Re: [julia-users] Re: metaprogramming update variable when slider changes

Instead of a length-one array you can use `Ref` to hold a reference to an object. If you have multiple variables, then using a dictionary to hold the values with either strings or symbols as keys might be the easiest approach. -erik On Sun, Mar 27, 2016 at 1:13 PM, Fabian Gans

Re: [julia-users] Re: metaprogramming update variable when slider changes

However, be aware that this only works in global scope: function f() z=2.0 change_variable(:z) println(z) end f() will print 2. If this is a problem, you might wrap your variable in an array of size 1. x=[2.0] change_variable(x)=x[1]=3 On Saturday,

Re: [julia-users] Re: metaprogramming update variable when slider changes

Hey Stefan, I figured it out. I had to do something along these lines: x = 2.0 function change_variable(z) eval(:($z = 3.0)) end change_variable(:x) On Friday, March 25, 2016 at 12:00:50 PM UTC-7, Stefan Karpinski wrote: > > You may want to check out Interact.jl: >

Re: [julia-users] Re: metaprogramming update variable when slider changes

But I want to code in atom and render the chart with PyPlot, not jupyter notebook. Also, I would just like to know how to do this. On Friday, March 25, 2016 at 12:00:50 PM UTC-7, Stefan Karpinski wrote: > > You may want to check out Interact.jl: > https://github.com/JuliaLang/Interact.jl > >

Re: [julia-users] Re: metaprogramming update variable when slider changes

You may want to check out Interact.jl: https://github.com/JuliaLang/Interact.jl On Fri, Mar 25, 2016 at 1:59 PM, Lewis Lehe wrote: > Err that is > > slider[:on_changed]( >#WHERE I WANT THE MACRO TO GO >variable = slider.val > ) > > > > On Friday, March 25, 2016 at

[julia-users] Re: metaprogramming update variable when slider changes

Err that is slider[:on_changed]( #WHERE I WANT THE MACRO TO GO variable = slider.val ) On Friday, March 25, 2016 at 10:57:34 AM UTC-7, Lewis Lehe wrote: > > Hi, > I am learning about metaprogramming and macros. I have a very basic case > but am unsure about what Julia is capable of.