unless-file-exists ( ... path quot: ( ... path -- ... ) -- ... )

Vocabulary

io.files

Inputs

path	a pathname string
quot	a quotation with stack effect ( ... path -- ... )

Outputs

None

Word description

If path is a file that does not exist, calls the quot quotation.

Notes

It is possible for the file to be created or deleted after the call to file-exists? but before running quot. If that is a concern, you might want to open the file for reading or writing, as needed.

See also

if-file-exists, when-file-exists

Definition

USING: kernel ;

IN: io.files

: unless-file-exists
    ( ... path quot: ( ... path -- ... ) -- ... )
    [ drop ] swap if-file-exists ; inline