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<!DOCTYPE html>
<!--
Copyright 2010 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Original slides: Marcin Wichary ([email protected])
Modifications: Ernest Delgado ([email protected])
Alex Russell ([email protected])
landslide modifications: Adam Zapletal ([email protected])
Nicolas Perriault ([email protected])
-->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<title>Github - an Introduction</title>
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.kt { color: #B00040 } /* Keyword.Type */
.m { color: #666666 } /* Literal.Number */
.s { color: #BA2121 } /* Literal.String */
.na { color: #7D9029 } /* Name.Attribute */
.nb { color: #008000 } /* Name.Builtin */
.nc { color: #0000FF; font-weight: bold } /* Name.Class */
.no { color: #880000 } /* Name.Constant */
.nd { color: #AA22FF } /* Name.Decorator */
.ni { color: #999999; font-weight: bold } /* Name.Entity */
.ne { color: #D2413A; font-weight: bold } /* Name.Exception */
.nf { color: #0000FF } /* Name.Function */
.nl { color: #A0A000 } /* Name.Label */
.nn { color: #0000FF; font-weight: bold } /* Name.Namespace */
.nt { color: #008000; font-weight: bold } /* Name.Tag */
.nv { color: #19177C } /* Name.Variable */
.ow { color: #AA22FF; font-weight: bold } /* Operator.Word */
.w { color: #bbbbbb } /* Text.Whitespace */
.mf { color: #666666 } /* Literal.Number.Float */
.mh { color: #666666 } /* Literal.Number.Hex */
.mi { color: #666666 } /* Literal.Number.Integer */
.mo { color: #666666 } /* Literal.Number.Oct */
.sb { color: #BA2121 } /* Literal.String.Backtick */
.sc { color: #BA2121 } /* Literal.String.Char */
.sd { color: #BA2121; font-style: italic } /* Literal.String.Doc */
.s2 { color: #BA2121 } /* Literal.String.Double */
.se { color: #BB6622; font-weight: bold } /* Literal.String.Escape */
.sh { color: #BA2121 } /* Literal.String.Heredoc */
.si { color: #BB6688; font-weight: bold } /* Literal.String.Interpol */
.sx { color: #008000 } /* Literal.String.Other */
.sr { color: #BB6688 } /* Literal.String.Regex */
.s1 { color: #BA2121 } /* Literal.String.Single */
.ss { color: #19177C } /* Literal.String.Symbol */
.bp { color: #008000 } /* Name.Builtin.Pseudo */
.vc { color: #19177C } /* Name.Variable.Class */
.vg { color: #19177C } /* Name.Variable.Global */
.vi { color: #19177C } /* Name.Variable.Instance */
.il { color: #666666 } /* Literal.Number.Integer.Long */
#blank {
position: absolute;
top: 0;
left: 0;
background-color: black;
width: 100%;
height: 100%;
z-index: 64;
display: none;
}
</style>
<!-- /Styles -->
<!-- Javascripts -->
<script>
function main() {
// Since we don't have the fallback of attachEvent and
// other IE only stuff we won't try to run JS for IE.
// It will run though when using Google Chrome Frame
if (document.all) { return; }
var currentSlideNo;
var notesOn = false;
var expanded = false;
var hiddenContext = false;
var blanked = false;
var slides = document.getElementsByClassName('slide');
var touchStartX = 0;
var spaces = /\s+/, a1 = [''];
var tocOpened = false;
var helpOpened = false;
var overviewActive = false;
var modifierKeyDown = false;
var scale = 1;
var showingPresenterView = false;
var presenterViewWin = null;
var isPresenterView = false;
var str2array = function(s) {
if (typeof s == 'string' || s instanceof String) {
if (s.indexOf(' ') < 0) {
a1[0] = s;
return a1;
} else {
return s.split(spaces);
}
}
return s;
};
var trim = function(str) {
return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
};
var addClass = function(node, classStr) {
classStr = str2array(classStr);
var cls = ' ' + node.className + ' ';
for (var i = 0, len = classStr.length, c; i < len; ++i) {
c = classStr[i];
if (c && cls.indexOf(' ' + c + ' ') < 0) {
cls += c + ' ';
}
}
node.className = trim(cls);
};
var removeClass = function(node, classStr) {
var cls;
if (!node) {
throw 'no node provided';
}
if (classStr !== undefined) {
classStr = str2array(classStr);
cls = ' ' + node.className + ' ';
for (var i = 0, len = classStr.length; i < len; ++i) {
cls = cls.replace(' ' + classStr[i] + ' ', ' ');
}
cls = trim(cls);
} else {
cls = '';
}
if (node.className != cls) {
node.className = cls;
}
};
var getSlideEl = function(slideNo) {
if (slideNo > 0) {
return slides[slideNo - 1];
} else {
return null;
}
};
var getSlideTitle = function(slideNo) {
var el = getSlideEl(slideNo);
if (el) {
var headers = el.getElementsByTagName('header');
if (headers.length > 0) {
return el.getElementsByTagName('header')[0].innerText;
}
}
return null;
};
var getSlidePresenterNote = function(slideNo) {
var el = getSlideEl(slideNo);
if (el) {
var n = el.getElementsByClassName('presenter_notes');
if (n.length > 0) {
return n[0];
}
}
return null;
};
var changeSlideElClass = function(slideNo, className) {
