Groovy: Nested Maps Thursday, May 9, 2013

def map = [:]

map["a"] = ["b":1]

println map["a"]["b"]
println map."a"."b"

// Can't assign using dot notation
//map."a"."b" = 1  // Cannot set property 'b' on null object

map = ["a":["b":["c":1]]]
map."a"."b"."c"

// Nested lists
map = ["a":["b":["c":[1,2,3],"d":[4,5,6] ] ] ]

println map."a"."b"."c"
println map."a"."b"."d"[2] // Calling index of array

// Nested maps
map = ["a":["b":["c":["c1":1,"c2":2],"d":["d1":4,"d2":5] ] ] ]

println map."a"."b"."c"."c2"
println map."a"."b"."d"."d1"