RosettaCodeData/Task/Call-an-object-method/Quackery/call-an-object-method.quackery

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( ---------------- zen object orientation -------------- )
[ immovable
]this[ swap do ]done[ ] is object ( --> )
[ ]'[ ] is method ( --> [ )
[ method
[ dup share
swap put ] ] is localise ( --> [ )
[ method [ release ] ] is delocalise ( --> [ )
( -------------- example: counter methods -------------- )
( to create a counter object, use:
"[ object 0 ] is 'name' ( [ --> )" )
[ method
[ 0 swap replace ] ] is reset-counter ( --> [ )
[ method
[ 1 swap tally ] ] is increment-counter ( --> [ )
[ method [ share ] ] is report-counter ( --> [ )
( -------------------- demonstration ------------------- )
say 'Creating counter object: "mycounter".' cr cr
[ object 0 ] is mycounter ( [ --> )
say "Initial value of mycounter: "
report-counter mycounter echo cr cr
say "Incrementing mycounter three times." cr
3 times [ increment-counter mycounter ]
say "Current value of mycounter: "
report-counter mycounter echo cr cr
say "Localising mycounter." cr cr
localise mycounter
say " Current value of mycounter: "
report-counter mycounter echo cr cr
say " Resetting mycounter." cr
reset-counter mycounter
say " Current value of mycounter: "
report-counter mycounter echo cr cr
say " Incrementing mycounter six times." cr
6 times [ increment-counter mycounter ]
say " Current value of mycounter: "
report-counter mycounter echo cr cr
say "Delocalising mycounter." cr cr
delocalise mycounter
say "Current value of mycounter: "
report-counter mycounter echo cr cr
say "Resetting mycounter." cr
reset-counter mycounter
say "Current value of mycounter: "
report-counter mycounter echo cr cr