I think what you need is something like code checker. You can check the 
package Lint.jl. This is an on-going work, so is not perfect yet.



On Wednesday, September 16, 2015 at 7:33:52 AM UTC+2, ivo welch wrote:
>
>
> Julia is only at version 0.4 (well, soon).  It's too soon to expect 
> miracles.  :-).  however, I want to restate an old suggestion.  a language 
> should have as few surprises as possible.  this applies not only to 
> features, but also to performance.
>
> http://julia.readthedocs.org/en/latest/manual/performance-tips/ contains 
> many gotchas.
>
> the language interpreter should eventually help non-julian experts with 
> the gotchas.  that is, the knowledge in the page on julia performance 
> optimization should be in the compiler---even if just as a jit warning. 
>  for example, global variables: julia could give a warning when it guesses 
> that the global variable could be rolled into a local function or that the 
> global variable looks like it may be constant.  from what I see, similar 
> arguments can be made for abstract containers and others.  (maybe a 
> language pragma would be helpful---unless turned off, help the novice!)
>
> common gotcha's come up again and again for a reason.  this is why they 
> are on this julia page  to begin with.  my guess is that checking for 
> gotchas will probably mess up beautiful internal julia compiler-language 
> code (in tryomg to determine whether the julia user code likely has 
> gotchas), but we all hope that julia user code will be a lot more common 
> than julia compiler-language code.
>
> suggestion for julia version 1.4, perhaps.
>
> regards, /iaw
>
> PS:  (R drove me nuts [=cost me days and days] to understand gotchas.  for 
> example, I learned the hard way that changing one element in a data frame 
> creates complete copies, and thus slowed down my program by a factor of 100 
> when large data frame were involved?  I wasted the time of a lot of good 
> people on the R mailing lists.  how should I have suspected this?  even if 
> I had read the docs end to end, I would not have remembered them a few 
> weeks later.  or, why is read.csv() in R not.data.frame(data.table:fread) ? 
>  do I really want my users to have to learn this the hard way, given how 
> common it is?)
>
>

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