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substringbyteLength(string, startPosition, endPosition) Returns a portion of the supplied string between specified character positionsencoding) Return the length in bytes of a string, optionally using a given encoding. |
Function:
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byteLength()
Returns a portion of the supplied string between specified character positionsReturn the length in bytes of a string, optionally using a given encoding.
Syntax
substringbyteLength(string, startPosition, endPositionencoding)
| Argument | Type | Description | |||
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| string | String | The string to be processed. | |||
| startPositionencoding | IntegerString | The character position to start the substring from. | endPosition | Integer | The character position to end the substring at. If not specified, the substring will default to the end of the string.encoding to use. |
Examples
substring("01223236023",6,9byteLength('ab\u1e09', 'UTF-8')
Returns 5 (the portion length of the string between character positions 6 and 9: "2360"in bytes when using the UTF-8 encoding).
substring("01223236023",6)Returns the portion of the string between character position 6 and the end of the string: "236023".
substring(in.fileName, indexOf(in.fileName, "_")+1, indexOf(in.fileName, "_")+9)Suppose in.fileName contained file names with the format "switchRC48_20060708.exp" and we wish to retrieve the date from the file name.
The first, string portion of the file name is variable so we search for the "_" character with the function indexOf, and use the returned value in substring to pull out the date from the file name.
See Also
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This expression also returns 5, as the default encoding is UTF-8.