| ... | ... | @@ -10308,14 +10308,586 @@ fn readU32Be() u32 {} |
| 10308 | 10308 | {#header_close#} |
| 10309 | 10309 | |
| 10310 | 10310 | {#header_open|Keyword Reference#} |
| 10311 | | <p> |
| 10312 | | TODO the rest of the keywords. Most of these can just be links to the relevant section. |
| 10313 | | </p> |
| 10314 | | {#header_open|Keyword: pub#} |
| 10315 | | <p>The {#syntax#}pub{#endsyntax#} in front of a top level declaration makes the |
| 10316 | | declaration available to reference from a different file than the one it is declared in.</p> |
| 10317 | | {#see_also|@import#} |
| 10318 | | {#header_close#} |
| 10311 | <div class="table-wrapper"> |
| 10312 | <table> |
| 10313 | <tr> |
| 10314 | <th> |
| 10315 | Keyword |
| 10316 | </th> |
| 10317 | <th> |
| 10318 | Description |
| 10319 | </th> |
| 10320 | </tr> |
| 10321 | <tr> |
| 10322 | <td> |
| 10323 | <pre>{#syntax#}align{#endsyntax#}</pre> |
| 10324 | </td> |
| 10325 | <td> |
| 10326 | {#syntax#}align{#endsyntax#} can be used to specify the alignment of a pointer. |
| 10327 | It can also be used after a variable or function declaration to specify the alignment of pointers to that variable or function. |
| 10328 | <ul> |
| 10329 | <li>See also {#link|Alignment#}</li> |
| 10330 | </ul> |
| 10331 | </td> |
| 10332 | </tr> |
| 10333 | <tr> |
| 10334 | <td> |
| 10335 | <pre>{#syntax#}allowzero{#endsyntax#}</pre> |
| 10336 | </td> |
| 10337 | <td> |
| 10338 | The pointer attribute {#syntax#}allowzero{#endsyntax#} allows a pointer to have address zero. |
| 10339 | <ul> |
| 10340 | <li>See also {#link|allowzero#}</li> |
| 10341 | </ul> |
| 10342 | </td> |
| 10343 | </tr> |
| 10344 | <tr> |
| 10345 | <td> |
| 10346 | <pre>{#syntax#}and{#endsyntax#}</pre> |
| 10347 | </td> |
| 10348 | <td> |
| 10349 | The boolean operator {#syntax#}and{#endsyntax#}. |
| 10350 | <ul> |
| 10351 | <li>See also {#link|Operators#}</li> |
| 10352 | </ul> |
| 10353 | </td> |
| 10354 | </tr> |
| 10355 | <tr> |
| 10356 | <td> |
| 10357 | <pre>{#syntax#}anyframe{#endsyntax#}</pre> |
| 10358 | </td> |
| 10359 | <td> |
| 10360 | {#syntax#}anyframe{#endsyntax#} can be used as a type for variables which hold pointers to function frames. |
| 10361 | <ul> |
| 10362 | <li>See also {#link|Async Functions#}</li> |
| 10363 | </ul> |
| 10364 | </td> |
| 10365 | </tr> |
| 10366 | <tr> |
| 10367 | <td> |
| 10368 | <pre>{#syntax#}anytype{#endsyntax#}</pre> |
| 10369 | </td> |
| 10370 | <td> |
| 10371 | Function parameters and struct fields can be declared with {#syntax#}anytype{#endsyntax#} in place of the type. |
| 10372 | The type will be inferred where the function is called or the struct is instantiated. |
| 10373 | <ul> |
| 10374 | <li>See also {#link|Function Parameter Type Inference#}</li> |
| 10375 | </ul> |
| 10376 | </td> |
| 10377 | </tr> |
| 10378 | <tr> |
| 10379 | <td> |
| 10380 | <pre>{#syntax#}asm{#endsyntax#}</pre> |
| 10381 | </td> |
| 10382 | <td> |
| 10383 | {#syntax#}asm{#endsyntax#} begins an inline assembly expression. This allows for directly controlling the machine code generated on compilation. |
| 10384 | <ul> |
| 10385 | <li>See also {#link|Assembly#}</li> |
| 10386 | </ul> |
| 10387 | </td> |
| 10388 | </tr> |
| 10389 | <tr> |
| 10390 | <td> |
| 10391 | <pre>{#syntax#}async{#endsyntax#}</pre> |
