34 lines
1.3 KiB
Markdown
34 lines
1.3 KiB
Markdown
[exec.snd.transform.env]
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# 33 Execution control library [[exec]](./#exec)
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## 33.9 Senders [[exec.snd]](exec.snd#transform.env)
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### 33.9.7 execution::transform_env [exec.snd.transform.env]
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[ð](#lib:transform_env)
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`namespace std::execution {
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template<class Domain, [sender](exec.snd.concepts#concept:sender "33.9.3 Sender concepts [exec.snd.concepts]") Sndr, [queryable](exec.queryable.concept#concept:queryable "33.2.2 queryable concept [exec.queryable.concept]") Env>
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constexpr [queryable](exec.queryable.concept#concept:queryable "33.2.2 queryable concept [exec.queryable.concept]") decltype(auto) transform_env(Domain dom, Sndr&& sndr, Env&& env) noexcept;
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}
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/exec.tex#L2570)
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Let e be the expressiondom.transform_env(std::forward<Sndr>(sndr), std::forward<Env>(env)) if that expression is well-formed; otherwise,default_domain().transform_env(std::forward<Sndr>(sndr), std::forward<Env>(env))
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/exec.tex#L2580)
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*Mandates*: noexcept(e) is true[.](#2.sentence-1)
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/exec.tex#L2584)
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*Returns*: e[.](#3.sentence-1)
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