POP

The Pop chip is used to remove the top item from the stack, whether it’s a number or a Thing. This operation discards the top item, helping to manage the stack and keep it organized.

Specifications #

• Argument: Direction stack, Number stack, Thing stack
• Creates a True or False Branch?: No, Pop does not create a T/F branch
• Number of Cycles Used: 1
• Range: 0
• Fuel: 1

Why the Pop Chip Matters #

• Stack Management: Essential for managing the stack by removing items that are no longer needed, which helps to keep the stack clean and orderly.
• Control Flow: Useful in programs where you need to process or discard items in a stack-based manner, especially when working with Things or numerical values.
• Cleanup: Ensures that only relevant items remain on the stack, allowing for efficient and effective program execution.

How to Use the Pop Chip #

• Place the Pop chip in your program where you want to remove the top item from the stack.
• When the ChipWit executes the Pop chip, it will discard the top item, whether it’s a number, direction or a Thing.

Example of Use #

• Imagine you are managing a stack of Things where you have pushed several items onto the stack: a Pie, a Coffee, and a Memory Card.
• You use the Pop chip in your program.
• When the ChipWit executes the Pop chip, it will remove the Coffee (the top item) from the stack.
• After using Pop, the stack will now have a Pie and a Coffee, with the Coffee becoming the new top item.

The Pop chip is crucial for managing and manipulating the stack by removing items that have been processed or are no longer needed, ensuring your ChipWit can efficiently handle its tasks and interactions.

History #

“Pop” as it appears in various historic incarnations of ChipWits!



COMMORDORE 64:


MANUAL:
“An argument can be removed or “popped’ from any Stack using the Pop Operator. Only the top argument is discarded, and the remaining arguments in the Stack, if any, move “up” one position.”

APPLE II:


MANUAL:
“POP removes the top item from the specified stack. The Arguments for POP are the Number, Thing, and Move Stacks. They represent the stack you want the item removed
from.”

MAC:


MANUAL:
“POP removes the item from the top of the specified stack. The Arguments for I’OP arc the Number, Thing, and Move Stacks. They represent the stack you want the item removed
from.”



CHIPWITS II (WIN 98):