Juno Demo

juno_demo.jl

# Juno

# http://junolab.org/
# http://docs.junolab.org/latest/man/installation.html

## Inline Evaluation
1+1
println(2+2)

rand(3)
structure(:(f(x,y)))
# important: Evaluation is module-aware (see lower right corner for currently active module)

## Cell Evaluation
println("Cell 1")
x = 1+1
x^2

## Smart backtraces
f(x, y) = g(x, y)
g(x, y) = x//y
f(0, 0)

## (Reasonably) smart autocompletions (IntelliSense-like)
"""
method 1
"""
foo(x::Int) = x
"""
method 2
"""
foo(x::Int, y::Float64) = x*y

foo() # return type, method completions etc:
show()
## Documentation, Go To Definition
show # Ctrl-J Ctrl-D, Ctrl-J Ctrl-G

## Profiling
function myfunc()
    A = rand(200, 200, 400)
    maximum(A)
end
myfunc()
@profiler myfunc()

## Stepping into functions (with https://github.com/JuliaDebug/ASTInterpreter2.jl):
@enter gcd(2, 3)

## Performance linting with Traceur.jl (https://github.com/JunoLab/Traceur.jl)
function naive_sum(xs)
    s = 0.0
    for x in xs
        s += x
    end
    return s
end

Atom.@trace naive_sum(rand(3))

## Integrated Plot Pane
using Plots
plot(rand(300))

# Other goodies:
# - Completly functiousing Atom; using Juno; Juno.connect(43239)nal REPL
# - Can open arbitrary terminals in Juno (with search)
# - Remote Connection built in
# - Loads of settings for customization
# - REPLTreeViews.jl
# - Weave integration

## Questions?

# Why not LSP-backed?
# Multi-Monitor setups?
# Autoformatter/code beautifier?

using JSON
json"{a:1}"