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Why doesn't adding CORS headers to an OPTIONS route allow browsers to access my API?
... had the list of accepted HEADERS, or which content-types require OPTIONS, etc but it's a good start
– dwanderson
Jun 19 '18 at 1:38
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How to secure MongoDB with username and password
...at starts with #auth=true in your mongod configuration file (default path /etc/mongo.conf). This will enable authentication for mongodb.
Then, restart mongodb : sudo service mongod restart
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Proper way to handle multiple forms on one page in Django
...s? Like, with checking is_valid() from the first form, then the first two, etc… Maybe just have a handled = False that gets updated to True when a compatible form is found?
– binki
Jan 13 '16 at 22:31
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How to see the changes between two commits without commits in-between?
...er than 'abcdef's immediate ancestor. Of course, you may get conflicts and etc, so it's not a very useful process in most cases.
If you're just interested in abcdef itself, you can do:
$ git log -u -1 abcdef
This compares abcdef to its immediate ancestor, alone, and is usually what you want.
An...
Copying text with color from Notepad++
...ault Edit > Copy command provided RTF as a default for MS Word, Outlook etc.
– Jonathan Watmough
Sep 26 '16 at 14:16
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How to make rounded percentages add up to 100%
...mal place instead of integer values. So the numbers would be 48.3 and 23.9 etc. This would drop the variance from 100 by a lot.
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How to get all subsets of a set? (powerset)
...sets).
def power_set(A):
"""A is an iterable (list, tuple, set, str, etc)
returns a set which is the power set of A."""
length = len(A)
l = [a for a in A]
ps = set()
for i in range(2 ** length):
selector = f'{i:0{length}b}'
subset = {l[j] for j, bit in enum...
What JSON library to use in Scala? [closed]
...ackson, not using Jerkson. It has support for Scala objects, (case classes etc).
Below is an example of how I use it.
object MyJacksonMapper extends JacksonMapper
val jsonString = MyJacksonMapper.serializeJson(myObject)
val myNewObject = MyJacksonMapper.deserializeJson[MyCaseClass](jsonString)
T...
How to work with complex numbers in C?
...ed engineering domains such as physics, electronics, mechanics, astronomy, etc...
Real and imaginary part, of a negative square root example:
#include <stdio.h>
#include <complex.h>
int main()
{
int negNum;
printf("Calculate negative square roots:\n"
"Enter neg...
Is there a UIView resize event?
...do keep changing this stuff. Anyway, now you should use viewWillTransition etc. etc.
– Dan Rosenstark
Jan 12 '17 at 19:49
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