| 10392 | </td> |
| 10393 | <td> |
| 10394 | {#syntax#}async{#endsyntax#} can be used before a function call to get a pointer to the function's frame when it suspends. |
| 10395 | <ul> |
| 10396 | <li>See also {#link|Async Functions#}</li> |
| 10397 | </ul> |
| 10398 | </td> |
| 10399 | </tr> |
| 10400 | <tr> |
| 10401 | <td> |
| 10402 | <pre>{#syntax#}await{#endsyntax#}</pre> |
| 10403 | </td> |
| 10404 | <td> |
| 10405 | {#syntax#}await{#endsyntax#} can be used to suspend the current function until the frame provided after the {#syntax#}await{#endsyntax#} completes. |
| 10406 | {#syntax#}await{#endsyntax#} copies the value returned from the target function's frame to the caller. |
| 10407 | <ul> |
| 10408 | <li>See also {#link|Async Functions#}</li> |
| 10409 | </ul> |
| 10410 | </td> |
| 10411 | </tr> |
| 10412 | <tr> |
| 10413 | <td> |
| 10414 | <pre>{#syntax#}break{#endsyntax#}</pre> |
| 10415 | </td> |
| 10416 | <td> |
| 10417 | {#syntax#}break{#endsyntax#} can be used with a block label to return a value from the block. |
| 10418 | It can also be used to exit a loop before iteration completes naturally. |
| 10419 | <ul> |
| 10420 | <li>See also {#link|blocks#}, {#link|while#}, {#link|for#}</li> |
| 10421 | </ul> |
| 10422 | </td> |
| 10423 | </tr> |
| 10424 | <tr> |
| 10425 | <td> |
| 10426 | <pre>{#syntax#}catch{#endsyntax#}</pre> |
| 10427 | </td> |
| 10428 | <td> |
| 10429 | {#syntax#}catch{#endsyntax#} can be used to evaluate an expression if the expression before it evaluates to an error. |
| 10430 | The expression after the {#syntax#}catch{#endsyntax#} can optionally capture the error value. |
| 10431 | <ul> |
| 10432 | <li>See also {#link|catch#}, {#link|Operators#}</li> |
| 10433 | </ul> |
| 10434 | </td> |
| 10435 | </tr> |
| 10436 | <tr> |
| 10437 | <td> |
| 10438 | <pre>{#syntax#}comptime{#endsyntax#}</pre> |
| 10439 | </td> |
| 10440 | <td> |
| 10441 | {#syntax#}comptime{#endsyntax#} before a declaration can be used to label variables or function parameters as known at compile time. |
| 10442 | It can also be used to guarantee an expression is run at compile time. |
| 10443 | <ul> |
| 10444 | <li>See also {#link|comptime#}</li> |
| 10445 | </ul> |
| 10446 | </td> |
| 10447 | </tr> |
| 10448 | <tr> |
| 10449 | <td> |
| 10450 | <pre>{#syntax#}const{#endsyntax#}</pre> |
| 10451 | </td> |
| 10452 | <td> |
| 10453 | {#syntax#}const{#endsyntax#} declares a variable that can not be modified. |
| 10454 | Used as a pointer attribute, it denotes the value referenced by the pointer cannot be modified. |
| 10455 | <ul> |
| 10456 | <li>See also {#link|Variables#}</li> |
| 10457 | </ul> |
| 10458 | </td> |
| 10459 | </tr> |
| 10460 | <tr> |
| 10461 | <td> |
| 10462 | <pre>{#syntax#}continue{#endsyntax#}</pre> |
| 10463 | </td> |
| 10464 | <td> |
| 10465 | {#syntax#}continue{#endsyntax#} can be used in a loop to jump back to the beginning of the loop. |
| 10466 | <ul> |
| 10467 | <li>See also {#link|while#}, {#link|for#}</li> |
| 10468 | </ul> |
| 10469 | </td> |
| 10470 | </tr> |
| 10471 | <tr> |
| 10472 | <td> |
| 10473 | <pre>{#syntax#}defer{#endsyntax#}</pre> |
| 10474 | </td> |
| 10475 | <td> |
| 10476 | {#syntax#}defer{#endsyntax#} will execute an expression when control flow leaves the current block. |
