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Purpose of Django setting ‘SECRET_KEY’
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96
It is used for making hashes. Look:
>grep -Inr SECRET_KEY *
conf/global_settings.py:255:SE...
size_t vs. uintptr_t
...vermind segmented architectures, what about a modern architecture like x86-64? Early implementations of this architecture only give you a 48-bit addressable space, but the pointers themselves are a 64-bit data type. The largest contiguous block of memory you could reasonably address would be 48-bit,...
Format number to 2 decimal places
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You want to use the TRUNCATE command.
https://dev.mysql.com/doc/refman/8.0/en/mathematical-fun...
iOS 7 - How to display a date picker in place in a table view?
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84
You can use the answer I had previously given below or use this new class in Swift I made to ma...
Smallest data URI image possible for a transparent image
...in some browsers).
Shorter (but unstable - 74 bytes)
data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
I would advise using the slightly longer and more stable version as follows:
⇊ Stable ⇊ (but slightly longer - 78 bytes)
data:image/gif;base64,R0lGODlhAQABAIAAAA...
Call Javascript function from URL/address bar
... It doesn't work on Google Chrome Version 80.0.3987.132 (Official Build) (64-bit). Chrome automatically strips the javascript: prefix from the address bar.
– stomy
Mar 17 at 18:03
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Return multiple columns from pandas apply()
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96
Use apply and zip will 3 times fast than Series way.
def sizes(s):
return locale.form...
C library function to perform sort
...range of incredibly fast sorting routings, like so:
#define SORT_NAME int64
#define SORT_TYPE int64_t
#define SORT_CMP(x, y) ((x) - (y))
#include "sort.h"
/* You now have access to int64_quick_sort, int64_tim_sort, etc., e.g., */
int64_quick_sort(arr, 128); /* Assumes you have some int *arr or int...
How to unmount a busy device
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84
Make sure that you aren't still in the mounted device when you are trying to umount.
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offsetting an html anchor to adjust for fixed header [duplicate]
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Love your solution! It seems not to work with IE7. Anyway, I plan to ignore IE7 users from now on...
– user334639
...