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newLISP Fan Club

Forum => newLISP in the real world => Topic started by: tomtoo on August 03, 2013, 07:01:52 AM

Title: is this a bug?
Post by: tomtoo on August 03, 2013, 07:01:52 AM
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> (set 'a "0821")
"0821"
> (int a)
0


shouldn't this return 0821?


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> (integer? 0821)
true
Title: Re: is this a bug?
Post by: cormullion on August 03, 2013, 08:24:52 AM
Not really - at least, not in newLISP... You didn't specify a number base, and then you announced an octal number with the initial "0". But then you blew it with the "8", which is not a valid octal digit. Also, you didn't specify a default value in the event of a failed conversion, so you got the default default, which is 0.



Try:


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(int a 0 10)
Title: Re: is this a bug?
Post by: jopython on August 03, 2013, 09:13:00 AM
I will sanitise the input before conversion
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(int (trim "0034234230" "0" ""))
=> 34234230
Title: Re: is this a bug?
Post by: Lutz on August 03, 2013, 12:58:09 PM
also consider speed:


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> (time (int "0821" 0 10) 1000000)
95.273
> (time (int (trim "0821" "0" "")) 1000000)
530.1
>
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