| 10477 | <ul> |
| 10478 | <li>See also {#link|defer#}</li> |
| 10479 | </ul> |
| 10480 | </td> |
| 10481 | </tr> |
| 10482 | <tr> |
| 10483 | <td> |
| 10484 | <pre>{#syntax#}else{#endsyntax#}</pre> |
| 10485 | </td> |
| 10486 | <td> |
| 10487 | {#syntax#}else{#endsyntax#} can be used to provide an alternate branch for {#syntax#}if{#endsyntax#}, {#syntax#}switch{#endsyntax#}, |
| 10488 | {#syntax#}while{#endsyntax#}, and {#syntax#}for{#endsyntax#} expressions. |
| 10489 | <ul> |
| 10490 | <li>If used after an if expression, the else branch will be executed if the test value returns false, null, or an error.</li> |
| 10491 | <li>If used within a switch expression, the else branch will be executed if the test value matches no other cases.</li> |
| 10492 | <li>If used after a loop expression, the else branch will be executed if the loop finishes without breaking.</li> |
| 10493 | <li>See also {#link|if#}, {#link|switch#}, {#link|while#}, {#link|for#}</li> |
| 10494 | </ul> |
| 10495 | </td> |
| 10496 | </tr> |
| 10497 | <tr> |
| 10498 | <td> |
| 10499 | <pre>{#syntax#}enum{#endsyntax#}</pre> |
| 10500 | </td> |
| 10501 | <td> |
| 10502 | {#syntax#}enum{#endsyntax#} defines an enum type. |
| 10503 | <ul> |
| 10504 | <li>See also {#link|enum#}</li> |
| 10505 | </ul> |
| 10506 | </td> |
| 10507 | </tr> |
| 10508 | <tr> |
| 10509 | <td> |
| 10510 | <pre>{#syntax#}errdefer{#endsyntax#}</pre> |
| 10511 | </td> |
| 10512 | <td> |
| 10513 | {#syntax#}errdefer{#endsyntax#} will execute an expression when control flow leaves the current block if the function returns an error. |
| 10514 | <ul> |
| 10515 | <li>See also {#link|errdefer#}</li> |
| 10516 | </ul> |
| 10517 | </td> |
| 10518 | </tr> |
| 10519 | <tr> |
| 10520 | <td> |
| 10521 | <pre>{#syntax#}error{#endsyntax#}</pre> |
| 10522 | </td> |
| 10523 | <td> |
| 10524 | {#syntax#}error{#endsyntax#} defines an error type. |
| 10525 | <ul> |
| 10526 | <li>See also {#link|Errors#}</li> |
| 10527 | </ul> |
| 10528 | </td> |
| 10529 | </tr> |
| 10530 | <tr> |
| 10531 | <td> |
| 10532 | <pre>{#syntax#}export{#endsyntax#}</pre> |
| 10533 | </td> |
| 10534 | <td> |
| 10535 | {#syntax#}export{#endsyntax#} makes a function or variable externally visible in the generated object file. |
| 10536 | Exported functions default to the C calling convention. |
| 10537 | <ul> |
| 10538 | <li>See also {#link|Functions#}</li> |
| 10539 | </ul> |
| 10540 | </td> |
| 10541 | </tr> |
| 10542 | <tr> |
| 10543 | <td> |
| 10544 | <pre>{#syntax#}extern{#endsyntax#}</pre> |
| 10545 | </td> |
| 10546 | <td> |
| 10547 | {#syntax#}extern{#endsyntax#} can be used to declare a function or variable that will be resolved at link time, when linking statically |
| 10548 | or at runtime, when linking dynamically. |
| 10549 | <ul> |
| 10550 | <li>See also {#link|Functions#}</li> |
| 10551 | </ul> |
| 10552 | </td> |
| 10553 | </tr> |
| 10554 | <tr> |
| 10555 | <td> |
| 10556 | <pre>{#syntax#}false{#endsyntax#}</pre> |
| 10557 | </td> |
| 10558 | <td> |
| 10559 | The boolean value {#syntax#}false{#endsyntax#}. |
| 10560 | <ul> |
| 10561 | <li>See also {#link|Primitive Values#}</li> |
| 10562 | </ul> |
| 10563 | </td> |
| 10564 | </tr> |
| 10565 | <tr> |
| 10566 | <td> |
| 10567 | <pre>{#syntax#}fn{#endsyntax#}</pre> |
