[ADD] dictionaries

06_Dictionaries.jl

@@ -0,0 +1,62 @@
+println(Dict("one" => 1, "two" => 2))
+
+elements = ["one" => 1, "two" => 2]
+println(Dict(elements))
+
+
+elements = [("one",1),("two",2)]
+println(Dict(elements))
+
+kees = ["one","two"]
+vals = [1,2]
+
+println(Dict(zip(kees,vals)))
+
+d = Dict{String,Int64}()
+d["one"] = 1
+
+println(d)
+
+p = "one" => 1
+println(p)
+
+k, v = p
+println(k)
+println(v)
+
+
+println(fieldnames(p))
+
+println(p.first)
+println(p.second)
+
+d = Dict("one" => 1)
+println(d["one"])
+println(get(d, "three",-1))
+println(get(d, "one",-1))
+
+d = Dict("one"=>1,"two"=>2,"three"=>3)
+println(haskey(d,"four"))
+
+println(values(d))
+println(keys(d))
+
+println(length(d))
+
+delete!(d,"two")
+
+println(d)
+
+d = Dict("one"=>1,"two"=>2,"three"=>3)
+
+for (k,v) in d
+    println("value is $v for key $k")
+end
+
+for v in values(d)
+    println(v)
+end
+
+for k in keys(d)
+    println(k)
+end