DKStack and DKQueue example

DKStackAndQueueExample

//Stack - FILO (first in, last out)
DKStack* stack = [[DKStack alloc] init];

[stack push:foo];    //Push foo on the stack
[stack push:bar];    //Push bar on the stack
[stack pop];         //Pop top element (bar) from the stack

[stack top];         //Now returns foo

[stack pop];         //Pop top element (foo) from the stack
[stack isEmpty];     //Now returns YES

//Queue - FIFO (first in, first out)
DKQueue* queue = [[DKQueue alloc] init];

[queue push:foo];    //Push foo to the queue
[queue push:bar];    //Push foo to the queue
[queue pop];         //Pop first element (foo) from the queue

[queue first];       //Now returns bar

[queue pop];         //Pop bar from queue
[queue isEmpty];     //Now returns YES