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Computed / calculated / virtual / derived columns in PostgreSQL
...al, but makes makes life a bit easier).
Suppose my computation is md5(some_string_field), then I create the index as:
CREATE INDEX some_string_field_md5_index ON some_table(MD5(some_string_field));
Now, any queries that act on MD5(some_string_field) will use the index rather than computing it f...
Android Writing Logs to text File
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Don't forget to add permission for writing_external_storage in Manifest!
– virusss8
Jan 18 '12 at 20:16
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Xcode stuck at “Your application is being uploaded”
...rom apple download center:
http://support.apple.com/kb/DL1572?viewlocale=en_US
If this still doesn't help then follow this third method:
This method enables the application loader to use the HTTP port instead of HTTPS.
Go to
Application Loader java folder :
/Applications/Xcode.app/Contents/Applicat...
What is the difference between tree depth and height?
... about to add quote with same content from here: en.wikipedia.org/wiki/Tree_%28data_structure%29
– Péter Török
Apr 8 '10 at 21:53
2
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Can you define aliases for imported modules in Python?
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import a_ridiculously_long_module_name as short_name
also works for
import module.submodule.subsubmodule as short_name
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Static nested class in Java, why?
...an anchor link to the comment to work, but its this comment: #comment113712_253507
– Zach Lysobey
Nov 1 '12 at 18:23
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Is there any particular difference between intval and casting to int - `(int) X`?
... (int) is faster than intval(), according to wiki.phpbb.com/Best_Practices:PHP
– Martin Thoma
Sep 1 '11 at 11:33
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Render a variable as HTML in EJS
... code would be the last type (with the <%-). In your case:
<%- my_form_content %>
For more tags, see the full EJS documentation
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How to convert IPython notebooks to PDF and HTML?
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Everything was collapsed into one page -__-
– htafoya
May 2 '18 at 22:23
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YouTube API to fetch all videos on a channel
...eos from a channel:
https://www.googleapis.com/youtube/v3/search?key={your_key_here}&channelId={channel_id_here}&part=snippet,id&order=date&maxResults=20
After that you will receive a JSON with video ids and details, and you can construct your video URL like this:
http://www.yout...