Check if the data is numeric or not: IsNumber() IsInt() not work ?

[Trong]

Eg 1:

Global $exString = '1100'
ConsoleWrite("StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF)
ConsoleWrite("IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF)
ConsoleWrite("IsNumber(" & $exString & ")=" & IsNumber($exString) & @CRLF)
MsgBox(0, "Is Numerical ?","StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF & "IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF & "IsNumber(" & $exString & ")=" & IsNumber($exString))

EG2:

if treat variable as number it works but value is not correct because i am checking input data is numeric or string:

;Global $exString = 'xx1100'
Global $exString = '1100xx'
 $exString = Number($exString)
ConsoleWrite("StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF)
ConsoleWrite("IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF)
ConsoleWrite("IsNumber(" & $exString & ")=" & IsNumber($exString) & @CRLF)
MsgBox(0, "Is Numerical ?","StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF & "IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF & "IsNumber(" & $exString & ")=" & IsNumber($exString))

 

 

 

 

Edited January 17, 2022 by VIP
ss

[Trong]

I found this UDF to be a perfect alternative, but not the intent of my question:

Code quote:

expandcollapse popup

Dim $aNumbers[21]
$aNumbers[1] = 12345
$aNumbers[2] = "-12345"
$aNumbers[3] = +12345.678
$aNumbers[4] = "12345.678"
$aNumbers[5] = "One"
$aNumbers[6] = ""
$aNumbers[7] = "123.One"
$aNumbers[8] = 0xFF1165AB
$aNumbers[9] = "0x0000Ff"
$aNumbers[10] = 0x0000
$aNumbers[11] = "0x0000GG"
$aNumbers[12] = 4.395179e+003
$aNumbers[13] = "4.395179e+003"
$aNumbers[14] = 4.395179e-003
$aNumbers[15] = "4.395179e-003"
$aNumbers[16] = 4e-003
$aNumbers[17] = 4E+003
$aNumbers[18] = "4e-003"
$aNumbers[19] = "4E+003"

For $i = 1 To 20 Step 1
  MsgBox(0,"IsNumeric", '$aNumbers['& $i & '] = ' & $aNumbers[$i] & @CRLF & @CRLF & 'IsNumber() = ' & IsNumber($aNumbers[$i]) & @CRLF & @CRLF & 'IsString() = ' & IsString($aNumbers[$i])  & @CRLF & @CRLF & 'Number() = ' & Number($aNumbers[$i]) & @CRLF & @CRLF & '_IsNumerical() = ' & _IsNumerical($aNumbers[$i]) & @crlf )
Next

; #FUNCTION# ==============================================================
; Name...........: _IsNumerical
; Description ...: Uses a regular expression to check if $vValue can be interpreted as a numeric value
; Syntax.........: _IsNumerical($vValue)
; Parameters ....: $vValue - Value to test if it is numerical
; Return values .: True - If $vValue contains a numeric value
; ...............: False- If $vValue contains a non-numeric value
; Author ........: Bowmore <bowmore at lineone dot net>
; Modified.......:
; Remarks .......: Accepts values in Decimal, Hex and Exponential format. If $vValue is a string then
;                  the whole string must be numeric value for the function to return True
; Related .......: IsNumber, Number
; Link ..........:
; Example .......: Yes
; ===============================================================
Func _IsNumerical($vValue)
  If IsNumber($vValue) Then Return True
  If StringRegExp($vValue, "(^[+-]?[0-9]+\.?[0-9]*$|^0x[0-9A-Fa-f]{1,8}$|^[0-9]+\.?[0-9]*[Ee][+-][0-9]+$)") Then Return True
  Return False
EndFunc

 

Edited January 17, 2022 by VIP

[jchd]

29 minutes ago, VIP said:

if treat variable as number it works but value is not correct because i am checking input data is numeric or string:

Your question isn't clear. When and why do you find "value is not correct".

Which input formats do you want to accept or filter out?

[Trong]

Sorry for the unclear question.
I don't understand what AutoIT's IsNumber function is used for? if the input data type is already numeric then it must be numeric, up I think it has to compare with different data types, specifically here is string.

[junkew]

https://www.autoitscript.com/autoit3/docs/functions/IsNumber.htm its not to convert string to a number.

[Rurorita]

;Global $exString = 'xx1100'
Global $exString = '1100xx'
$exString = Number($exString)

MsgBox(0, "", "Var(" & $exString & ") is : " & VarGetType($exString))

The Number func doesnt convert the given var into a Number datatype but into Int32, Int64 or Double.

https://www.autoitscript.com/autoit3/docs/functions/Number.htm

 

Also check out https://www.autoitscript.com/autoit3/docs/intro/lang_datatypes.htm

Edited January 18, 2022 by Rurorita

[AlessandroAvolio]

IsNumber asks whether the content of the variable is meant to represent a numeric quantity. A string is not meant to represent a number but a series of characters.

IsNumber(variable) ... -> "variable" can be a number, array, string, pointer, boolean.

Edited January 18, 2022 by AlessandroAvolio