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Pip freeze vs. pip list
...you are using a virtualenv, you can specify a requirements.txt file to install all the dependencies.
A typical usage:
$ pip install -r requirements.txt
The packages need to be in a specific format for pip to understand, which is
feedparser==5.1.3
wsgiref==0.1.2
django==1.4.2
...
That is the ...
View a list of recent documents in Vim
...@Stew link to that question? Those don't seem to work for me. [UPDATE] actually it works for me with :browse oldfiles – sorry!
– Aaron Gibralter
Feb 20 '14 at 6:11
...
How can I load storyboard programmatically from class?
... xib . But I can't find proper way to load and show storyboard programmatically. Project was started developing with xib, and now it's very hard to nest all xib files in storyboard. So I was looking a way to do it in code, like with alloc, init, push for viewControllers. In my case I have only one...
Get the IP address of the machine
...hould be the same below.
I've done a quick example below which will print all of the machine's IPv4 address, (you should also check the getifaddrs was successful ie returns 0).
I've updated it show IPv6 addresses too.
#include <stdio.h>
#include <sys/types.h>
#include <ifaddr...
PostgreSQL naming conventions
.... Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always lowercase you are safe. Anyway, it's acceptable to use camelCase or PascalCase (or UPPER...
Execute JavaScript code stored as a string
...
@divinci This is called "Cross Site Scripting". See here: en.wikipedia.org/wiki/Cross-site_scripting.
– Brendon Shaw
Nov 18 '18 at 21:10
...
How do I concatenate two strings in C?
...-terminator.
char* concat(const char *s1, const char *s2)
{
const size_t len1 = strlen(s1);
const size_t len2 = strlen(s2);
char *result = malloc(len1 + len2 + 1); // +1 for the null-terminator
// in real code you would check for errors in malloc here
memcpy(result, s1, len1);
...
Age from birthdate in python
...
That probably depends on your definition of "age". For all practical purposes a birthday is usually given as a date, not timezone-aware datetime (i.e., "born" is missing the details). Most people are not born at midnight sharp (so usually observe prematurely :-)), and when in a d...
Creating a new user and password with Ansible
... parameter.
There you'll see that your password must be hashed.
- hosts: all
user: root
vars:
# created with:
# python -c 'import crypt; print crypt.crypt("This is my Password", "$1$SomeSalt$")'
password: $1$SomeSalt$UqddPX3r4kH3UL5jq5/ZI.
tasks:
- user: name=tset password={...
How to programmatically take a screenshot on Android?
... save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in an Activity):
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
//...