Tabs slower than spaces in Firefox

#1

Post by emilong » Tue, Jul 19, 2016, 2:03 AM UTC

Tabs slower than spaces in Firefox
bugzilla.mozilla.org

Re: Tabs slower than spaces in Firefox

#2

Post by rosstex » Tue, Jul 19, 2016, 5:02 AM UTC

From the comments, it looks like there's an "optimization" that kicks in when a function is under 100 characters long. It seems that optimization is backfiring and actually making a tabbed function slower.

Re: Tabs slower than spaces in Firefox

#3

Post by peterkelly » Tue, Jul 19, 2016, 5:39 AM UTC

I'm going to use this as fodder next time I get into an argument with someone about why spaces are better than tabs when writing code.

Or maybe I've just been watching too much silicon valley...

Re: Tabs slower than spaces in Firefox

#4

Post by gnicholas » Tue, Jul 19, 2016, 5:42 AM UTC

Read the title and thought it had to do with tabbed browsing versus using different Spaces in OS X.

Re: Tabs slower than spaces in Firefox

#5

Post by kibwen » Tue, Jul 19, 2016, 5:48 AM UTC

rosstex wrote: post #2

From the comments, it looks like there's an "optimization" that kicks in when a function is under 100 characters long. It seems that optimization is backfiring and actually making a tabbed function slower.

Interesting to note that character-based optimizations in JS engines are somewhat common (though this article is a few years old): http://jayconrod.com/posts/54/a-tour-of-v8-crankshaft-the-op...

Re: Tabs slower than spaces in Firefox

#6

Post by [deleted] » Tue, Jul 19, 2016, 5:55 AM UTC

[deleted]

Re: Tabs slower than spaces in Firefox

#7

Post by db48x » Tue, Jul 19, 2016, 6:02 AM UTC

This is great bug, right up there with the Dwarf Fortress bug that involved a dwarf planting a bed in a farm plot.

Re: Tabs slower than spaces in Firefox

#8

Post by jasonm23 » Tue, Jul 19, 2016, 6:06 AM UTC

peterkelly wrote: post #3

I'm going to use this as fodder next time I get into an argument with someone about why spaces are better than tabs when writing code. Or maybe I've just been watching too much silicon valley...

Tabs are the devils puss is a more convincing argument for the religiously motivated Tabs user.

They don't respond to reason. Obviously. /s

Re: Tabs slower than spaces in Firefox

#9

Post by Daneel_ » Tue, Jul 19, 2016, 6:07 AM UTC

db48x wrote: post #7

This is great bug, right up there with the Dwarf Fortress bug that involved a dwarf planting a bed in a farm plot.

Would you be able to link this? I'm interested in reading about it. A quick google for 'dwarf planting a bed in a farm plot bug fortress' turns up nothing relevant at a glance.

Re: Tabs slower than spaces in Firefox

#10

Post by drewrv » Tue, Jul 19, 2016, 6:10 AM UTC

peterkelly wrote: post #3

I'm going to use this as fodder next time I get into an argument with someone about why spaces are better than tabs when writing code. Or maybe I've just been watching too much silicon valley...

I thought that was the most unrealistic thing this season: a supposedly genius programmer who loves tabs and hates spaces.