A language designed to communicate instructions to a machine, particularly a computer.

"Computer languages include programming languages like Python and Java, as well as markup languages like HTML."

Emulation refers to the process of imitating the behavior of one computer system or electronic device using another computer system or electronic device. In other words, it's the ability of a system (the emulator) to behave like another system (the emulated system), often for the purpose of running software or applications designed for the emulated system.

"Emulation can be used for various purposes, such as:\n\n1. Running software or games designed for older systems on modern hardware.\n2. Testing software in a simulated environment before deploying it on real hardware.\n3. Developing and debugging software for different platforms.\n4. Preserving and accessing legacy software and systems.\n"

A temporary storage area used to queue data before it is processed or sent to its destination, often used in printing and data transmission.

"The print job was added to the print spooler and would be processed in the order it was received."

A technique used in Objective-C to dynamically change the implementation of a method at runtime, often used for method interception and debugging.

"The developer swizzled a method to log function calls for debugging purposes."

A programming technique used to handle conditions and errors early in a function or block of code, by checking for invalid conditions and returning early.

"Guard clauses help improve readability and reduce the nesting level of code by handling edge cases at the start of functions."