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Detect URLs in text with JavaScript
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edited Jun 1 at 5:43
mplungjan
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answ...
What is the advantage of using forwarding references in range-based for loops?
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Howard HinnantHoward Hinnant
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How to integrate nodeJS + Socket.IO and PHP?
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Jason Aller
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answered Jun 20 '13 at 9:11
Jérémy DutheilJ...
二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...c/qr_code.pdf
基础知识
首先，我们先说一下二维码一共有40个尺寸。官方叫版本Version。Version 1是21 x 21的矩阵，Version 2是 25 x 25的矩阵，Version 3是29的尺寸，每增加一个version，就会增加4的尺寸，公式是：(V-1)*4 + 21（V是版本号） 最...
What regular expression will match valid international phone numbers?
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\+(9[976]\d|8[987530]\d|6[987]\d|5[90]\d|42\d|3[875]\d|
2[98654321]\d|9[8543210]|8[6421]|6[6543210]|5[87654321]|
4[987654310]|3[9643210]|2[70]|7|1)\d{1,14}$
Is the correct format for matching a generic international phone number. I replaced the US land line centri...
Callback functions in C++
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477
Note: Most of the answers cover function pointers which is one possibility to achieve "callbac...
What's the difference between a Python “property” and “attribute”?
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Ethan FurmanEthan Furman
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PostgreSQL Autoincrement
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714
Yes, SERIAL is the equivalent function.
CREATE TABLE foo (
id SERIAL,
bar varchar);
INSERT INT...
What is the 'pythonic' equivalent to the 'fold' function from functional programming?
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Fred FooFred Foo
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Difference between rake db:migrate db:reset and db:schema:load
.../databases.rake (for Rails 3.2.x) and https://github.com/rails/rails/blob/v4.0.5/activerecord/lib/active_record/railties/databases.rake (for Rails 4.0.x)
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