What scenarios do you need to declare a new variable equal to its current declaration or a default value?
On Sun, Apr 17, 2016 at 8:21 AM, even stensberg <evenstensb...@gmail.com> wrote: > I've seen a lot of code using an extra type to have as a fallback. This to > me seems like not a very good way of putting use of the logical OR. Here's > an example: > > `var itemList = itemList || 'something went extremely wrong'` > > > This is a really hacky way of doing things. I don't think you should > assign your variable to a default by doing this. > > > Been back and forth by this "issue" with some of the ReactJS members at > GitHub, and while saying this is a "stylus" thing, I disagree. It is more > about not reiterating your code. > > Options could be: > > -tenaries - long & !clean codelines > -default params (ES) , though it won't be a general use case > > There is already a lot of assignment, string and so on operators, but I > don't really seem any of them touch this, except maybe the bit-wise OR > assignment Operator. To read more about that, check these two links out: > > https://msdn.microsoft.com/en-us/library/81bads72(v=vs.94).aspx > http://web.eecs.umich.edu/~bartlett/jsops.html > http://stackoverflow.com/a/14871137/5893008 > > And that is really not the use case here. We don't want a bit-wise, we > want a logical OR. > > So here is what I come up with. It's not rocket science but ... nah, it's > pretty straight forward.. > > `var listItem || = 'I love open source!'` > > > For me, this is one thousand times more clean and it makes sense. > JavaScript teaches us and wants us to use `+ =`,` - =` and any other type > of "abbreviation" , so this makes perfectly sense for me. Either I'm crazy, > but it seems like this should have been implemented a long time ago. > ( Perhaps I'm both). > > Implementation will be another issue, but let us discuss that too( just > keep in mind this is conceptional) > > > Without further ado, I leave this up to you to discuss, and hopefully a > champion to fetch up to the committee. > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > >
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