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Will GetType() return the most derived type when called from the base class?
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Is it a good idea to index datetime field in mysql?
...ies. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 30 DAY) and you have no other index in the condition, MySQL will have to do a full table scan on every query. I'm not sure how many rows are generated in 30 days, but as long as it's less than about 1/3 of the total rows it ...
When would you use .git/info/exclude instead of .gitignore to exclude files?
...ore in your comment above. My understanding is that ignore rules can be at 3 levels - $PROJECT/.git/info/exclude for (project, user) specific ignore rules, $PROJECT/<any number of directories>/.gitignore which is for project specific ignore rules across any user anywhere (when checked in), ~/...
Setting environment variables for accessing in PHP when using Apache
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wroniastywroniasty
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Measuring text width to be drawn on Canvas ( Android )
... Marc BernsteinMarc Bernstein
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How to make Scroll From Source feature always enabled?
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answered Jun 15 '12 at 13:43
chalimartineschalimartines
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Prepend a level to a pandas MultiIndex
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A nice way to do this in one line using pandas.concat():
import pandas as pd
pd.concat([df], k...
How to redirect the output of an application in background to /dev/null
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You use:
yourcommand > /dev/null 2>&1
If it should run in the Background add an ...