Writing to specific lines in a File
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Lets say I have a file with 100 lines. I would like to open that file, and insert a line before line X (lets say line 50). Is that possible without loading the whole file into an array with
readlines?Chris
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Good question... never tried it.
You can set the current line via
lineno=(), but I suspect theseIOfile functions (whichFileinherits,) are sequential files, and usingputs()after setting the line, is likely to overwrite that line.Perhaps you may wish to look in the standard Ruby Extended libs for a Random Access File extension ??
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OH !! Chris ... didn't realize this.. there's a
TempFilemanager class in the standard Ruby library.Also there's the
PStoreclass, which is like a file-basedHash.There's also a "massive"
CSVclass. -
Awesome Dan, thanks! I'll go look into those.
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