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FileTools

  

IsOpen

  

query if a filename or description is open

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

IsOpen(file)

Parameters

file

-

filename or descriptor

Description

• 

The IsOpen(file) command searches the internal file table to determine if file refers to an open file.

Examples

FileTools[Text][Open]testFile:

FileTools[IsOpen]testFile

true

(1)

FileTools[Remove]testFile:

FileTools[IsOpen]testFile

false

(2)

See Also

file_types

FileTools

FileTools[Binary][Close]

FileTools[Binary][Open]

FileTools[Remove]

FileTools[Text][Close]

FileTools[Text][Open]

IO_errors

 


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