(){ … }); sections?
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edited Aug 25 '09 at 12:40
answered Aug 25 '09 at 11:47
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2025年8月25日签到记录贴 - 签到区 - 清泛IT社区，为创新赋能！
...生成的,如果您还未签到,请点此进行签到的操作. 我在 2025-08-25 06:40 完成签到,是今天第一个签到的用户,获得随机奖励 小红花 18,另外我还额外获得了 小红花 10.我今天最想说:「该会员没有填写今日想说内容.」. 我在 2025-08-25 07:26 ...
What does the * * CSS selector do?
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answered Mar 25 '13 at 4:54
hobbshobbs
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How to get whole and decimal part of a number?
Given, say, 1.25 - how do I get "1" and ."25" parts of this number?
16 Answers
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