June 2018 Update

Task/Associative-array-Creation/Julia/associative-array-creation.julia

@@ -1,27 +1,26 @@
-julia> hash = {'a' => 97, 'b' => 98}                  # list keys/values
-{'a'=>97,'b'=>98}
+dict = Dict('a' => 97, 'b' => 98) # list keys/values
+# Dict{Char,Int64} with 2 entries:
+#   'b' => 98
+#   'a' => 97
 
-julia> hash = {c => int(c) for c = 'a':'d'}           # dict comprehension
-{'a'=>97,'c'=>99,'b'=>98,'d'=>100}
+dict = Dict(c => Int(c) for c = 'a':'d') # dict comprehension
+# Dict{Char,Int64} with 4 entries:
+#   'b' => 98
+#   'a' => 97
+#   'd' => 100
+#   'c' => 99
 
-julia> hash['é'] = 233 ; hash                         # add an element
-{'a'=>97,'c'=>99,'b'=>98,'é'=>233,'d'=>100}
+dict['é'] = 233; dict # add an element
+# Dict{Char,Int64} with 3 entries:
+#   'b' => 98
+#   'a' => 97
+#   'é' => 233
 
-julia> hash = Dict()                                  # create an empty dict
-Dict{Any,Any}()
+emptydict = Dict() # create an empty dict
+# Dict{Any,Any} with 0 entries
 
-julia> for c = 'a':'d' hash[c] = int(c) end ; hash    # fill it
-{'a'=>97,'c'=>99,'b'=>98,'d'=>100}
+dict["a"] = 1 # type mismatch
+# ERROR: MethodError: Cannot `convert` an object of type String to an object of type Char
 
-julia> hash = (Char=>Int64)['a' => 97, 'b' => 98]     # create a typed dict
-['a'=>97,'b'=>98]
-
-julia> hash["a"] = 1                                  # type mismatch
-ERROR: no method convert(Type{Char}, ASCIIString)
- in setindex! at dict.jl:533
-
-julia> hash = Dict(['a','b','c'], [97,98,99])         # constructor
-['a'=>97,'c'=>99,'b'=>98]
-
-julia> typeof(hash)                                   # type is infered correctly
-Dict{Char,Int64} (constructor with 3 methods
+typeof(dict) # type is infered correctly
+# Dict{Char,Int64}