Feature-Request: Add Range type data
new Array(myRange) could never work, but [...myRange] could.
On 07/14/2016 09:33 PM, Dayvson Lima wrote:
Example:
var myRange = new Range(0,4);
myRange == (0..4) #=> true
This (0..4) syntax doesn't exist, afaik. Do you mean myRange == [0,1,2,3,4]? Given that [1,2] != [1,2], I don't think so. I'm assuming you meant that as shorthand.
new Array(myRange) #=> [0, 1, 2, 3, 4]
I'm not sure what this gives you over
var Range = function*(start, end) { let i = start; while (i <= end) yield i++; };
var myRange = Range(0, 4); new Array(myRange); # [0, 1, 2, 3, 4], but it empties out myRange [...Range(0, 4)]; # [0, 1, 2, 3, 4]
var charRange = new Range('a', ' d'); #=> ('a'..'d')
Ugh. This is very latin1-centric. What is 'a'..'d', again? a ä á à b ç c d, perhaps? (Yes, charCodeAt(0) offers a possible interpretation, but it's somewhat random.) And what is Range('aa', 'bb')? Range('a', 'bb')? Range('A', 'a')? Keep away from characters; they aren't numbers drawn from any useful 1-dimensional space.
this feature request is inspired by the successful Range object behavior in ruby language
ruby-doc.org/core-2.2.0/Range.html
the intention is to have something like interface to work with value ranges
2016-07-15 14:35 GMT-03:00 Steve Fink <sphink at gmail.com>:
Example:
var myRange = new Range(0,4);
myRange == (0..4) #=> true
new Array(myRange) #=> [0, 1, 2, 3, 4]
var charRange = new Range('a', ' d'); #=> ('a'..'d')
new Array(myRange) #=> ['a', 'b', 'c', 'd']
Example: var myRange = new Range(0,4); myRange == (0..4) #=> true new Array(myRange) #=> [0, 1, 2, 3, 4] var charRange = new Range('a', ' d'); #=> ('a'..'d') new Array(myRange) #=> ['a', 'b', 'c', 'd'] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20160715/8658c7ff/attachment.html>