tkojitu’s gists

tkojitu / calc4.java

Created January 30, 2013 15:57

recursive descendent parsing. LL(1). removing left recursion.

	package llcalc;

	import java.util.StringTokenizer;

	class Expr {
	Term term;
	Expr2 expr2;
	Expr(Term term, Expr2 expr2) {
	this.term = term;
	this.expr2 = expr2;

tkojitu / calc3.rb

Last active December 11, 2015 22:19

from "The AWK Programming Language" (A.V.Aho, B.W.Kernighan, P.J.Weinberger) recursive descendent parser

	# from "The AWK Programming Language" (A.V.Aho, B.W.Kernighan, P.J.Weinberger)
	# recursive descendent parser

	def expr
	e = term
	while $tokens[$index] == "+" \|\| $tokens[$index] == "-"
	$index += 1
	e = ($tokens[$index - 1] == "+") ? e + term : e - term
	end
	return e

tkojitu / AppendFile.vbs

Created November 30, 2012 09:20

How to append text in VBScript.

	Sub AppendFile(inFilepath, outFilepath)
	On Error Resume Next
	ForAppending = 8
	Set output = gFileSystem.OpenTextFile(outFilepath, ForAppending, True)
	Set input = gFileSystem.OpenTextFile(inFilepath)
	Do Until input.AtEndOfStream = true
	line = input.ReadLine
	output.WriteLine line
	Loop
	input.Close

tkojitu / run.html

Created October 25, 2012 14:16

Run!

	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<meta name="viewport" content="initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, width=device-width, target-densitydpi=device-dpi">
	<title>Run!</title>
	<style>
	canvas {
	border: 1px solid #9C9898;
	}
	</style>

tkojitu / ripple.html

Created October 21, 2012 15:32

touch the canvas to ripple.

	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<meta name="viewport" content="initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, width=device-width, target-densitydpi=device-dpi">
	<title>Ripple</title>
	<style>
	canvas {
	border: 1px solid #9C9898;
	}
	</style>

tkojitu / drawline.html

Created October 21, 2012 11:00

draw lines in a canvas. translate event coord to canvas coord.

	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<meta name="viewport" content="initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, width=device-width, target-densitydpi=device-dpi">
	<title>Draw Lines</title>
	<style>
	body {
	margin: 0px;
	padding: 0px;
	}

tkojitu / rect.html

Created June 10, 2012 04:12

Draw and rotate a rect in JavaScript Canvas.

tkojitu / rb.rb

Created May 7, 2012 03:55

okwave.jp/qa/q7454381.html

	class MyRecord
	def initialize(line)
	@alpha, @number, @value = line.split
	end
	attr_reader :alpha, :number, :value
	end

	def print_alpha_number(records)
	num_keys = records.map{\|rec\| rec.number}.uniq.sort
	alpha_keys = records.map{\|rec\| rec.alpha}.uniq.sort

tkojitu / rotate.rb

Created March 13, 2012 13:46

	include Java

	import java.awt.Rectangle
	import java.awt.geom.Ellipse2D
	import java.awt.geom.Line2D
	import java.awt.geom.Point2D
	import java.awt.geom.Rectangle2D
	import java.lang.Math
	import javax.swing.JFrame

tkojitu / SerialSwitch.java

Created February 27, 2012 14:43

send command to arduino via serial (usb) port.

	import gnu.io.CommPortIdentifier;
	import gnu.io.PortInUseException;
	import gnu.io.SerialPort;
	import gnu.io.UnsupportedCommOperationException;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.io.ByteArrayOutputStream;
	import java.io.IOException;
	import java.io.OutputStream;
	import java.io.OutputStreamWriter;

aka. bakaiku or @gdgdiler tkojitu