Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!raubtier-asyl.eternal-september.org!.POSTED!not-for-mail From: Bonita Montero Newsgroups: comp.lang.c Subject: Re: Top 10 most common hard skills listed on resumes... Date: Wed, 28 Aug 2024 16:55:44 +0200 Organization: A noiseless patient Spider Lines: 22 Message-ID: References: <20240825192810.0000672c@yahoo.com> <20240825220016.00002793@yahoo.com> <86bk1e4y7t.fsf@linuxsc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Wed, 28 Aug 2024 16:55:42 +0200 (CEST) Injection-Info: raubtier-asyl.eternal-september.org; posting-host="533d64590f09fbd7a1b41b803c3065f2"; logging-data="3700710"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/Vuf+VIgxTKbJLVQU70KZa7mK63Qcr0E4=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:rHvBJbFuzXFUgWmJvny8xZ00nVw= Content-Language: de-DE In-Reply-To: Bytes: 2695 Am 28.08.2024 um 15:52 schrieb Thiago Adams: > You have to deallocate only if the ownership still with the > same object. This is not the case when the object is moved. Take this code string str; int main () { string str( "hello" ); ::str = move( str ); } With clang-cl (the MSVC-flavour of clang) the whole string-creation and destruction is opmized away and the compiler directly checks if ::str contains any externally allocated and if not it makes a short -string-optimized "copy" to ::str. That's nine instructions for the whole string copy with clang-cl 17.0.3; no external call.