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Re: Convoluted logic trying to do bignumb

Newsgroups comp.lang.javascript
Subject Re: Convoluted logic trying to do bignumb
From "Evertjan." <exxjxw.hannivoort@inter.nl.net>
References (1 earlier) <e266c24c-9194-4e5a-8ba7-4ea3d0be88ef@googlegroups.com> <dde06814-e817-470d-a895-3c1ca7860b94@googlegroups.com> <e62faf71-162b-4d59-8954-756b3c022fb6@googlegroups.com> <XnsA47878EADF64Beejj99@194.109.133.246> <8cd3a812-f346-4af0-97c7-62f02cd2264a@googlegroups.com>
Date 2015-04-10 20:25 +0200
Message-ID <XnsA478CFBC0C88Ceejj99@194.109.133.246> (permalink)

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jonas.thornvall@gmail.com wrote on 10 apr 2015 in comp.lang.javascript:

> Den fredag 10 april 2015 kl. 11:53:14 UTC+2 skrev Evertjan.:
>> jonas.thornvall@gmail.com wrote on 10 apr 2015 in comp.lang.javascript:
>> 
>> > //If A<B returns true otherwise false
>> 
>> returns?? not in the Javascript way.
>> 
>> > function arrCompare(A,B){
>> > if(A.length>B.length)answer="false";
>> > if(A.length==B.length){ if ( A[A.length] > B[B.length]
>> > )answer="false";} 
>> >}
>> 
>> You probably mean: A[A.length-1] > B[B.length-1]
>> 
>> However this wil not work for:
>> 
>> var A = [1,5,3];
>> var B = [1,2,3];
>> 
>> ================================
>> 
>> I would prefer a 3-way return,
>> speed-optimized for [large] inequality:
>> 
>> // If A>B return 1, A=B return 0, A<B return -1
>> 
>> function arrTriCompare(A,B) {
>>   var len = A.length, temp = len - B.length, i;
>>   if (temp)
>>     return Math.sign(temp);
>>   for (i = len-1; i >= 0; i--) 
>>     if (temp = A[i] - B[i]) 
>>       return Math.sign(temp);
>>   return 0;
>> };
>> 
>> 
>> 
[PLEASE don ot quote signatures]

> A more general question the original loop with the boolean true false is
> doing a function call, where the boolean no longer exist unless declared
> global. 

See my above code, 
the result value is the return of the function.

var result = arrTriCompare(A,B);
 
> What i basicly asking how can i reach the boolean in both function
> without making it global variable? 

See my above code, 
the result value is the return of the function.

var result = arrTriCompare(A,B);

> You return 0 i see, but how would the loop look that calls the function
> and break on 0 / false? 

Please analyse my example, 
the break is automagical,
it does this by exiting the function immediately.

-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-09 22:26 -0700
  Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-09 22:44 -0700
    Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-09 22:59 -0700
    Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-09 23:02 -0700
      Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-09 23:16 -0700
        Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-10 01:49 -0700
        Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-10 11:53 +0200
          Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-10 06:33 -0700
            Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-10 20:25 +0200
              Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-10 11:55 -0700
              Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 04:05 -0700
                Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-11 13:13 +0200
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 04:49 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 04:56 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 05:31 -0700
                Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-11 20:22 +0200
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 12:07 -0700
                Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-11 21:32 +0200
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 13:22 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 16:07 -0700
                Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-12 12:06 +0200
                Re: Convoluted logic trying to do bignumb Dr J R Stockton <reply1500@merlyn.demon.co.uk.invalid> - 2015-04-14 22:44 +0100
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-15 02:39 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-15 04:52 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-15 05:09 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-15 05:10 -0700
                Re: Convoluted logic trying to do bignumb Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-15 22:46 +0100
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-16 01:06 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 07:21 -0700
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 08:06 -0700
                Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-11 20:32 +0200
                Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-11 12:10 -0700
          Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-10 06:55 -0700
          Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-10 07:19 -0700
  Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-10 07:26 -0700
  Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-12 07:20 -0700
    Re: Convoluted logic trying to do bignumb "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-12 17:30 +0200
      Re: Convoluted logic trying to do bignumb jonas.thornvall@gmail.com - 2015-04-12 09:03 -0700

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