November 2016
Intermediate to advanced
697 pages
14h 44m
English
Content preview from Julia: High Performance ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Executing commands
We saw in the first chapter that it is possible to shell out of the console REPL to the operating system by using the ; command. In addition, Julia provides a number of built-in functions so that scripts can interactive with the OS and its filesystem. Most of these commands mirror the standard Unix commands. For Windows users, they will be familiar to those who have used the MINGW or similar shells.
Two familiar ones are pwd() and cd():
julia> pwd(); "/Users/malcolm/Packt/Chapter-4" julia> cd("../../Work"); julia> pwd(); "/Users/malcolm/Work"
The pwd() command indicates where we are now (print working folder), and of course, cd() is used to change the folder. This can be relative to the current location or an absolute if the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.