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Adding :default => true to boolean in existing Rails column
...dding a default boolean value to an existing column. So I tried the change_column suggestion but I mustn't be doing it right.
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How to set margin of ImageView using code, not xml
...ed :)
– Adam Rabung
Sep 1 '11 at 13:06
1
in case we wanted to set only the bottom margin of the i...
Where can I find the error logs of nginx, using FastCGI and Django?
...setting.
– MarthyM
Dec 15 '16 at 13:06
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What are POD types in C++?
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In C++11, you can do std::is_pod<MyType>() to tell whether MyType is POD.
– allyourcode
Mar 31 '14 at 21:24
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is_null($x) vs $x === null in PHP [duplicate]
... three if you count isset() ) methods to determine if a value is null: is_null() and === null . I have heard, but not confirmed, that === null is faster, but in a code review someone strongly suggested that I use is_null() instead as it is specifically designed for the null-evaluation purpo...
Django Model - Case-insensitive Query / Filtering
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I solved it like this:
MyClass.objects.filter(name__iexact=my_parameter)
There is even a way to use it for substring search:
MyClass.objects.filter(name__icontains=my_parameter)
There's a link to the documentation.
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Lightweight Java Object cache API [closed]
...thing :)
– jpillora
Oct 7 '12 at 13:06
@RosdiKasim it does have TTL actually on put() call, eg: cache.put("mykey", val...
Scala Programming for Android
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answered Jun 17 '10 at 9:06
Jan BerkelJan Berkel
3,19311 gold badge2727 silver badges2222 bronze badges
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Is it better to use std::memcpy() or std::copy() in terms to performance?
... of std::copy over memcpy: 2.99%
My compiler is gcc 4.6.3 on Fedora 16 x86_64. My optimization flags are -Ofast -march=native -funsafe-loop-optimizations.
Code for my SHA-2 implementations.
I decided to run a test on my MD5 implementation as well. The results were much less stable, so I decided t...
Difference between del, remove and pop on lists
...so that del is slightly faster, but for a different reason: the lookup for __delitem__ on a type implemented in C happens by index rather than by name, whereas pop needs to be looked up following the whole descriptor protocol. The execution of the functions themselves should take the same amount of ...