That's true - I will make a test case that doesn't include that function. The point of using that function was to test not only concat parse but passing to a usable function - however, i'm sure there are differences in each browser's console.log, so this kind of bonks the test. The updated test you made is far better - use that going forward!
======================== Jess Jacobs aki...@gmail.com flavors.me/akisma - music, sound design, code. On Fri, Oct 14, 2011 at 10:47 AM, Andrew Hedges <and...@hedges.name> wrote: > Hi Jess, > > I'm not sure what the purpose of the consumeURL function is if you just > want to test the speed of > assigning/concatenating strings. I made a modified test that strips out > that part of things and adds another test case > (using join on an array of strings, which, unsurprisingly is way slower in > this case but can be faster when joining > many strings). > > http://jsperf.com/string-concat-vs-long-lines/2 > > ----- > and...@hedges.name / http://andrew.hedges.name/ > > On Sat, October 15, 2011 9:25 am, Jess Jacobs wrote: > > Hello everyone, > > > > I ran into an interesting issue while trying to prove that adding string > > concats to a long running string simply to fit the "80 char/line" idea > was > > not a good thing. > > > > http://jsperf.com/string-concat-vs-long-lines > > > > I discovered, unless my tests have errors (please call 'em out if so!): > > > > 1. string declaration without concats is faster than concatenating two > > strings (obviously) > > 2. concatenating string + string is slower than concatenating var (with a > > string value) + string (interesting) > > 3. concatenating a var (string value) with a string is FASTER than > declaring > > a variable with only a string value (very interesting) > > > > The tests are vastly different for each browser, with Safari taking an > > unbelievable lead in string processing over Chrome. Firefox came in dead > > last of the three (I didn't test IE, but if someone wants to, I'm > definitely > > curious). Some test results differ even in which method is fastest in a > > particular browser, but not typically by much. While the browser speed > > differences were surprising to me, what's more surprising is item #3 > above. > > > > Items 1 and 2 make a lot of sense to me; 1 being obvious, 2 I'm figuring > > could be explained by primitive type conversion possibly not having to > > happen due to one of the concat'd items already being a String object - > but > > now that I think about it, aren't they both primitive types since neither > > were created as new String(), etc? 3, however, blows my mind. How on > earth > > is it faster to concat a var and a string and assign it to a var than it > is > > to simply assign a string value to a var? > > > > I'd really love to get way down to the nitty gritty on this, so anyone > with > > any insight, your replies are appreciated. Also would love to see any > test > > cases (more robust than mine) that could illustrate better what exactly > is > > going on here. > > > > Thanks, > > Jess > > > > ======================== > > Jess Jacobs > > aki...@gmail.com > > flavors.me/akisma - music, sound design, code. > > > > -- > > To view archived discussions from the original JSMentors Mailman list: > > http://www.mail-archive.com/jsmentors@jsmentors.com/ > > > > To search via a non-Google archive, visit here: > http://www.mail-archive.com/jsmentors@googlegroups.com/ > > > > To unsubscribe from this group, send email to > > jsmentors+unsubscr...@googlegroups.com > > > > -- > To view archived discussions from the original JSMentors Mailman list: > http://www.mail-archive.com/jsmentors@jsmentors.com/ > > To search via a non-Google archive, visit here: > http://www.mail-archive.com/jsmentors@googlegroups.com/ > > To unsubscribe from this group, send email to > jsmentors+unsubscr...@googlegroups.com > -- To view archived discussions from the original JSMentors Mailman list: http://www.mail-archive.com/jsmentors@jsmentors.com/ To search via a non-Google archive, visit here: http://www.mail-archive.com/jsmentors@googlegroups.com/ To unsubscribe from this group, send email to jsmentors+unsubscr...@googlegroups.com
