tmp/tmpsokohkg1/{from.md → to.md}
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### `execution::transform_env` <a id="exec.snd.transform.env">[[exec.snd.transform.env]]</a>
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``` cpp
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namespace std::execution {
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template<class Domain, sender Sndr, queryable Env>
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constexpr queryable decltype(auto) transform_env(Domain dom, Sndr&& sndr, Env&& env) noexcept;
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}
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```
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Let `e` be the expression
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``` cpp
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dom.transform_env(std::forward<Sndr>(sndr), std::forward<Env>(env))
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```
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if that expression is well-formed; otherwise,
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``` cpp
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default_domain().transform_env(std::forward<Sndr>(sndr), std::forward<Env>(env))
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```
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*Mandates:* `noexcept(e)` is `true`.
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*Returns:* `e`.
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