is-charset
Use is-charset to check whether a string conforms to a supported character set.
The character sets currently supported are CHARSET_LATIN1 (ISO-8859-1) and CHARSET_ASCII (ASCII).
Support for additional sets, including those up through ISO 8859-5 supplement, will be added in the future.
Basic syntax
To check whether a string conforms to a specified character set, use the following syntax:
(is-charset charset input)
Arguments
Use the following arguments to specify the character set and input string you want to check using the is-charset Pact function.
| Argument | Type | Description |
|---|---|---|
charset | integer | Specifies the character set to which the input string should conform. Currently supported values are 0 for 'CHARSET_LATIN1' (ISO-8859-1) and 1 for 'CHARSET_ASCII' (ASCII). |
input | string | Specifies the input string to be checked for conformity to the specified character set. |
Return value
The is-charset function returns a boolean value indicating whether the input string conforms to the specified character set.
Examples
The following examples demonstrate the use of is-charset in the Pact REPL:
pact>(is-charset CHARSET_ASCII "hello world")
true
In this example, the input string "hello world" conforms to the ASCII character set.
pact>(is-charset CHARSET_ASCII "I am nÖt ascii")
false
In this example, the input string "I am nÖt ascii" contains characters that are not part of the ASCII character set.
pact>(is-charset CHARSET_LATIN1 "I am nÖt ascii, but I am latin1!")
true
In this example, the input string "I am nÖt ascii, but I am latin1!" conforms to the ISO-8859-1 (Latin-1) character set.