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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Startup options and Julia scripts
Without any options, the julia command starts up the REPL environment. A useful option to check your environment is julia –v. This shows Julia's version, for example, julia-version 0.3.2+2. (The versioninfo()function in REPL is more detailed, the VERSION constant gives you only the version number: v"0.3.2+2"). An option that lets you evaluate expressions on the command line itself is –e, for example:
julia -e 'a = 6 * 7; println(a)'
The preceding commands print out 42 (on Windows, use " instead of the ' character).
Some other options useful for parallel processing will be discussed in Chapter 9, Running External Programs. Type julia –h for a list of all options.
A script.jl file with Julia source code can be started ...
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