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source command not found in sh shell
...mall issues such as this one with Ubuntu. I really like RHEL and RHEL like linux.
– radtek
Mar 14 '14 at 19:05
The acc...
Regex: match everything but specific pattern
...ny languages, use \A to define the unambiguous start of string, and \z (in Python, it is \Z, in JavaScript, $ is OK) to define the very end of the string.
Dot note: In many flavors (but not POSIX, TRE, TCL), . matches any char but a newline char. Make sure you use a corresponding DOTALL modifier (/s...
abort: no username supplied (see “hg help config”)
...
run hg config --edit ( tested it in hg 3.1 both on linux debian and windows)
it will create (if not exists) and open a file with text:
# example config (see "hg help config" for more info)
[ui]
# name and email, e.g.
# username = Jane Doe <jdoe@example.com>
username =...
How to make a cross-module variable?
... these answers. Also note that __builtin__ has been renamed to builtins in python3.
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How can I grep for a string that begins with a dash/hyphen?
... beginning with a dash however it sees fit. Most of the Bash built-ins and Linux and GNU commands handle -- as an option terminator. Use 'set -x' to see the commands and arguments that Bash uses before they will be executed, but after Bash has expanded escapes, globs, and braces. Grep is a confusing...
Generate a random date between two other dates
...e timestamp back to date string and you have a random time in that range.
Python example (output is almost in the format you specified, other than 0 padding - blame the American time format conventions):
import random
import time
def str_time_prop(start, end, format, prop):
"""Get a time at a...
Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...e original because the original was wrong. I was under the impression that Linux thread creation was very cheap and after testing I determined that the overhead of function call in a new thread vs. a normal one is enormous. The overhead for creating a thread to handle a function call is something li...
How to create ls in windows command prompt?
...talled on your system, you can install it from Cash, a library I wrote for Linux commands on Windows:
npm install cash-ls -g
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Syntax behind sorted(key=lambda: …)
...s callable). In the case of sorted the callable only takes one parameters. Python's lambda is pretty simple. It can only do and return one thing really.
The syntax of lambda is the word lambda followed by the list of parameter names then a single block of code. The parameter list and code block are...
What are the differences between django-tastypie and djangorestframework? [closed]
...rms, validators etc. (Well, idiomatic django is no where near to idiomatic python. If you are python expert but have no experience with Django then you might be having hard time initially fit into idiomatic django philosophy and for that matter DRF as well).
DRF comes with lots of inbuilt magic meth...