Introduction to the File-Box
Programming with the File-Box takes place in an internal editor, which resembles the OMLoop editor. Like OMLoop, File-Box can only be evaluated from outside the editor, in its container patch.
Iterations : OMLoop
StreamFile : a Pointer to Read and Write Files in File-Box
This editor has one main additional feature : the ** StreamFile ** ** box.
Features
StreamFile is an indispensable element for the File-Box : it is required to read from a file, or write to a file.
The StreamFile box represents a file pointer , that is :
- an access to a file on the computer drive
- a position in the file .
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Use
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Several StreamFile boxes can be used in a File-Box, if several files must be read or written at the same time.
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A StreamFile box is added by default in the File-Box editor.
To add another StreamFile box, click on the icon in the upper right corner of the window.
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Reading and Writing Files in File-Box : Functions of the “Files” Package
A number of functions of the package are used for writing or reading files in the Text-Box.
Access
To access these functions, go to Functions / Kernel / Files.
Features
The file-write function writes something (its input) in a file.
The file-read-line function reads one line in a file.
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The file-write-line function writes a line (that is, its input and a line break) a file.
The file-eof-p function tells if the end of file has been reached.
Using Connate Functions
Inito
The Initdo module performs an action before the iteration starts. It is a useful tool to read or write file headers.
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Using Initdo in Iterative Processes
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