Takeshi Matsuoka tachesimazzoca

tachesimazzoca / gist:3615945

Last active October 10, 2015 02:08

Set a default value for an empty string #scala

	val strings = Array("Foo", "") map { str =>
	Some(str).filter(_ != "").getOrElse("Bar")
	}
	strings.foreach(println)

tachesimazzoca / gist:3616882

Last active October 10, 2015 02:17

Parse a time string #scala

	val timeParser: (String => (String, String)) = { str =>
	val ptn = """^(0?[0-9]\|1[0-9]\|2[0-3]):(0?[0-9]\|[1-5][0-9])$""".r
	ptn findFirstIn str match {
	case Some(ptn(h, m)) => ("%02d".format(h.toInt), "%02d".format(m.toInt))
	case None => ("--", "--")
	}
	}

	Array("01:23", "1:23", "12:34", "23:60", "25:00") foreach { str =>
	val (hour, min) = timeParser(str)

tachesimazzoca / gist:3617264

Last active October 10, 2015 02:18

Regex examples #scala

	val urlMatcher: (String => Option[Map[Symbol, String]]) = { str =>
	val ptn = """^(https?)://([^/]+)(.*)$""".r
	for { ptn(m1, m2, m3) <- ptn findFirstIn str } yield {
	Map(
	'scheme -> m1,
	'host -> m2,
	'uri -> m3
	)
	}
	}

tachesimazzoca / gist:3617437

Last active October 10, 2015 02:18

Date format #scala

	import java.util.Date

	// Use StringLike#format
	println("%tY-%<tm-%<td %<tH:%<tM:%<tS".format(new Date()))

tachesimazzoca / gist:3698095

Last active October 10, 2015 13:37

Loan Pattern #scala

	import java.io._

	object HexDumper {

	def main(args: Array[String]) {

	def withCloseable(args: Array[Closeable])(f: (Array[Closeable]) => Unit) =
	try f(args) finally args map { _.close }

	withCloseable(

tachesimazzoca / .vimrc

Last active October 10, 2015 19:38

.vimrc #vim

tachesimazzoca / gist:3747707

Created September 19, 2012 04:34

Unix - date

tachesimazzoca / gist:3847867

Last active October 11, 2015 10:57

Add a directory to the library search path #ruby

	$:.unshift File.dirname(__FILE__)
	$:.unshift File.join(File.dirname(__FILE__), *%w[.. lib]) # "../lib"

tachesimazzoca / gist:3891036

Last active October 11, 2015 17:07

Makefile for Unicorn #ruby

	PID = /path/to/unicorn.pid

	all:
	@echo Usage: (start\|stop\|restart\|graceful)
	start:
	@bundle exec unicorn -c config/unicorn.rb -D
	stop:
	@[[ -s "$(PID)" ]] && kill -QUIT `cat $(PID)`
	restart:
	@[[ -s "$(PID)" ]] && kill -HUP `cat $(PID)`

tachesimazzoca / gist:4343390

Last active December 9, 2015 23:19

Adding swap space #linux

	% su -
	% dd if=/dev/zero of=/swap bs=1M count=2048
	% mkswap /swap
	% swapon /swap
	% vi /etc/fstab
	....
	/swap swap swap defaults 0 0