<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<h2>Create your snippet's HTML, CSS and Javascript in the editor tabs</h2>
</div>
</div>
const a = 'a';
const b = 'b';
const oA = { a }
const oB = { b }
const c = { ...oA, ...oB }
const [t, u] = ['a', 'b'];
//const { type, payload } = action;
const blep = {
blop: 'blop'
};
// The following is equivalent to:
// const blop = blep.blop;
const { blop } = blep;
blop; // 'blop'
const aTail = (head, ...tail) => tail
aTail(1,2,3)
const double = x => x * 2
const arr = [1, 2, 3]
arr.map(double)
const startsWithS = words => {
const filtered = [];
for (let i = 0, { length } = words; i < length; i++) {
const word = words[i];
if (word.startsWith('s')) filtered.push(word);
}
return filtered;
};
startsWithS(['oops', 'gasp', 'shout', 'sun']);
// [ 'shout', 'sun' ]
const reduce = (reducer, initial, arr) => {
// shared stuff
let acc = initial;
for (let i = 0, length = arr.length; i < length; i++) {
// unique stuff in reducer() call
acc = reducer(acc, arr[i]);
// more shared stuff
}
return acc;
};
reduce((acc, curr) => acc + curr, 0, [1,2,3]); // 6
const filter = (
fn, arr
) => reduce((acc, curr) => fn(curr) ?
acc.concat([curr]) :
acc, [], arr
);
const censor = words => filter(
word => word.length !== 4,
words
);
[2, 4, 6].reduce((acc, n) => acc + n, 0); // 12
const add1ThenDouble = pipe(
add1,
double
);
add1ThenDouble(2); // 6
// ((2 + 1 = 3) * 2 = 6)
