substring
substring ( source : string , firstChar : integer , numChars : integer ) : string
| Parameter | Type | Description | |
|---|---|---|---|
| source | string | -> | String from which to get substring |
| firstChar | integer | -> | Position of first character |
| numChars | integer | -> | Number of characters to get |
| Result | string | <- | Substring of source |
Description
The substring command returns the portion of source defined by firstChar and numChars.
The firstChar parameter points to the first character in the string to return, and numChars specifies how many characters to return.
If firstChar plus numChars is greater than the number of characters in the string, or if numChars is not specified, substring returns the last character(s) in the string, starting with the character specified by firstChar. If firstChar is greater than the number of characters in the string, substring returns an empty string ("").
When you use this command in a multi-style context, you need to convert any Window end-of-line characters ('\r\n') into single ('\r') characters in order for processing to be valid. This is due to the mechanism which normalizes Qodly line endings to ensure multi-platform compatibility for texts.
Example
var vsResult : string
vsResult = substring("08/04/62",4,2) // "04"
vsResult = substring("Emergency",1,6) // "Emerge"
vsResult = substring(var,2) // all characters except the first