73 lines
7.3 KiB
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73 lines
7.3 KiB
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<title>Macros - Boost.Outcome documentation</title>
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<div class="titlepage"><div><div><h1 style="clear: both">Macros</h1></div></div></div>
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<ol class="children children-li"><li>
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<a href="../reference/macros/template.html" >Constrained template macros</a><li>
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<a href="../reference/macros/version.html" >Version macros</a><li>
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<a href="../reference/macros/co_try.html" ><code>BOOST_OUTCOME_CO_TRY(var, expr)</code></a>
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<p>Evaluate within a coroutine an expression which results in an understood type, assigning <code>T</code> to a variable called <code>var</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/co_tryv.html" ><code>BOOST_OUTCOME_CO_TRYV(expr)/BOOST_OUTCOME_CO_TRY(expr)</code></a>
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<p>Evaluate from within a coroutine an expression which results in an understood type, continuing execution if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/co_tryv_failure_likely.html" ><code>BOOST_OUTCOME_CO_TRYV_FAILURE_LIKELY(expr)/BOOST_OUTCOME_CO_TRY_FAILURE_LIKELY(expr)</code></a>
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<p>Evaluate from within a coroutine an expression which results in an understood type, continuing execution if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/co_tryx.html" ><code>BOOST_OUTCOME_CO_TRYX(expr)</code></a>
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<p>Evaluate from within a coroutine an expression which results in an understood type, emitting the <code>T</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/co_tryx_failure_likely.html" ><code>BOOST_OUTCOME_CO_TRYX_FAILURE_LIKELY(expr)</code></a>
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<p>Evaluate from within a coroutine an expression which results in an understood type, emitting the <code>T</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/co_try_failure_likely.html" ><code>BOOST_OUTCOME_CO_TRY_FAILURE_LIKELY(var, expr)</code></a>
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<p>Evaluate within a coroutine an expression which results in an understood type, assigning <code>T</code> to a variable called <code>var</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/disable_execinfo.html" ><code>BOOST_OUTCOME_DISABLE_EXECINFO</code></a>
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<p>If defined, disables the use of the <code><execinfo.h></code> header (or the win32 emulation).</p><li>
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<a href="../reference/macros/nodiscard.html" ><code>BOOST_OUTCOME_NODISCARD</code></a>
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<p>How to tell the compiler than the return value of a function should not be discarded without examining it.</p><li>
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<a href="../reference/macros/requires.html" ><code>BOOST_OUTCOME_REQUIRES(...)</code></a>
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<p>A C++ 20 <code>requires(...)</code>, if available.</p><li>
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<a href="../reference/macros/symbol_visible.html" ><code>BOOST_OUTCOME_SYMBOL_VISIBLE</code></a>
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<p>How to mark throwable types as always having default ELF symbol visibility.</p><li>
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<a href="../reference/macros/thread_local.html" ><code>BOOST_OUTCOME_THREAD_LOCAL</code></a>
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<p>How to mark variables as having thread local storage duration.</p><li>
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<a href="../reference/macros/throw_exception.html" ><code>BOOST_OUTCOME_THROW_EXCEPTION(expr)</code></a>
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<p>How to throw a C++ exception, or equivalent thereof.</p><li>
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<a href="../reference/macros/try.html" ><code>BOOST_OUTCOME_TRY(var, expr)</code></a>
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<p>Evaluate an expression which results in an understood type, assigning <code>T</code> to a variable called <code>var</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/tryv.html" ><code>BOOST_OUTCOME_TRYV(expr)/BOOST_OUTCOME_TRY(expr)</code></a>
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<p>Evaluate an expression which results in an understood type, continuing execution if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/tryv_failure_likely.html" ><code>BOOST_OUTCOME_TRYV_FAILURE_LIKELY(expr)/BOOST_OUTCOME_TRY_FAILURE_LIKELY(expr)</code></a>
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<p>Evaluate an expression which results in an understood type, continuing execution if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/tryx.html" ><code>BOOST_OUTCOME_TRYX(expr)</code></a>
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<p>Evaluate an expression which results in an understood type, emitting the <code>T</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/tryx_failure_likely.html" ><code>BOOST_OUTCOME_TRYX_FAILURE_LIKELY(expr)</code></a>
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<p>Evaluate an expression which results in an understood type, emitting the <code>T</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/try_failure_likely.html" ><code>BOOST_OUTCOME_TRY_FAILURE_LIKELY(var, expr)</code></a>
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<p>Evaluate an expression which results in an understood type, assigning <code>T</code> to a variable called <code>var</code> if successful, immediately returning <code>try_operation_return_as(X)</code> from the calling function if unsuccessful.</p><li>
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<a href="../reference/macros/in_place_type.html" ><code>BOOST_OUTCOME_USE_STD_IN_PLACE_TYPE</code></a>
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<p>How to implement <code>in_place_type_t<T></code> and <code>in_place_type<T></code>.</p><li>
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<a href="../reference/macros/is_nothrow_swappable.html" ><code>BOOST_OUTCOME_USE_STD_IS_NOTHROW_SWAPPABLE</code></a>
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<p>How to implement <code>is_nothrow_swappable<T></code>.</p></li></ol>
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</div><p><small>Last revised: December 10, 2018 at 20:32:00 UTC</small></p>
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