rentalcustard’s gists

rentalcustard / gist:5975279

Last active December 19, 2015 15:19

Rails 3 commands in rails 2

	#put me in your ~/.(bash\|zsh\|other-posix-shell)rc

	rails() {
	command=$1
	shift

	case $command in
	g\|generate)
	script/generate $*;;
	c\|console)

rentalcustard / gist:6028368

Created July 18, 2013 10:38

rentalcustard / gist:6028502

Created July 18, 2013 11:11

	~> irb
	1.9.3-p194 :001 > 10.0 / 0.0
	=> Infinity
	1.9.3-p194 :002 > 0.0 / 0.0
	=> NaN
	1.9.3-p194 :003 > 10 / 0
	ZeroDivisionError: divided by 0
	from (irb):3:in `/'
	from (irb):3
	from /Users/thomasstuart/.rvm/rubies/ruby-1.9.3-p194/bin/irb:16:in `<main>'

rentalcustard / Doing it in Ruby

Last active December 20, 2015 08:59

	1.9.3p448 :007 > Resource.all.sort_by(&:average_rating)
	Resource Load (0.4ms) SELECT "resources".* FROM "resources"
	Rating Load (0.3ms) SELECT "ratings".* FROM "ratings" WHERE "ratings"."resource_id" = $1 ORDER BY "ratings"."id" ASC LIMIT 1 [["resource_id", 1]]
	Rating Load (0.2ms) SELECT "ratings".* FROM "ratings" WHERE "ratings"."resource_id" = $1 [["resource_id", 1]]
	Rating Load (0.2ms) SELECT "ratings".* FROM "ratings" WHERE "ratings"."resource_id" = $1 ORDER BY "ratings"."id" ASC LIMIT 1 [["resource_id", 2]]
	Rating Load (0.2ms) SELECT "ratings".* FROM "ratings" WHERE "ratings"."resource_id" = $1 [["resource_id", 2]]
	=> [#<Resource id: 2, title: nil, summary: nil, link: nil, created_at: "2013-07-29 13:53:52", updated_at: "2013-07-29 13:53:52", user_id: nil>, #<Resource id: 1, title: nil, summary: nil, link: nil, created_at: "2013-07-29 13:52:36", updated_at: "2013-07-29 13:52:36", user_id: nil>]

rentalcustard / gist:6112853

Created July 30, 2013 13:23

Show the contents of all files changed in a commit at the time of the commit

	git show --name-only REVISION --pretty="format:" \| while read file
	do
	echo $file:
	git show REVISION:$file
	done \| cat

rentalcustard / gist:6165204

Created August 6, 2013 14:54

	#if I have...

	A.new(B.new(C.new(D.new)))

	#is there some way (some inject sorcery?) to construct this from a list of the classes?

	list = [A, B, C, D]

rentalcustard / gist:6778183

Last active December 24, 2015 09:38

	11:30 < txus> what does "cis" mean??
	11:30 < jkleske> mortice: no, definitely not.
	11:30 < medk> 10:37 piman_ ➤ if you are comfortable with your birth sex/gender assignment, you are cis.
	11:30 < fwg_> now we need the bot
	11:32 < piman_> Just, in general, I don't like comparisons of "well, X is more diverse than Y", because it always seems to ignore some axes.
	11:32 < mortice> fair
	11:33 < mortice> i also don't think it's relevant; saying "berlin is more diverse than X" doesn't mean we don't have to work to improve diversity
	11:33 < fwg_> well it can only be said as a subjective perception
	11:33 < gkarekinian> Most meetups in Berlin are just white males
	11:34 < jkleske> full ack

rentalcustard / repo.rb

Last active August 29, 2015 14:01 — forked from ernie/repo.rb

	class PersonRepository < Norm::PostgreSQLRepository

	def named(name)
	select_records(select_statement.where(:name => name)
	end

	def named_ordered_by_created_at(name)
	select_records(select_statement.
	where(:name => name).
	order(:created_at, :desc))

rentalcustard / gist:c1c3872933856d63be44

Last active August 29, 2015 14:04

Type problems

	numberwang :: (Floating a) => a -> a -> String
	numberwang x y
	\| x / y ^ 2 <= 18.5 = "a"
	\| x / y ^ 2 <= 25.0 = "b"
	\| x / y ^ 2 <= 30.0 = "c"

rentalcustard / gist:5a6181c4de9a49e3204b

Created September 11, 2014 17:13

	(defmacro new-if [pred then-clause else-clause]
	`(cond ~pred ~then-clause
	:else ~else-clause))

	"This works, in that if I call it like so:
	"

	(new-if (= 2 3) (while true (print "hi")) :bye)

	"I don't get an infinite loop, but I don't understand how. I've unquoted everything in the macro body, so shouldn't the normal evaluation order apply? Why doesn't it evaluate then-clause when I do it this way?

Tom Stuart rentalcustard