Problem with IsNumber

[xdp22]

Hello users, i have problem with function IsNumber.

This function work good if i use it like this :

$result = IsNumber( 42 )
MsgBox( 0, "", $result)

This return 1 ( working)

But if i need use changer [ IsNumber( $changer ) ]

This don't work, always return 0, even it's numeric, $changer working good cuz i test it like that :

$changer = FileReadLine( "test.txt", 1)
MsgBox( 0, "", $changer)
$result = IsNumber( $changer )
MsgBox( 0, "", $result)

Please help thanks

[guinness]

$result = StringIsDigit($changer)

I used the wrong Command.

Edited January 21, 2011 by guinness

[xdp22]

I don't know why that's return for normal text = 1 ( numeric ) too :/

[guinness]

Whoops! StringIsDigit()

All I did was look in the Help File under String Management

Edited January 21, 2011 by guinness

[xdp22]

Yeaaaa that working !

THANKS YOU MAN !

[ZacUSNYR]

The reason is FileReadLine returns a 'String'.

$changer = 123

$result = IsNumber( $changer )
MsgBox( 0, "Number", $changer & " response : " & $result)

$result = IsString( $changer )
MsgBox( 0, "String", $changer & " response : " & $result)


$changer = "123"
$result = IsNumber( $changer )
MsgBox( 0, "Number", $changer & " response : " & $result)

$result = IsString( $changer )
MsgBox( 0, "String", $changer & " response : " & $result)


$result = StringIsDigit("123")
$result = IsNumber( $changer )
MsgBox( 0, "Number", $changer & " response : " & $result)

$result = IsString( $changer )
MsgBox( 0, "String", $changer & " response : " & $result)

[iamtheky]

I believe I went about it the long way, seeing as how there is a built in.

$changer = FileReadLine( "c:\test1.txt", 2)


If StringRegExp ($changer , '(\D)') Then
    msgbox (0, '' , 'not a number')
    Else
$result = Number($changer)
MsgBox( 0, "", $result)
Endif

[ResNullius]

I believe I went about it the long way, seeing as how there is a built in.

$changer = FileReadLine( "c:\test1.txt", 2)


If StringRegExp ($changer , '(\D)') Then
    msgbox (0, '' , 'not a number')
    Else
$result = Number($changer)
MsgBox( 0, "", $result)
Endif

This code fails because if $changer = "A1" or "2B", etc it will tell you it's a number and it's not...

ZacUSNYR had the correct reason: FileReadLine returns a string. StringIsDigit() is the correct test.

[iamtheky]

I added both of those to a text file (with and without quotes, just to be sure) and my code returned "not a number"

I would like to know if its flawed, it just did not seem so with those examples.

Edited January 22, 2011 by iamtheky

[jaberwacky]

Am I dumb if I never knew about StringIsDigit()? Or am I old enough to know better?

[guinness]

Its one of those Functions you overlook, for example do you know about GUISwitch()? I didn't until 2months ago

[jaberwacky]

I actually think I ran across it once but still haven't had a need to use it yet.

[guinness]

Check out _DisplayPassword() and you will see that this is the ONLY! time I have had to use it in all my Functions.