diff options
Diffstat (limited to 'julia.html.markdown')
| -rw-r--r-- | julia.html.markdown | 74 |
1 files changed, 37 insertions, 37 deletions
diff --git a/julia.html.markdown b/julia.html.markdown index 839e414d..7914f154 100644 --- a/julia.html.markdown +++ b/julia.html.markdown @@ -434,8 +434,8 @@ add(5, 6) # => 11 # Compact assignment of functions -fAdd(x, y) = x + y # => fAdd (generic function with 1 method) -fAdd(3, 4) # => 7 +f_add(x, y) = x + y # => f_add (generic function with 1 method) +f_add(3, 4) # => 7 # Function can also return multiple values as tuple fn(x, y) = x + y, x - y # => fn (generic function with 1 method) @@ -478,56 +478,56 @@ catch e end # You can define functions that take keyword arguments -function keywordArgs(;k1=4, name2="hello") # note the ; +function keyword_args(;k1=4, name2="hello") # note the ; return Dict("k1" => k1, "name2" => name2) end -# => keywordArgs (generic function with 1 method) +# => keyword_args (generic function with 1 method) -keywordArgs(name2="ness") # => ["name2"=>"ness", "k1"=>4] -keywordArgs(k1="mine") # => ["name2"=>"hello", "k1"=>"mine"] -keywordArgs() # => ["name2"=>"hello", "k1"=>4] +keyword_args(name2="ness") # => ["name2"=>"ness", "k1"=>4] +keyword_args(k1="mine") # => ["name2"=>"hello", "k1"=>"mine"] +keyword_args() # => ["name2"=>"hello", "k1"=>4] # You can combine all kinds of arguments in the same function -function allTheArgs(normalArg, optionalPositionalArg=2; keywordArg="foo") +function all_the_args(normalArg, optionalPositionalArg=2; keywordArg="foo") println("normal arg: $normalArg") println("optional arg: $optionalPositionalArg") println("keyword arg: $keywordArg") end -# => allTheArgs (generic function with 2 methods) +# => all_the_args (generic function with 2 methods) -allAheArgs(1, 3, keywordArg=4) +all_the_args(1, 3, keywordArg=4) # => normal arg: 1 # => optional arg: 3 # => keyword arg: 4 # Julia has first class functions -function createAdder(x) +function create_adder(x) adder = function (y) return x + y end return adder end -# => createAdder (generic function with 1 method) +# => create_adder (generic function with 1 method) # This is "stabby lambda syntax" for creating anonymous functions (x -> x > 2)(3) # => true -# This function is identical to createAdder implementation above. -function createAdder(x) +# This function is identical to create_adder implementation above. +function create_adder(x) y -> x + y end -# => createAdder (generic function with 1 method) +# => create_adder (generic function with 1 method) # You can also name the internal function, if you want -function createAdder(x) +function create_adder(x) function adder(y) x + y end adder end -# => createAdder (generic function with 1 method) +# => create_adder (generic function with 1 method) -add10 = createAdder(10) # => (::getfield(Main, Symbol("#adder#11")){Int64}) +add10 = create_adder(10) # => (::getfield(Main, Symbol("#adder#11")){Int64}) # (generic function with 1 method) add10(3) # => 13 @@ -669,14 +669,14 @@ Lion <: Cat # => true Panther <: Cat # => true # Defining a function that takes Cats -function petCat(cat::Cat) +function pet_cat(cat::Cat) println("The cat says $(meow(cat))") end -# => petCat (generic function with 1 method) +# => pet_cat (generic function with 1 method) -petCat(Lion("42")) # => The cat says 42 +pet_cat(Lion("42")) # => The cat says 42 try - petCat(tigger) # => ERROR: MethodError: no method matching petCat(::Tiger) + pet_cat(tigger) # => ERROR: MethodError: no method matching pet_cat(::Tiger) catch e println(e) end @@ -744,14 +744,14 @@ fight(Lion("RAR"), Lion("brown", "rarrr")) # => The lions come to a tie # Under the hood # You can take a look at the llvm and the assembly code generated. -squareArea(l) = l * l # squareArea (generic function with 1 method) +square_area(l) = l * l # square_area (generic function with 1 method) -squareArea(5) # => 25 +square_area(5) # => 25 -# What happens when we feed squareArea an integer? -codeNative(squareArea, (Int32,), syntax = :intel) +# What happens when we feed square_area an integer? +codeNative(square_area, (Int32,), syntax = :intel) # .text - # ; Function squareArea { + # ; Function square_area { # ; Location: REPL[116]:1 # Prologue # push rbp # mov rbp, rsp @@ -765,9 +765,9 @@ codeNative(squareArea, (Int32,), syntax = :intel) # nop dword ptr [rax + rax] # ;} -codeNative(squareArea, (Float32,), syntax = :intel) +codeNative(square_area, (Float32,), syntax = :intel) # .text - # ; Function squareArea { + # ; Function square_area { # ; Location: REPL[116]:1 # push rbp # mov rbp, rsp @@ -780,9 +780,9 @@ codeNative(squareArea, (Float32,), syntax = :intel) # nop word ptr [rax + rax] # ;} -codeNative(squareArea, (Float64,), syntax = :intel) +codeNative(square_area, (Float64,), syntax = :intel) # .text - # ; Function squareArea { + # ; Function square_area { # ; Location: REPL[116]:1 # push rbp # mov rbp, rsp @@ -798,12 +798,12 @@ codeNative(squareArea, (Float64,), syntax = :intel) # Note that julia will use floating point instructions if any of the # arguments are floats. # Let's calculate the area of a circle -circleArea(r) = pi * r * r # circleArea (generic function with 1 method) -circleArea(5) # 78.53981633974483 +circle_area(r) = pi * r * r # circle_area (generic function with 1 method) +circle_area(5) # 78.53981633974483 -codeNative(circleArea, (Int32,), syntax = :intel) +codeNative(circle_area, (Int32,), syntax = :intel) # .text - # ; Function circleArea { + # ; Function circle_area { # ; Location: REPL[121]:1 # push rbp # mov rbp, rsp @@ -832,9 +832,9 @@ codeNative(circleArea, (Int32,), syntax = :intel) # nop dword ptr [rax] # ;} -codeNative(circleArea, (Float64,), syntax = :intel) +codeNative(circle_area, (Float64,), syntax = :intel) # .text - # ; Function circleArea { + # ; Function circle_area { # ; Location: REPL[121]:1 # push rbp # mov rbp, rsp |