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数据结构、算法复杂度一览表Know-Thy-Complexities常用算法、数据结构复杂度一览表。来源：http://bigocheatsheet.com/
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Getting parts of a URL (Regex)
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A single regex to parse and breakup a
full URL including query parameters
and anchors e.g.
https://www.google.com/dir/1/2/search.html?arg=0-a&arg1=1-b&arg3-c#hash
^((http[s]?|ftp):\/)?\/?([^:\/\s]+)((\/\w+)*\/)([\w\-\.]+[^#?\s]+)(.*)?...
Razor View Engine : An expression tree may not contain a dynamic operation
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marcindmarcind
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Counting array elements in Python [duplicate]
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TrentTrent
11.7k44 gold badges3636 silver badges3535 bronze badges
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select count(*) from table of mysql in php
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You need to alias the aggregate using the as keyword in order to call it from mysql_fetch_assoc
$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];
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What is the difference between MySQL, MySQLi and PDO? [closed]
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AbraCadaver
69.9k77 gold badges5252 silver badges7777 bronze badges
answered Feb 3 '10 at 9:05
Matthew FlaschenMatthe...
Android disable screen timeout while app is running
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You want to use something like this:
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
share
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improve this answer
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No route matches “/users/sign_out” devise rails 3
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I think the route for signing out is a DELETE method. This means that your sign out link needs to look like this:
<%= link_to "Sign out", destroy_user_session_path, :method => :delete %>
Yours doesn't include the :meth...
What data type to use for money in Java? [closed]
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JodaStephen
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answered Nov 16 '11 at 8:37
Buhake SindiBuhak...
D Programming Language in the real world? [closed]
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I'm using D for my research work in the area of computer graphics. I and others have had papers published in our fields based on work done using D. I think it's definitely ready for use on small to medium sized research projects where performance matters...