In computer programming, code space is the memory segment in the main memory allocated to a process to store the code in execution.
In multi-threading environment, threads share code space along with data space, which reduces the overhead of context switching considerably as compared to process switching.
For a character encoding the code space (or codespace) is the range of numerical values available for encoding characters. For example, Unicode has a code space comprising a range of integers from 0hex to 10FFFFhex.[1] Each value in the code space is known as a code point.
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