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Groups > comp.lang.javascript > #27037
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Bignumb addition function, suggestion improvements. |
| Date | 2015-03-14 20:56 +0100 |
| Organization | PointedEars Software (PES) |
| Message-ID | <1870601.SULIsds41C@PointedEars.de> (permalink) |
| References | <f9fe170d-9fdf-42bf-9fca-23a3bc48f76c@googlegroups.com> <87fv97u25x.fsf@bsb.me.uk> <531f97ee-89e2-49a6-b9a8-4b11102e998c@googlegroups.com> <878uezpdv6.fsf@bsb.me.uk> |
Ben Bacarisse wrote:
> jonas.thornvall@gmail.com writes:
>> Den lördag 14 mars 2015 kl. 14:41:35 UTC+1 skrev Ben Bacarisse:
>>> String.prototype.digitValueAt = function (pos) {
>>> var d = this.charCodeAt(pos);
>>> return isNaN(d) ? 0 : d - 48;
>>> }
>>
>> I do not get ? 0 : d - 48;
>
> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Conditional_Operator
>
> The 48 is "0".charCodeAt(0) which would be have been more
> self-documenting.
Apropos:
s.digitValueAt(pos)
where s is a String, would be equivalent to
+s.charAt(pos) || 0
or even
+s[pos] || 0
in JavaScript 1.5+ and more recent implementations of ECMAScript. (“…[…]”
is _not_ an operation.)
<http://PointedEars.de/es-matrix/?filter=%5E%5C%2B%7C%5Estring%5C%5B%7CcharAt>
--
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
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Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-14 04:15 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-14 04:40 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-14 04:56 -0700
Re: Bignumb addition function, suggestion improvements. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-14 13:41 +0000
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-14 10:17 -0700
Re: Bignumb addition function, suggestion improvements. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-14 19:39 +0000
Re: Bignumb addition function, suggestion improvements. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-03-14 20:56 +0100
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 01:52 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 02:57 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 03:07 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-14 10:57 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 03:40 -0700
Re: Bignumb addition function, suggestion improvements. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-15 11:06 +0000
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 04:09 -0700
Re: Bignumb addition function, suggestion improvements. Dr.Kral@nyc.rr.com - 2015-03-14 19:51 -0400
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-14 23:57 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 00:08 -0700
Re: Bignumb addition function, suggestion improvements. John Harris <niam@jghnorth.org.uk.invalid> - 2015-03-15 10:46 +0000
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 04:12 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 06:00 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 04:27 -0700
Re: Bignumb addition function, suggestion improvements. jonas.thornvall@gmail.com - 2015-03-15 05:30 -0700
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