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|---|---|
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
| Newsgroups | comp.lang.javascript |
| Subject | Re: A proposition for a conditional loop. |
| Date | Fri, 27 Sep 2019 22:05:27 +0100 |
| Organization | A noiseless patient Spider |
| Lines | 46 |
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Jonas Thörnvall <jonas.thornvall@gmail.com> writes:
> Den fredag 27 september 2019 kl. 21:23:35 UTC+2 skrev Ben Bacarisse:
>> Jonas Thörnvall <jonas.thornvall@gmail.com> writes:
>> <cut>
>> > compare with
>> >
>> > while(z<nbrOfEV){
>> > if(track[rectrack].midiMess[z].data1==track[rectrack].midiMess[midiEv].data1){
>> > ctm.fillStyle = "#000a4d";
>> > ctm.fillRect(scrollBarPos-BACKOFFSET[midiEv]-5,(PistartX+keyHeight*88)-(keyHeight*(track[rectrack].midiMess[midiEv].data1-8))-1,barLength[midiEv]+50 ,keyHeight+2);
>> > ctm.fillStyle = pcolor[track[rectrack].midiMess[midiEv].data1];
>> > ctm.fillRect(scrollBarPos-BACKOFFSET[midiEv],(PistartX+keyHeight*88)-(keyHeight*(track[rectrack].midiMess[midiEv].data1-8)), barLength[midiEv]+50,keyHeight);
>> >
>> > break;
>> > }
>> > z++;
>> > }
>> > }
>>
>> One way to do a search for an element is with Array.prototype.find or
>> similar, but the logic of your example looks very odd, so this soer of
>> search may not be what you are really doing.
>>
>> The odd part is that the block of code does not use the element found
>> but the one being tested against. If midiEv is < nbrOfEV, then a
>> matching z certainly will be found. It might be some z < midiEv but it
>> will be no later than when z == midiEv. But in both cases (z < midiEv
>> and z == midiEv), the body of the 'if' does the same thing. So,
>> provided z starts at 0, you are really only testing
>>
>> if (midiEv < nbrOfEV) { ... }
This is not quite right, but there's not enough detail to be sure what
you intended. You certainly don't need any loop when midiEv < nbrOfEV,
but whether you need one when midiEv >= nbrOfEV is not clear.
<cut>
> I am not sure i think you missunderstood ask John he seem to
> understand the element match and increment.
I don't think you understand what John wrote. It looked to me like his
answer was somewhat tongue-in-cheek.
--
Ben.
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A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-23 00:55 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-23 01:05 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-23 01:14 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-23 01:16 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-24 05:12 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-24 22:27 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-24 22:39 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-25 09:05 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-25 02:47 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-25 13:13 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-25 05:13 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-25 15:04 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-25 06:10 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-25 15:50 +0100
Re: A proposition for a conditional loop. Tim Streater <timstreater@greenbee.net> - 2019-09-25 16:00 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-25 10:20 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-25 10:26 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-25 19:18 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-25 12:19 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-26 10:48 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-26 04:38 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-26 18:05 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-26 10:54 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-27 10:06 +0100
Re: A proposition for a conditional loop. dr.j.r.stockton@gmail.com - 2019-09-27 02:34 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 05:32 -0700
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 05:36 -0700
Re: A proposition for a conditional loop. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-09-27 20:23 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 12:45 -0700
Re: A proposition for a conditional loop. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-09-27 22:05 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 14:39 -0700
Re: A proposition for a conditional loop. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-09-28 00:16 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 17:10 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-28 17:28 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-28 11:34 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-28 22:23 +0200
Re: A proposition for a conditional loop. Tim Streater <timstreater@greenbee.net> - 2019-09-28 21:42 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-29 07:40 -0700
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-29 18:33 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-29 09:58 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-29 19:18 +0100
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-29 21:02 +0200
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-29 13:54 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-28 10:41 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 13:17 -0700
Re: A proposition for a conditional loop. Tim Streater <timstreater@greenbee.net> - 2019-09-27 13:41 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 06:01 -0700
Re: A proposition for a conditional loop. Tim Streater <timstreater@greenbee.net> - 2019-09-27 14:03 +0100
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-27 19:23 +0100
Re: A proposition for a conditional loop. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-27 12:06 -0700
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-28 14:43 +0100
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-25 21:47 +0100
Re: A proposition for a conditional loop. John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-26 10:49 +0100
Re: A proposition for a conditional loop. "R.Wieser" <address@not.available> - 2019-09-25 17:07 +0200
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