Addition is a mathematical operation that represents combining collections of objects together into a larger collection


Subtraction is a mathematical operation that represents the removal of an object from a collection.


Quality Example
Assignment lower procedure

"Addition subtraction assignment has lower procedure than simply add operation"

from question "Can't understand x *= y+1 output"


"Addition and subtraction is worse as these have to be done in sequence of two operations and the second operation requires the first to have completed - this is not the case if the compiler is just producing two add operations on independent data"

from question "What is the performance impact of using int64_t instead of int32_t on 32-bit systems?"

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