Is there a native Julia command to write to a particular line of a file? I know how to open a file, namely using open, but it seems like the options are to overwrite the entire file (with the “w” and write commands/options), or write to its end (with the “a” and write commands/options). I haven’t fo…

Delete the first line. The first write is just to create the file test.foo for this demonstration.

Here is one way to do this: julia> function skiplines(io::IO, n) i = 1 while i <= n eof(io) && error("File contains less than $n lines") i += read(io, Char) === '\n' end end skiplines (generic function with 1 method) julia> # writ…

I tried copy-pasting your code into a function, editL. Here it is: function editL(file, string, no) write(file, string); f = open(file, "r+"); skiplines(f, no); skip(f, -1) mark(f) buf = IOBuffer() write(buf, f) seekstart(buf) reset(f) write(f, buf) close…

Write to a particular line in a file

General Usage

fusion809 November 15, 2020, 4:39pm 5

Turns out your code also solves Writing LaTeX from Julia.

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Write to a particular line in a file

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