Summary
Jason Turner compares two methods of emptying a std::string: using the clear() member function versus assigning an empty string literal (string = ""). Through benchmarks and code analysis, he demonstrates that clear() is significantly faster, showing 1.4 to 3.3 times better performance depending on optimization level. Jason examines why by exploring the internal implementations, revealing that clear() simply sets the string length to zero, while the assignment operator must calculate string length and potentially allocate memory.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[diff.cpp14.string]61% match -
[diff.cpp20.strings]58% match -
[diff.cpp03.strings]58% match -
[diff.cpp23.strings]57% match