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How does a hash table work?
...ed information (the records) for their approximately 30,000 clients. Each file folder were clearly identified with its client number, a unique number from 0 to 29,999.
The filing clerks of that time had to quickly fetch and store client records for the working staff. The staff had decided that it...
Automatically import modules when entering the python or ipython interpreter
...UP. From the official documentation:
If this is the name of a readable file, the Python commands in that
file are executed before the first prompt is displayed in interactive
mode. The file is executed in the same namespace where interactive
commands are executed so that objects defined or...
git pushes with wrong user from terminal
...-add -l to determine which keys are in your keyring, and ssh-add -d <keyfile> to remove a key from your keyring, if it dosent work remove the 'unwanted' ssh key from ~/.ssh/config.
source
NB: Github will still identify your commit based on the email only.
...
How do I force git to use LF instead of CR+LF under windows?
I want to force git to checkout files under Windows using just LF not CR+LF . I checked the two configuration options but I was not able to find the right combination of settings.
...
Django get the static files URL in view
...ic
# Improved answer (thanks @Kenial, see below)
from django.contrib.staticfiles.templatetags.staticfiles import static
url = static('x.jpg')
# url now contains '/static/x.jpg', assuming a static path of '/static/'
share
...
Batch file include external file for variables
I have a batch file and I want to include external file containing some variables (say configuration variables). Is it possible?
...
Regex: Remove lines containing “help”, etc
...ox include your regex: .*help.*\r?\n (where the \r is optional in case the file doesn't have Windows line endings).
Leave the Replace with: text box empty.
Make sure the Regular expression radio button in the Search Mode area is selected. Then click Replace All and voila! All lines containing your s...
Uploading base64 encoded Image to Amazon S3 via Node.js
...outer method :-
ContentType should be set to the content type of the image file
buf = Buffer.from(req.body.imageBinary.replace(/^data:image\/\w+;base64,/, ""),'base64')
var data = {
Key: req.body.userId,
Body: buf,
ContentEncoding: 'base64',
ContentType: 'image/jpeg'
};
s3B...
How to find memory leak in a C++ code/project?
...ine a macro say, DEBUG_NEW and use it, along with predefined macros like __FILE__ and __LINE__ to locate the memory leak in your code. These predefined macros tell you the file and line number of memory leaks.
DEBUG_NEW is just a MACRO which is usually defined as:
#define DEBUG_NEW new(__FILE__, _...
What is the easiest way to remove all packages installed by pip?
...Linux systems.
To get the list of all pip packages in the requirements.txt file (Note: This will overwrite requirements.txt if exist else will create the new one, also if you don't want to replace old requirements.txt then give different file name in the all following command in place requirements.t...