| 10568 | </td> |
| 10569 | <td> |
| 10570 | {#syntax#}fn{#endsyntax#} declares a function. |
| 10571 | <ul> |
| 10572 | <li>See also {#link|Functions#}</li> |
| 10573 | </ul> |
| 10574 | </td> |
| 10575 | </tr> |
| 10576 | <tr> |
| 10577 | <td> |
| 10578 | <pre>{#syntax#}for{#endsyntax#}</pre> |
| 10579 | </td> |
| 10580 | <td> |
| 10581 | A {#syntax#}for{#endsyntax#} expression can be used to iterate over the elements of a slice, array, or tuple. |
| 10582 | <ul> |
| 10583 | <li>See also {#link|for#}</li> |
| 10584 | </ul> |
| 10585 | </td> |
| 10586 | </tr> |
| 10587 | <tr> |
| 10588 | <td> |
| 10589 | <pre>{#syntax#}if{#endsyntax#}</pre> |
| 10590 | </td> |
| 10591 | <td> |
| 10592 | An {#syntax#}if{#endsyntax#} expression can test boolean expressions, optional values, or error unions. |
| 10593 | For optional values or error unions, the if expression can capture the unwrapped value. |
| 10594 | <ul> |
| 10595 | <li>See also {#link|if#}</li> |
| 10596 | </ul> |
| 10597 | </td> |
| 10598 | </tr> |
| 10599 | <tr> |
| 10600 | <td> |
| 10601 | <pre>{#syntax#}inline{#endsyntax#}</pre> |
| 10602 | </td> |
| 10603 | <td> |
| 10604 | {#syntax#}inline{#endsyntax#} can be used to label a loop expression such that it will be unrolled at compile time. |
| 10605 | It can also be used to force a function to be inlined at all call sites. |
| 10606 | <ul> |
| 10607 | <li>See also {#link|inline while#}, {#link|inline for#}, {#link|Functions#}</li> |
| 10608 | </ul> |
| 10609 | </td> |
| 10610 | </tr> |
| 10611 | <tr> |
| 10612 | <td> |
| 10613 | <pre>{#syntax#}noalias{#endsyntax#}</pre> |
| 10614 | </td> |
| 10615 | <td> |
| 10616 | The {#syntax#}noalias{#endsyntax#} keyword. |
| 10617 | <ul> |
| 10618 | <li>TODO add documentation for noalias</li> |
| 10619 | </ul> |
| 10620 | </td> |
| 10621 | </tr> |
| 10622 | <tr> |
| 10623 | <td> |
| 10624 | <pre>{#syntax#}nosuspend{#endsyntax#}</pre> |
| 10625 | </td> |
| 10626 | <td> |
| 10627 | The {#syntax#}nosuspend{#endsyntax#} keyword. |
| 10628 | <ul> |
| 10629 | <li>TODO add documentation for nosuspend</li> |
| 10630 | </ul> |
| 10631 | </td> |
| 10632 | </tr> |
| 10633 | <tr> |
| 10634 | <td> |
| 10635 | <pre>{#syntax#}null{#endsyntax#}</pre> |
| 10636 | </td> |
| 10637 | <td> |
| 10638 | The optional value {#syntax#}null{#endsyntax#}. |
| 10639 | <ul> |
| 10640 | <li>See also {#link|null#}</li> |
| 10641 | </ul> |
| 10642 | </td> |
| 10643 | </tr> |
| 10644 | <tr> |
| 10645 | <td> |
| 10646 | <pre>{#syntax#}or{#endsyntax#}</pre> |
| 10647 | </td> |
| 10648 | <td> |
| 10649 | The boolean operator {#syntax#}or{#endsyntax#}. |
| 10650 | <ul> |
| 10651 | <li>See also {#link|Operators#}</li> |
| 10652 | </ul> |
| 10653 | </td> |
| 10654 | </tr> |
| 10655 | <tr> |
| 10656 | <td> |
| 10657 | <pre>{#syntax#}orelse{#endsyntax#}</pre> |
| 10658 | </td> |
| 10659 | <td> |
| 10660 | {#syntax#}orelse{#endsyntax#} can be used to evaluate an expression if the expression before it evaluates to null. |
| 10661 | <ul> |
| 10662 | <li>See also {#link|Optionals#}, {#link|Operators#}</li> |
| 10663 | </ul> |
| 10664 | </td> |
| 10665 | </tr> |
| 10666 | <tr> |
| 10667 | <td> |
| 10668 | <pre>{#syntax#}packed{#endsyntax#}</pre> |
| 10669 | </td> |
| 10670 | <td> |
