patkujawa-wf’s gists

patkujawa-wf / cancellation_token.dart

Created September 26, 2018 03:29

Example CancellationToken[Source] a la .net. Provides a way to signal that an operation has been canceled

	import 'package:w_common/func.dart';

	/// Provides a way to signal that an operation has been canceled.
	///
	/// Typically, the consumer creates a [CancellationTokenSource] and then passes
	/// the [token] to another operation. The consumer can then call [cancel],
	/// while the operation can only check if it has been canceled.
	///
	/// FUTURE: If we want a stream to listen for when a cancellation has happened,
	/// use CancelableCompleter from the async package instead.

patkujawa-wf / pubupgrade.py

Last active July 28, 2021 20:52

pubupgrade: Combine your dart pubspec files' information so that you can easily upgrade your pubspec.yaml to the versions in your pubspec.lock

	#!/usr/bin/env python
	# -- coding: utf-8 --
	from __future__ import print_function

	import argparse
	import sys
	import re

	import yaml # PyYAML

patkujawa-wf / PULL_REQUEST_TEMPLATE.md

Last active February 18, 2017 02:56

Markdown checkboxes that don't persist in github when checked in the rendered view

patkujawa-wf / sed1line.bash

Created July 11, 2016 15:23

USEFUL ONE-LINE SCRIPTS FOR SED (Unix stream editor), sed1line.txt

	-------------------------------------------------------------------------
	USEFUL ONE-LINE SCRIPTS FOR SED (Unix stream editor) Dec. 29, 2005
	Compiled by Eric Pement - pemente[at]northpark[dot]edu version 5.5

	Latest version of this file (in English) is usually at:
	http://sed.sourceforge.net/sed1line.txt
	http://www.pement.org/sed/sed1line.txt

	This file will also available in other languages:
	Chinese - http://sed.sourceforge.net/sed1line_zh-CN.html

patkujawa-wf / dump.py

Last active July 12, 2018 17:23

all-purpose function for dumping any python thing in a mostly-readable manner (aka dump)

	import logging

	# MAGIC-NUMBER: max length is just some guess at a reasonable size, e.g. 80 cols by 500 lines
	def dump(value, msg='DUMP', max_length=80 * 500, stdout=False, pick=(), skip=(),
	loglevel=logging.DEBUG):
	"""
	Write as verbose of a description of the value as possible to logging.DEBUG.

	See http://stackoverflow.com/q/27830888/116891

patkujawa-wf / test_multiple_files_same_asserts_using_meta_programming.py

Last active August 29, 2015 14:17

Gold/approved file testing all methods in a test class against every file in a directory via metaclass metaprogramming in Python

	import glob
	import inspect
	import os
	import re
	import unittest

	# http://superuser.com/a/748264/43406. NOTE ^ in front for negation
	_unsafe_filename_regex = re.compile('([^\[\]\.0-9a-zA-Z-,;_])')

patkujawa-wf / pretty_json.sh

Created January 2, 2015 18:51

Pretty print a json file with python via the command line

	# From https://betamax.readthedocs.org/en/latest/cassettes.html
	python -m json.tool cassette.json

patkujawa-wf / caching_example.py

Created December 30, 2014 19:14

Automatic caching with google app engine ndb example

	# Taken from http://ae-book.appspot.com/static/pgae-ndb-20121009.pdf
	# Video at https://www.youtube.com/watch?v=xZsxWn58pS0#t=3383

	## Automatic Caching
	# • Two automatic caching features
	# • “In-context” cache
	# • Memcache storage
	# • Same basic idea, difference in scope
	# • Context cache starts empty for each request
	# • Minimizes datastore interactions throughout the request handler code

patkujawa-wf / cursors_example.py

Created December 30, 2014 19:08

Cursors in google app engine example, pagination with urlsafe conversion

	# Taken from http://ae-book.appspot.com/static/pgae-ndb-20121009.pdf
	# Video at https://www.youtube.com/watch?v=xZsxWn58pS0#t=3184

	## Cursors
	# • Fetch results using an iterator, with cursors enabled:
	it = query.iter(produce_cursors=True)
	for result in it: # ...
	# • Test whether there’s another result:
	if it.has_next(): # ...
	if it.probably_has_next(): # ...

patkujawa-wf / projection_query_example.py

Created December 30, 2014 19:04

Projection query example in google app engine

	# Taken from http://ae-book.appspot.com/static/pgae-ndb-20121009.pdf
	# Video at https://www.youtube.com/watch?v=xZsxWn58pS0#t=2970
	query = Player.query()
	results = query.fetch(20,
	projection=[Player.name, Player.level])
	for player in results:
	# player.name ...
	# (player.score not set)

	# Projected property values are pulled directly from

Pat Kujawa patkujawa-wf