JFormMap

creates new container object. returns container's identifier (unique integer number).

Returns the value associated with the @key. If not, returns @default value

Inserts @key: @value pair. Replaces existing pair with the same @key

Returns true, if the container has @key: value pair

Returns type of the value associated with the @key.
0 - no value, 1 - none, 2 - int, 3 - float, 4 - form, 5 - object, 6 - string

Returns a new array containing all keys

Returns a new array containing all values

Removes the pair from the container where the key equals to the @key

Returns count of pairs in the conainer

Removes all pairs from the container

Inserts key-value pairs from the source container

Retrieves N-th key. negative index accesses items from the end of container counting backwards.
Worst complexity is O(n/2)