| 10671 | The {#syntax#}packed{#endsyntax#} keyword before a struct definition changes the struct's in-memory layout |
| 10672 | to the guaranteed {#syntax#}packed{#endsyntax#} layout. |
| 10673 | <ul> |
| 10674 | <li>See also {#link|packed struct#}</li> |
| 10675 | </ul> |
| 10676 | </td> |
| 10677 | </tr> |
| 10678 | <tr> |
| 10679 | <td> |
| 10680 | <pre>{#syntax#}pub{#endsyntax#}</pre> |
| 10681 | </td> |
| 10682 | <td> |
| 10683 | The {#syntax#}pub{#endsyntax#} in front of a top level declaration makes the declaration available |
| 10684 | to reference from a different file than the one it is declared in. |
| 10685 | <ul> |
| 10686 | <li>See also {#link|import#}</li> |
| 10687 | </ul> |
| 10688 | </td> |
| 10689 | </tr> |
| 10690 | <tr> |
| 10691 | <td> |
| 10692 | <pre>{#syntax#}resume{#endsyntax#}</pre> |
| 10693 | </td> |
| 10694 | <td> |
| 10695 | {#syntax#}resume{#endsyntax#} will continue execution of a function frame after the point the function was suspended. |
| 10696 | <ul> |
| 10697 | <li>See also {#link|Suspend and Resume#}</li> |
| 10698 | </ul> |
| 10699 | </td> |
| 10700 | </tr> |
| 10701 | <tr> |
| 10702 | <td> |
| 10703 | <pre>{#syntax#}return{#endsyntax#}</pre> |
| 10704 | </td> |
| 10705 | <td> |
| 10706 | {#syntax#}return{#endsyntax#} exits a function with a value. |
| 10707 | <ul> |
| 10708 | <li>See also {#link|Functions#}</li> |
| 10709 | </ul> |
| 10710 | </td> |
| 10711 | </tr> |
| 10712 | <tr> |
| 10713 | <td> |
| 10714 | <pre>{#syntax#}linksection{#endsyntax#}</pre> |
| 10715 | </td> |
| 10716 | <td> |
| 10717 | The {#syntax#}linksection{#endsyntax#} keyword. |
| 10718 | <ul> |
| 10719 | <li>TODO add documentation for linksection</li> |
| 10720 | </ul> |
| 10721 | </td> |
| 10722 | </tr> |
| 10723 | <tr> |
| 10724 | <td> |
| 10725 | <pre>{#syntax#}struct{#endsyntax#}</pre> |
| 10726 | </td> |
| 10727 | <td> |
| 10728 | {#syntax#}struct{#endsyntax#} defines a struct. |
| 10729 | <ul> |
| 10730 | <li>See also {#link|struct#}</li> |
| 10731 | </ul> |
| 10732 | </td> |
| 10733 | </tr> |
| 10734 | <tr> |
| 10735 | <td> |
| 10736 | <pre>{#syntax#}suspend{#endsyntax#}</pre> |
| 10737 | </td> |
| 10738 | <td> |
| 10739 | {#syntax#}suspend{#endsyntax#} will cause control flow to return to the call site or resumer of the function. |
| 10740 | {#syntax#}suspend{#endsyntax#} can also be used before a block within a function, |
| 10741 | to allow the function access to its frame before control flow returns to the call site. |
| 10742 | <ul> |
| 10743 | <li>See also {#link|Suspend and Resume#}</li> |
| 10744 | </ul> |
| 10745 | </td> |
| 10746 | </tr> |
| 10747 | <tr> |
| 10748 | <td> |
| 10749 | <pre>{#syntax#}switch{#endsyntax#}</pre> |
| 10750 | </td> |
| 10751 | <td> |
| 10752 | A {#syntax#}switch{#endsyntax#} expression can be used to test values of a common type. |
| 10753 | {#syntax#}switch{#endsyntax#} cases can capture field values of a {#link|Tagged union#}. |
| 10754 | <ul> |
| 10755 | <li>See also {#link|switch#}</li> |
| 10756 | </ul> |
| 10757 | </td> |
| 10758 | </tr> |
| 10759 | <tr> |
| 10760 | <td> |
| 10761 | <pre>{#syntax#}test{#endsyntax#}</pre> |
| 10762 | </td> |
| 10763 | <td> |
| 10764 | The {#syntax#}test{#endsyntax#} keyword can be used to denote a top-level block of code |
