forked from shackbarth/sharpen-your-saw
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathindex.html
233 lines (206 loc) · 6.45 KB
/
index.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Sharpen Your Saw 4</title>
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/solarized.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h2>Sharpen Your Saw (5)</h2>
<ol>
<li class="fragment">The Presentation</li>
<li class="fragment">The Challenge</li>
<li class="fragment">Show and Tell</li>
</ol>
</section>
<section>
<h3>Redux</h3>
<div class="fragment">Library for managing application state</div>
<div class="fragment">Commonly paired with React</div>
<!-- poll audience -->
</section>
<section>
<section>
<h3>Beginning of the slides about React</h3>
<div class="fragment">Initial renders are easy. Mutating UI is hard.</div>
<div class="fragment">Pure functions are good. Side effects are bad.</div>
</section>
<section>
<h3>Write as if UI were a pure function of state</h3>
<div class="fragment">Lots of mutative magic under the hood</div>
</section>
</section>
<section>
<section>
<h3>Application state</h3>
<div class="fragment">What if you could manage it with pure functions?</div>
<div class="fragment">
<pre><code class="hljs">
(oldState, action) => newState
</code></pre>
</div>
<div class="fragment">
<pre><code class="hljs">
function updateState (oldState, action) {
return someTransformation(oldState, action.releventPayload);
}
</code></pre>
</div>
<div class="fragment">
<pre><code class="hljs">
function incrementState (oldState, action) {
return _.assign({}, state, {
counter: state.counter + action.incrementBy
});
}
</code></pre>
</div>
</section>
<section>
<h3>Before</h3>
<pre><code class="hljs">
handleChange(event) {
this.setState({ fieldValue: event.target.value });
}
</code></pre>
<h3>After</h3>
<pre><code class="hljs">
handleChange(event) {
this.props.dispatch({
type: "SET_FIELD_VALUE",
value: event.target.value
});
}
</code></pre>
<pre><code class="hljs">
function fieldValueReducer(state, action) {
return _.assign({}, state, { fieldValue: action.value });
}
</code></pre>
</section>
</section>
<section>
<section>
<h3>Two Gripes</h3>
<div class="fragment">1. Too much boilerplate</div>
<div class="fragment">2. Writing immutable code can be painful</div>
</section>
<section>
<h3>Mutable code</h3>
<pre><code class="hljs">
const oldState = { size: 2 };
const newState = oldState;
newState.size = 4;
oldState === newState
// true
</code></pre>
</section>
<section>
<h3>Immutable code</h3>
<pre><code class="hljs">
const oldState = { size: 2 };
const newState = _.assign({}, oldState, { size: 4 });
oldState === newState
// false
</code></pre>
</section>
<section>
<h3>Immutable code in Redux</h3>
<pre><code class="hljs">
function updateSize(state, action) {
return _.assign({}, state, { size: action.size });
}
</code></pre>
</section>
<section>
<h3>Immutable code in Redux</h3>
<pre><code class="hljs">
function updateSizeOfItemInArray(state, action) {
return _.assign({}, state, {
itemList: [
...state.itemList.slice(0, action.index),
_.assign({}, state.itemList[action.index], {
size: action.size
}),
...state.itemList.slice(action.index + 1)
]
});
}
</code></pre>
</section>
<section>
<h3>Immutable code in Redux</h3>
<pre><code class="hljs">
function updateSizeOfItemInArray(state, action) {
const newState = _.cloneDeep(state);
newState[action.index].size = action.size;
return newState;
}
</code></pre>
</section>
</section>
</section>
<section>
<section>
<h3>Part 2: The Challenge</h3>
</section>
</section>
<section>
<section>
<h3>Part 3: Show and Tell</h3>
</section>
<section>
<h3></h3>
<pre><code class="hljs" style="font-size:14px;line-height:16px;">
</code></pre>
</section>
<section>
<h3></h3>
<pre><code class="hljs" style="font-size:14px;line-height:16px;">
</code></pre>
</section>
<section>
<h3></h3>
<pre><code class="hljs" style="font-size:14px;line-height:16px;">
</code></pre>
</section>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>
// Full list of configuration options available at:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
transition: 'convex', // none/fade/slide/convex/concave/zoom
// Optional reveal.js plugins
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true },
{ src: 'plugin/notes/notes.js', async: true }
]
});
</script>
</body>
</html>