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django models selecting single field
... a good optimization technique, but make sure that you do not create these extra queries. Otherwise you will lose performance instead of gaining it.
– Eerik Sven Puudist
Jul 19 at 18:47
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How to print the ld(linker) search path
...and:
ld --verbose | grep SEARCH_DIR | tr -s ' ;' \\012
gcc passes a few extra -L paths to the linker, which you can list with the following command:
gcc -print-search-dirs | sed '/^lib/b 1;d;:1;s,/[^/.][^/]*/\.\./,/,;t 1;s,:[^=]*=,:;,;s,;,; ,g' | tr \; \\012
The answers suggesting to use ld.s...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
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Convert a python UTC datetime to a local datetime using only python standard library?
...d. Given that dateutil might fail on both Unix and Windows. btw, you could extract utctotimestamp(utc_dt) -> (seconds, microseconds) from your code for clarity, see Python 2.6-3.x implementation
– jfs
Oct 28 '12 at 20:08
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?
...}, such as {@link
java.util.concurrent.atomic.AtomicLongArray}, require extra memory ordering
guarantees which are generally not needed in these algorithms and are also
expensive on most processors.
SoyLatte - java 6 for osx javadoc excerpt
/** Base class for sun.misc.Unsafe-based F...
Line continuation for list comprehensions or generator expressions in python
...t appears at the end of a line, where it either doesn't stand out or needs extra padding, which has to be fixed when line lengths change:
x = very_long_term \
+ even_longer_term_than_the_previous \
+ a_third_term
In such cases, use parens:
x = (very_long_term
+ even_...
Install go with brew, and running the gotour
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I had to put an extra bin/ on the end, since it seems now that they put these go executables into a subdirectory now. I.e., the command for my path is: export PATH=$PATH:/usr/local/Cellar/go/1.3.3/bin/bin/
– Nate
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Managing CSS Explosion
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@Miguel, it doesn't work that way. Browsers read a CSS string backwards, so it would take: "div .myclass" and find all ".myclass" classes, and then check if it is an ancestor of a div.
– mwilcox
Jan 27 '11 at 19:04
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Twig: in_array or similar possible within if statement?
...the accepted answer back in 2012. This answer doesn't seem to add anything extra.
– William Isted
Aug 18 '16 at 14:43
7
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Why compile Python code?
...ytecode are generally not all that hard to reverse-compile unless you take extra steps to obfuscate them - merely compiling generally won't be sufficient.
– EJoshuaS - Reinstate Monica
Jul 12 '19 at 13:54
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