test is string is number

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daveplummermd
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Joined: 18 Jul 2006 17:18

test is string is number

Unread post by daveplummermd » 17 May 2018 19:26

Guys

How can I test if a string is a number?

Thanks in advance

Dave
Dave Plummer
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Thomas Linder Puls
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Joined: 28 Feb 2000 0:01

Re: test is string is number

Unread post by Thomas Linder Puls » 17 May 2018 22:11

To test whether the string S is a real:

Code: Select all

R = tryToTerm(real, S)
Regards Thomas Linder Puls
PDC
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CalmoSoft
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Joined: 17 Oct 2006 5:49

Re: test is string is number

Unread post by CalmoSoft » 18 May 2018 5:00

Hello Dave,

May next links help you:
test is string is number #1
test is string is number #2

Greetings,
Gal Zsolt
(~ CalmoSoft ~)
There are two types of programmers :
the one who already uses Ring
or Visual Prolog and the others
who are going to use them some time.
(~ CalmoSoft ~)
calmosoft@gmail.com
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daveplummermd
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Posts: 80
Joined: 18 Jul 2006 17:18

Re: test is string is number

Unread post by daveplummermd » 19 May 2018 12:40

Thanks , but in what class/package can I find trytoTerm?
dp
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Harrison Pratt
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Joined: 5 Nov 2000 0:01

Re: test is string is number

Unread post by Harrison Pratt » 19 May 2018 21:03

It's "built-in" -- see here: https://wiki.visual-prolog.com/index.ph ... #tryToTerm
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