Summary
This episode examines the differences between pre-increment (++i) and post-increment (i++) operators in C++. Jason explains that these operators have distinct semantics: pre-increment modifies the value and returns the new value, while post-increment returns a copy of the original value before incrementing. The episode demonstrates how to implement both operators for custom types, showing that post-increment requires making a temporary copy of the original value. Through assembly code analysis, Jason shows that while the performance difference is negligible in optimized builds, there is a small overhead with post-increment in debug builds due to the extra copy operation.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[print.fun]100% match -
[format]80% match -
[diff.cpp23]49% match