dgroft’s gists

dgroft / rename_files_using_regex

Last active August 29, 2015 14:06

Rename multiple files in a directory using Regex.

	# rename multiple files in a directory using regex
	# source: http://stackoverflow.com/questions/5574648/use-regex-powershell-to-rename-files
	ls \| %{ ren $_ $($_.name -replace '(TestFile_\w+)(\d+)(\.txt)', '${1}20140910${3}')}

dgroft / gist:dfb6db932ad93b4c26b3

Created July 9, 2014 18:36

Extract contents between parens in a string using RegEx

	// fetch "grab this part!"
	Regex.Match("blah blah (grab this part!)", @"$([^)]*)$").Groups[1].Value

	// source: http://stackoverflow.com/questions/378415/how-do-i-extract-a-string-of-text-that-lies-between-two-parenthesis-using-net

dgroft / unity_editor_window_progress_bar.cs

Created February 17, 2014 19:56

Create a progress bar embedded in a Unity editor window

	Rect r = EditorGUILayout.BeginVertical();
	EditorGUI.ProgressBar(r, 0.1f, "Doing something helpful");
	GUILayout.Space(18);
	EditorGUILayout.EndVertical();

dgroft / async_lambda_with_callback.cs

Last active August 29, 2015 13:56

Asynchronously invoke a lambda and invoke a callback lambda upon completion back on the main thread. Helpful in the event you're unable to enjoy TPL or async/await.

	using System.Runtime.Remoting.Messaging;
	using System.Threading;

	// capture the ui thread context for completion callback
	private SynchronizationContext context = SynchronizationContext.Current;

	Action action = () => {
	/* do some stuff */
	};

dgroft / xml_transform_and_validate.py

Created November 22, 2013 15:17

Applies XSL transform to XML returned from an HTTP request, then validates it against an XSD/schema.

	from __future__ import print_function

	import argparse
	import lxml.etree as ET
	import urllib

	parser = argparse.ArgumentParser(description="Transforms and Validates XML")
	parser.add_argument("--feeds", help="the text file that holds the urls to be validated", default="feeds.txt")
	parser.add_argument("--log", help="the output log file that reports all errors", default="log.txt")
	parser.add_argument("-v", "--verbose", help="increase output verbosity", action="store_true")

dgroft / launch_sln.bat

Last active December 21, 2015 18:19

Launching Visual Studio 2008 with temporary environment variables and temporarily appending to PATH.

	' invoke vsvars32.bat. just do it.
	call "C:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools\vsvars32.bat"

	' temporary environment variables assignment
	' set ENV_VAR = value

	' temporary path modification
	set path=%path%;C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin;C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE

	' launch visual studio

dgroft / redis-centos.sh

Created July 30, 2013 20:31

Installs Redis on CentOS.

	#!/bin/bash
	################################################################################
	# Installing Redis on CentOS
	# with lots of help from:
	# * https://gist.github.com/coder4web/5762999
	# * http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
	# * https://coderwall.com/p/ypo94q
	# * https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
	################################################################################

dgroft / ParseEnum.cs

Created July 8, 2013 15:08

Parsing an enum.

	enum DaysOfTheWeek { Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday };

	var tues = (DaysOfTheWeek)Enum.Parse(typeof(DaysOfTheWeek), "Tuesday");

dgroft / maxsumnonadjacent.py

Last active December 19, 2015 08:19

Maximize the sum of a given collection such that if you include the number in sum, you may not use adjacent numbers toward the sum. For the collection [1, 5, 3, 9, 4], the max sum is 5 + 9 = 14. For the collection [1, 2, 3, 4, 5], the max sum is 1 + 3 + 5 = 9. For the collection [1, 3, 5, -1, 12, 6, 7, 11], the max sum is 1 + 5 + 12 + 11 = 29.

	from __future__ import print_function
	import heapq

	# construct initial collection
	initial_col = [1, 5, 3, 9, 4]

	# construct heap
	heap = []

	# assemble the heap, store tuples as such: (original_value, original_index)

dgroft / GetPermutations.cs

Created June 25, 2013 16:50

Finds all permutations of a supplied list of generic values.

	private static List<List<T>> GetPermutations<T>(List<T> values)
	{
	if (values.Count <= 1) return new List<List<T>>() { values };

	var results = new List<List<T>>();

	var perms = GetPermutations(values.Skip(1).ToList());

	foreach (var perm in perms)
	{

Dan Groft dgroft