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What's the difference between :: (double colon) and -> (arrow) in PHP?
...esolution, and it may have either a class name, parent, self, or (in PHP 5.3) static to its left. parent refers to the scope of the superclass of the class where it's used; self refers to the scope of the class where it's used; static refers to the "called scope" (see late static bindings).
The rul...
Changing a specific column name in pandas DataFrame
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362
A one liner does exist:
In [27]: df=df.rename(columns = {'two':'new_name'})
In [28]: df
Out[...
Can a CSV file have a comment?
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skaffmanskaffman
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Rails: around_* callbacks
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edited Feb 14 '11 at 23:46
answered Feb 14 '11 at 23:36
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What command opens Ruby's REPL?
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Jörg W MittagJörg W Mittag
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What do the crossed style properties in Google Chrome devtools mean?
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326
When a CSS property shows as struck-through, it means that the crossed-out style was applied, ...
What's the difference between MemoryCache.Add and MemoryCache.Set?
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173
Add does nothing (returns false) if there is already a value for that key. Set does an insert or...
SQL selecting rows by most recent date
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Mitchel SellersMitchel Sellers
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How can I switch my git repository to a particular commit
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edited May 23 '17 at 12:34
Community♦
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answered Feb 9 '11 at 0:17
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Passport.js - Error: failed to serialize user into session
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370
It looks like you didn't implement passport.serializeUser and passport.deserializeUser. Try ad...