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Comment by kescobo | Hacker News Reader

Depending on which plotting package you use. Plots.jl itself is pretty slow to get started still, though there are ideas on how to improve that.

That said, once you're up and running, plots (and everything else) are super snappy. When I'm doing plotting stuff, I'm usually doing it interactively, and when I'm scripting it, it's because I'm plotting hundreds or thousands of things (and then the startup time is vanishingly small).

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I first thought the whos() issue was some JIT thing... but no, after multiple runs it was still taking 10s of seconds.

For context, I come from using MATLAB interactively. When doing that kind of work, the MATLAB 'whos' command is like /bin/ls, it's hard to do much without it.

Is there a different command in julia for showing all numerical arrays/matrices/tensors in memory and their dimensions from the repl? whos() seems like another direct analog of MATLAB, but maybe there's something better that isn't unreasonably slow?

I'm a little late to the party, but I think something like this should do the trick:

  [names(Main) typeof.(eval.(names(Main)))]

runs crying back to MATLAB

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