Throwing StopIteration in array extras to stop the iteration

Andrea Giammarchi andrea.giammarchi at gmail.com
Mon Mar 4 08:39:51 PST 2013


" that does not find a thing, that find an index" I meant that simply store
once the index without needing an outer scope access and variable inside
the closure


On Mon, Mar 4, 2013 at 8:38 AM, Andrea Giammarchi <
andrea.giammarchi at gmail.com> wrote:

> I use RegExp.$1 , RegExp.$2, etc quite a lot since I am a huge fan of the
> RAM and I believe creating a redundant array of matches for no reason since
> these are retrievable in any case through the RegExp constructor,
> considering exec and match points to those RegExp properties anyhow, ain't
> needed when re.test(value) is involved.
>
> If re.test(value) RegExp.$1;
>
> As easy as that: 1) is *not* a bad practice and 2) is less redundant than
> if (re.test(value)) match = re.exec(value)[1];
>
> I might agree about the ugly ness, the fact MDN is lacking those
> properties I believe defined in the specs does not mean those properties
> are bad (as I have just explained)
>
> Also, that does not find a thing, that find an index ... and I forgot the
> +RegExp['$&'] plus sign to have the integer.
>
> We are programmers, we find solutions/alternatives/optimizations ... right?
>
> br
>
>
>
> On Mon, Mar 4, 2013 at 8:24 AM, Jeff Walden <jwalden+es at mit.edu> wrote:
>
>> On 03/03/2013 06:53 PM, Andrea Giammarchi wrote:
>> > I had to check msdn rather than MDN since latter does not mention it
>> while mans shows an example:
>> http://msdn.microsoft.com/en-us/library/ie/3k9c4a32(v=vs.94).aspx
>>
>> The RegExp statics aren't mentioned because they're a bad idea, imposing
>> costs of some sort on pretty much all regular expression uses.  Don't use
>> them!
>>
>> And, um, this is quite possibly the most awful way to find a value in an
>> array that I've ever seen.  Even setting aside the statics usage!
>>
>> Jeff
>>
>
>
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