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<% content_for(:head) do %>
<title>Lazy.js ES6 Generators Demo</title>
<%= stylesheet_link_tag("lib/codemirror") %>
<%= stylesheet_link_tag("demos/generators") %>
<%= javascript_include_tag("lib/lazy.min") %>
<%= javascript_include_tag("lib/codemirror") %>
<%= javascript_include_tag("lib/codemirror/javascript") %>
<%= javascript_include_tag("lib/lemming") %>
<%= javascript_include_tag("demos/generators") %>
<% end %>
<% content_for(:body) do %>
<div>
<header>
<h1>Lazy.js ES6 Generators Demo</h1>
</header>
<p>
In the <code><textarea></code> on the left, define an ES6
generator. In the middle, you can wrap this generator using
<code>Lazy(generator)</code> and then <code>map</code>,
<code>filter</code>, etc. to your heart's content. The resulting
sequence will be evaluated and shown on the right.
</p>
<p class="important">
This demo requires a browser which supports
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators">ES6 Generators</a>.
</p>
<p>
<small>Oh an by the way, in case you were wondering: this demo uses
<a href="https://github.com/dtao/lemming.js">lemming.js</a> to evaluate the code you
enter in the editors below. (And the editors use
<a href="http://codemirror.net">CodeMirror</a>.)</small>
</p>
<div id="workspace">
<div id="generator-wrapper">
<textarea id="generator">function generateRandoms(min, max) {
return function *randoms() {
while (true) {
yield min + Math.floor(Math.random() * (max - min));
};
};
}
</textarea>
</div>
<div id="sequence-wrapper">
<textarea id="sequence">// The numbers from 1-100 in random order
Lazy(generateRandoms(1, 100))
.uniq()
.take(10);
</textarea>
</div>
<div id="output-wrapper">
<textarea id="output"></textarea>
</div>
</div>
</div>
<% end %>
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