julia beginner 2

immutable

kendi değişken sınıfımızı yazmamızı sağlar

julia> immutabe starfish
               num_of_legs::Int
          end
julia> s=starfish(6)
starfish(6)
julia> names(s)
:num_of_legs
julia> s.num_of_legs
6

Type Tanımlamada Miraslama

julia> abstract Cat
julia> type Lion<:Cat
          roar::String
           color

         end
julia> type Tiger<:Cat
          has_stripes::Bool
          roar::String
       end
julia> subtypes(Cat)
 2-element Array{Any,1}:
Lion
Tiger

Fonksiyonlarda Type

julia> type Koala

            sound::String

           end

julia> function GurultuYap(k::Koala)

           k.sound

           end

GurultuYap (generic function with 1 method)

julia> function GurultuYap(l::Lion)

         l.roar

       end

GurultuYap (generic function with 2 methods)

julia> function GurultuYap(t::Tiger)

         t.roar

       end

GurultuYap (generic function with 3 methods)

julia> l=Lion("RAWRRR","green")

julia> t=Tiger(true, "Ben Tigerım")

julia> k=Koala("hımmmmm")

@which

fonksiyonun açıklamasını verir

julia> function fight(k::Koala, c::Cat)

       println("coala ve cat")

       end

fight (generic function with 1 method)

julia> k=Koala("hımmmmm" )

julia> c=HouseCat("aaa")

julia> @which fight(k,c)

fight(k::Koala, c::Cat) at none:2

@elapsed, @time,@show

Makro

julia> macro foo(e)

       quote

         println("hello")

         $e

         println("world")

       end

       end

Sleep

julia>sleep(1)

julia> median([@elapsed sleep(1) for x=1:10])

1.0020625845

julia> macro bench(f)
       quote
       median([@elapsed $f for x=1:10])
       end
       end

julia> @bench sleep(0.5)

0.501552907

makro içinde fonksiyon çağırma

julia> macro bench2(args...)

        bench2(args...)

       end

julia> function bench2(e)

       quote

       median([@elapsed sleep(1) for x=1:10])

       end

       end

bench2 (generic function with 1 method)

julia> @bench2 sleep(0.1)

1.002052691