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What are the differences between Pandas and NumPy+SciPy in Python? [closed]
...el-paired data (in 1d aka dicts and 2d aka tables). Data alignment, join, etc all become possible due to this, but for people who don't grok that underlying difference it's not even clear what those mean (e.g., what is "data alignment" of two numpy arrays?).
– Brandyn
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Regular expressions in C: examples?
... of other languages. The POSIX syntax is the syntax used by grep, sed, vi, etc.
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How to remove a column from an existing table?
... DROP the CONSTRAINT first, then you will be able to DROP the COLUMN. In order to drop a CONSTRAINT, run:
ALTER TABLE MEN DROP CONSTRAINT {constraint_name_on_column_Lname}
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Delete duplicate rows from small table
... ROW_NUMBER() OVER (partition BY column1, column2, column3 ORDER BY id) AS rnum
FROM tablename) t
WHERE t.rnum > 1);
provided by Postgres wiki:
https://wiki.postgresql.org/wiki/Deleting_duplicates
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WHERE vs HAVING
...se clauses, but MySQL allows referencing SELECT level aliases in GROUP BY, ORDER BY and HAVING.
And are there any downsides instead of doing "WHERE 1" (writing the whole definition instead of a column name)
If your calculated expression does not contain any aggregates, putting it into the WHER...
jQuery: Count number of list elements?
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I need the <li> count in order to recalculate the element width on the fly.
– Hristo
Jul 26 '15 at 22:52
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How to view the contents of an Android APK file?
... code and analyze size) the best way
2.open by applications winRar,7zip,etc (Just to see photos and ...)
3.use website javadecompilers (For Photo and java code)
4.use APK Tools (For Photo and java code)
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How do I import a namespace in Razor View Page?
...od. Please do not add this to the top of your razor pages. This is messy etc... Correct way is to add to Views - web.config just as @Javad_Amiry points out.
– Tom Stickel
Aug 3 '15 at 20:54
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Java: Integer equals vs. ==
... cdsCt were both ints so this was fine, but I had to make them Integers in order to check for the null situation which is handled differently ...
– Jeremy Goodell
Sep 3 '10 at 17:40
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scale Image in an UIButton to AspectFit?
.... However, you also need to set the same image of the highlighted state in order to avoid the image going back to "fill mode". For example, [imageButton setImage:image forState:UIControlStateHighlighted];
– Christopher
Jan 11 '13 at 4:54
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