Turn Coffeescript Loop Using Range Into ES6
Disclaimer: I don't know Coffeescript and, although I appreciate it has contributed towards the ES6 spec, I can't wait to see the back it. This Coffeescript loop (wrote by someone
Solution 1:
The generator solution you are looking for would be
function* range(i, end=Infinity) {
while (i <= end) {
yield i++;
}
}
// if (this.props.total > 1) - implicitly done by `range`
for (let page of range(1, this.props.total) {
active = page === +this.props.current;
}
Solution 2:
For generating any range of sequential integers of length k
starting at n
in JavaScript the following should work:
Array.apply(null, Array(k)).map((x, i) => i + n);
While not quite the same as the coffeescript range functionality, its probably close enough for most uses. Also despite being significantly more verbose has one decided advantage: you don't have to remember which of ..
and ...
is exclusive and which is inclusive.
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