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1 definition found
From The Free On-line Dictionary of Computing (05 January 2017) [foldoc]:
open
1. To prepare to read or write a file. This
usually involves checking whether the file already exists and that
the user has the necessary authorisation to read or write it.
The result of a successful open is usually some kind of
capability (e.g. a Unix file descriptor) - a token that the
user passes back to the system in order to access the file without
further checks and finally to close the file.
2. Abbreviation for "open (or left) parenthesis" -
used when necessary to eliminate oral ambiguity. To read aloud
the LISP form (DEFUN FOO (X) (PLUS X 1)) one might say: "Open
defun foo, open eks close, open, plus eks one, close close."
3. Non-proprietary. An open standard is one which
can be used without payment.
4. open interval.