Difference between revisions of "Io.open"
From GiderosMobile
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__NOTOC__ | __NOTOC__ | ||
'''<translate>Available since</translate>:''' Gideros 2011.6<br/> | '''<translate>Available since</translate>:''' Gideros 2011.6<br/> | ||
| + | '''<translate>Class</translate>:''' [[Special:MyLanguage/io|io]]<br/> | ||
=== <translate>Description</translate> === | === <translate>Description</translate> === | ||
<translate>This function opens a file, in the mode specified in the string mode. It returns a new file handle, or, in case of errors, nil plus an error message. | <translate>This function opens a file, in the mode specified in the string mode. It returns a new file handle, or, in case of errors, nil plus an error message. | ||
Revision as of 09:27, 24 August 2018
Available since: Gideros 2011.6
Class: io
Description
This function opens a file, in the mode specified in the string mode. It returns a new file handle, or, in case of errors, nil plus an error message.
The mode string can be any of the following:
"r": read mode (the default); "w": write mode; "a": append mode; "r+": update mode, all previous data is preserved; "w+": update mode, all previous data is erased; "a+": append update mode, previous data is preserved, writing is only allowed at the end of file.
The mode string can also have a 'b' at the end, which is needed in some systems to open the file in binary mode. This string is exactly what is used in the standard C function fopen.
(file) = io.open(filename,mode)
Parameters
filename: (string) filename to open
mode: (string) mode in which to open the file optional
Return values
Returns (file) file object
