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Python: Why is functools.partial necessary?
...t;> pickle.dumps(lambda x: int(x))
Traceback (most recent call last):
File "<ipython-input-11-e32d5a050739>", line 1, in <module>
pickle.dumps(lambda x: int(x))
File "/usr/lib/python2.7/pickle.py", line 1374, in dumps
Pickler(file, protocol).dump(obj)
File "/usr/lib/pyth...
Maximum concurrent Socket.IO connections
...ly discovered this to be helpful: rtcamp.com/tutorials/linux/increase-open-files-limit The open file limit per process may default to a soft limit of 1024 and hard limit of 4096 and since every open TCP port represents a file, it's important to consider these limits when determining how many open so...
Using SSH keys inside docker container
...sa)" --build-arg ssh_pub_key="$(cat ~/.ssh/id_rsa.pub)" --squash .
Dockerfile
FROM python:3.6-slim
ARG ssh_prv_key
ARG ssh_pub_key
RUN apt-get update && \
apt-get install -y \
git \
openssh-server \
libmysqlclient-dev
# Authorize SSH Host
RUN mkdir -p /root/...
Nodejs cannot find installed module on Windows
...
Add an environment variable called NODE_PATH and set it to %USERPROFILE%\Application Data\npm\node_modules (Windows XP), %AppData%\npm\node_modules (Windows 7/8/10), or wherever npm ends up installing the modules on your Windows flavor. To be done with it once and for all, add this as a Syst...
How enable auto-format code for Intellij IDEA?
...
Eclipse has an option to format automatically when saving the file. There is no option for this in IntelliJ although you can configure a macro for the Ctrl+S (Cmd+S on Mac) keys to format the code and save it.
Intellij reformat on file save
...
Git - How to close commit editor?
...
Save the file in the editor. If it's Emacs: CTRLX CTRLS to save then CTRLX CTRLC to quit or if it's vi: :wq
Press esc first to get out from editing. (in windows/vi)
...
How to use “/” (directory separator) in both Linux and Windows in Python?
I have written a code in python which uses / to make a particular file in a folder, if I want to use the code in windows it will not work, is there a way by which I can use the code in Windows and Linux.
...
When should I use malloc in C and when don't I?
...refore always useful when you deal with arbitrary sized data, like reading file contents or dealing with sockets and you're not aware of the length of the data to process.
Of course, in a trivial example like the one you gave, malloc is not the magical "right tool for the right job", but for more ...
Eclipse comment/uncomment shortcut?
...comment shortcut on both Java class editor and jsf faceted webapp XHTML file editor :
17 Answers
...
Divide a number by 3 without using *, /, +, -, % operators
...ion:
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE * fp=fopen("temp.dat","w+b");
int number=12346;
int divisor=3;
char * buf = calloc(number,1);
fwrite(buf,number,1,fp);
rewind(fp);
int result=fread(buf,divisor,number,fp);
printf("%d / %d = %d...