Built-in

diskutil erasevolume HFS+ 'RAM Disk' `hdiutil attach -nobrowse -nomount ram://XXXXX`

where XXXXX is the size of the RAM disk in terms of memory blocks.

Notes:

eirnym / regular_expression_engine_comparison.md

Created February 24, 2025 11:29 — forked from CMCDragonkai/regular_expression_engine_comparison.md

Regular Expression Engine Comparison Chart

Many different applications claim to support regular expressions. But what does that even mean?

Well there are lots of different regular expression engines, and they all have different feature sets and different time-space efficiencies.

The information here is just copied from: http://regular-expressions.mobi/refflavors.html

eirnym / print256colours.sh

Created February 3, 2024 11:12 — forked from HaleTom/print256colours.sh

Print a 256-colour test pattern in the terminal

	#!/bin/bash

	# Tom Hale, 2016. MIT Licence.
	# Print out 256 colours, with each number printed in its corresponding colour
	# See http://askubuntu.com/questions/821157/print-a-256-color-test-pattern-in-the-terminal/821163#821163

	set -eu # Fail on errors or undeclared variables

	printable_colours=256

eirnym / GitHub Flavored Asciidoc (GFA).adoc

Created March 14, 2021 16:49 — forked from dcode/GitHub Flavored Asciidoc (GFA).adoc

Demo of some useful tips for using Asciidoc on GitHub

GitHub Flavored Asciidoc (GFA)

eirnym / AsciidocCheatsheet.adoc

Created March 14, 2021 11:51 — forked from powerman/AsciidocCheatsheet.adoc

Asciidoc cheatsheet for GitHub

eirnym / RandomDateGenerator.m

Created April 26, 2016 13:38

Random Date generator for Objective C.


	/**
	Generate a random date sometime between now and n days before day.

	Also, generate a random time to go with the day while we are at it.

	@param days date range between today and minimum date to generate
	@return random date
	@see http://stackoverflow.com/questions/10092468/how-do-you-generate-a-random-date-in-objective-c
	*/

eirnym / sqlalchemy_exists_patch.py

Last active December 21, 2023 17:22

SQLAlchemy 'if exists' patch

	import re

	from sqlalchemy.ext.compiler import compiles
	from sqlalchemy.schema import CreateTable, DropTable, \
	CreateSequence, DropSequence, CreateIndex, DropIndex
	from sqlalchemy.dialects.postgresql import DropEnumType

	patches = (
	(CreateTable, 'visit_create_table', "^\s*CREATE TABLE", "CREATE TABLE IF NOT EXISTS"),
	(CreateIndex, 'visit_create_index', "^\s*CREATE INDEX", "CREATE INDEX IF NOT EXISTS"),

eirnym / metadata.py

Created April 11, 2015 17:38

SQLAlchemy dump SQL and metadata create_all and drop_all usage example. This is highly usable with aiopg and similar library where synchronised version of engine is not applicable.

	from sqlalchemy_dump import dump_sql


	def create_all_sql(metadata):
	return dump_sql(metadata.create_all, bind=True)()

	def drop_all_sql(metadata):
	return dumpsql(metadata.drop_all, bind=True)()

eirnym / representable_base.py

Last active August 29, 2015 14:18 — forked from exhuma/representable_base.py

this representable base adds generatable __str__ and __repr__

	# based on: https://gist.github.com/exhuma/5935162#file-representable_base-py

	class RepresentableBase(object):
	""" Add automatic __repr__ and __str__ to SQLAlchemy ORM models
	"""
	def _repr_worker(self, attribute):
	mapper = object_mapper(self)
	items = [(p.key, getattr(self, p.key))
	for p in (
	mapper.get_property_by_column(c)

Eir Nym eirnym

Built-in

Regular Expression Engine Comparison Chart

GitHub Flavored Asciidoc (GFA)

Asciidoc cheatsheet for GitHub