&IS-HEX

Examines an argument and returns 1 if the argument contains valid hexadecimal characters: 0-9, A-F, or a-f; otherwise, returns 0.

Restriction: This topic applies only when the AppMaster Builder AddPack has been installed, and applies only to Windows platforms.

Syntax:

&IS-HEX (&variablename)

Aliases:

&is-hex (&variablename)     &Is-Hex (&variablename)
&ishex (&variablename)      &IsHex (&variablename)
&ISHEX (&variablename)

Comment:

If &variablename is a numeric type argument, MFG converts it into a text string. A negative number--because it has a minus sign--is not considered a hex string.

Examples:

&IS-HEX ("01234567890")   = 1
&IS-HEX ("ABCDEF")        = 1
&IS-HEX ("abcdef")        = 1
&IS-HEX ("+ABC")          = 0
&IS-HEX ("-123")          = 0
&IS-HEX ("A ")            = 0
&IS-HEX ("Af")            = 1
&IS-HEX ("AG")            = 0
&IS-HEX ("")              = 0