var el = getSlideEl(slideNo);
if (el) {
removeClass(el, 'far-past past current future far-future');
addClass(el, className);
}
};
var updateSlideClasses = function(updateOther) {
window.location.hash = (isPresenterView ? "presenter" : "slide") + currentSlideNo;
for (var i=1; i<currentSlideNo-1; i++) {
changeSlideElClass(i, 'far-past');
}
changeSlideElClass(currentSlideNo - 1, 'past');
changeSlideElClass(currentSlideNo, 'current');
changeSlideElClass(currentSlideNo + 1, 'future');
for (i=currentSlideNo+2; i<slides.length+1; i++) {
changeSlideElClass(i, 'far-future');
}
highlightCurrentTocLink();
processContext();
document.getElementsByTagName('title')[0].innerText = getSlideTitle(currentSlideNo);
updatePresenterNotes();
if (updateOther) { updateOtherPage(); }
};
var updatePresenterNotes = function() {
if (!isPresenterView) { return; }
var existingNote = document.getElementById('current_presenter_notes');
var currentNote = getSlidePresenterNote(currentSlideNo).cloneNode(true);
currentNote.setAttribute('id', 'presenter_note');
existingNote.replaceChild(currentNote, document.getElementById('presenter_note'));
};
var highlightCurrentTocLink = function() {
var toc = document.getElementById('toc');
if (toc) {
var tocRows = toc.getElementsByTagName('tr');
for (var i=0; i<tocRows.length; i++) {
removeClass(tocRows.item(i), 'active');
}
var currentTocRow = document.getElementById('toc-row-' + currentSlideNo);
if (currentTocRow) {
addClass(currentTocRow, 'active');
}
}
};
var updateOtherPage = function() {
if (!showingPresenterView) { return; }
var w = isPresenterView ? window.opener : presenterViewWin;
w.postMessage('slide#' + currentSlideNo, '*');
};
var nextSlide = function() {
if (currentSlideNo < slides.length) {
currentSlideNo++;
}
updateSlideClasses(true);
};
var prevSlide = function() {
if (currentSlideNo > 1) {
currentSlideNo--;
}
updateSlideClasses(true);
};
var showNotes = function() {
var notes = getSlideEl(currentSlideNo).getElementsByClassName('notes');
for (var i = 0, len = notes.length; i < len; i++) {
notes.item(i).style.display = (notesOn) ? 'none':'block';
}
notesOn = !notesOn;
};
var showSlideNumbers = function() {
var asides = document.getElementsByClassName('page_number');
var hidden = asides[0].style.display != 'block';
for (var i = 0; i < asides.length; i++) {
asides.item(i).style.display = hidden ? 'block' : 'none';
}
};
var showSlideSources = function() {
var asides = document.getElementsByClassName('source');
var hidden = asides[0].style.display != 'block';
for (var i = 0; i < asides.length; i++) {
asides.item(i).style.display = hidden ? 'block' : 'none';
}
};
var showToc = function() {
if (helpOpened) {
showHelp();
}
var toc = document.getElementById('toc');
if (toc) {
toc.style.marginLeft = tocOpened ? '-' + (toc.clientWidth + 20) + 'px' : '0px';
tocOpened = !tocOpened;
}
updateOverview();
};
var showHelp = function() {
if (tocOpened) {
showToc();
}
var help = document.getElementById('help');
if (help) {
help.style.marginLeft = helpOpened ? '-' + (help.clientWidth + 20) + 'px' : '0px';
helpOpened = !helpOpened;
}
};
var showPresenterView = function() {
if (isPresenterView) { return; }
if (showingPresenterView) {
presenterViewWin.close();
presenterViewWin = null;
showingPresenterView = false;
} else {
presenterViewWin = open(window.location.pathname + "#presenter" + currentSlideNo, 'presenter_notes',
'directories=no,location=no,toolbar=no,menubar=no,copyhistory=no');
showingPresenterView = true;
}
};
var switch3D = function() {
if (document.body.className.indexOf('three-d') == -1) {
document.getElementsByClassName('presentation')[0].style.webkitPerspective = '1000px';
document.body.className += ' three-d';
} else {
window.setTimeout('document.getElementsByClassName(\'presentation\')[0].style.webkitPerspective = \'0\';', 2000);
document.body.className = document.body.className.replace(/three-d/, '');
}
};
var toggleOverview = function() {
if (!overviewActive) {
addClass(document.body, 'expose');
overviewActive = true;
setScale(1);
} else {
removeClass(document.body, 'expose');
overviewActive = false;
if (expanded) {
setScale(scale); // restore scale
}
}
processContext();
updateOverview();
};
var updateOverview = function() {
try {
var presentation = document.getElementsByClassName('presentation')[0];
} catch (e) {
return;
}
if (isPresenterView) {
var action = overviewActive ? removeClass : addClass;
action(document.body, 'presenter_view');
}
var toc = document.getElementById('toc');
if (!toc) {
return;
}
if (!tocOpened || !overviewActive) {
presentation.style.marginLeft = '0px';
presentation.style.width = '100%';
} else {
presentation.style.marginLeft = toc.clientWidth + 'px';
presentation.style.width = (presentation.clientWidth - toc.clientWidth) + 'px';