| 10765 | used to make sure behavior meets expectations. |
| 10766 | <ul> |
| 10767 | <li>See also {#link|Zig Test#}</li> |
| 10768 | </ul> |
| 10769 | </td> |
| 10770 | </tr> |
| 10771 | <tr> |
| 10772 | <td> |
| 10773 | <pre>{#syntax#}threadlocal{#endsyntax#}</pre> |
| 10774 | </td> |
| 10775 | <td> |
| 10776 | {#syntax#}threadlocal{#endsyntax#} can be used to specify a variable as thread-local. |
| 10777 | <ul> |
| 10778 | <li>See also {#link|Thread Local Variables#}</li> |
| 10779 | </ul> |
| 10780 | </td> |
| 10781 | </tr> |
| 10782 | <tr> |
| 10783 | <td> |
| 10784 | <pre>{#syntax#}true{#endsyntax#}</pre> |
| 10785 | </td> |
| 10786 | <td> |
| 10787 | The boolean value {#syntax#}true{#endsyntax#}. |
| 10788 | <ul> |
| 10789 | <li>See also {#link|Primitive Values#}</li> |
| 10790 | </ul> |
| 10791 | </td> |
| 10792 | </tr> |
| 10793 | <tr> |
| 10794 | <td> |
| 10795 | <pre>{#syntax#}try{#endsyntax#}</pre> |
| 10796 | </td> |
| 10797 | <td> |
| 10798 | {#syntax#}try{#endsyntax#} evaluates an error union expression. |
| 10799 | If it is an error, it returns from the current function with the same error. |
| 10800 | Otherwise, the expression results in the unwrapped value. |
| 10801 | <ul> |
| 10802 | <li>See also {#link|try#}</li> |
| 10803 | </ul> |
| 10804 | </td> |
| 10805 | </tr> |
| 10806 | <tr> |
| 10807 | <td> |
| 10808 | <pre>{#syntax#}undefined{#endsyntax#}</pre> |
| 10809 | </td> |
| 10810 | <td> |
| 10811 | {#syntax#}undefined{#endsyntax#} can be used to leave a value uninitialized. |
| 10812 | <ul> |
| 10813 | <li>See also {#link|undefined#}</li> |
| 10814 | </ul> |
| 10815 | </td> |
| 10816 | </tr> |
| 10817 | <tr> |
| 10818 | <td> |
| 10819 | <pre>{#syntax#}union{#endsyntax#}</pre> |
| 10820 | </td> |
| 10821 | <td> |
| 10822 | {#syntax#}union{#endsyntax#} defines a union. |
| 10823 | <ul> |
| 10824 | <li>See also {#link|union#}</li> |
| 10825 | </ul> |
| 10826 | </td> |
| 10827 | </tr> |
| 10828 | <tr> |
| 10829 | <td> |
| 10830 | <pre>{#syntax#}unreachable{#endsyntax#}</pre> |
| 10831 | </td> |
| 10832 | <td> |
| 10833 | {#syntax#}unreachable{#endsyntax#} can be used to assert that control flow will never happen upon a particular location. |
| 10834 | Depending on the build mode, {#syntax#}unreachable{#endsyntax#} may emit a panic. |
| 10835 | <ul> |
| 10836 | <li>Emits a panic in {#syntax#}Debug{#endsyntax#} and {#syntax#}ReleaseSafe{#endsyntax#} mode, or when using <code>zig test</code>.</li> |
| 10837 | <li>Does not emit a panic in {#syntax#}ReleaseFast{#endsyntax#} mode, unless <code>zig test</code> is being used.</li> |
| 10838 | <li>See also {#link|unreachable#}</li> |
| 10839 | </ul> |
| 10840 | </td> |
| 10841 | </tr> |
| 10842 | <tr> |
| 10843 | <td> |
| 10844 | <pre>{#syntax#}usingnamespace{#endsyntax#}</pre> |
| 10845 | </td> |
| 10846 | <td> |
| 10847 | {#syntax#}usingnamespace{#endsyntax#} is a top-level declaration that imports all the public declarations of the operand, |
| 10848 | which must be a struct, union, or enum, into the current scope. |
| 10849 | <ul> |
| 10850 | <li>See also {#link|usingnamespace#}</li> |
| 10851 | </ul> |
| 10852 | </td> |
| 10853 | </tr> |
| 10854 | <tr> |
| 10855 | <td> |
| 10856 | <pre>{#syntax#}var{#endsyntax#}</pre> |
| 10857 | </td> |
| 10858 | <td> |
| 10859 | {#syntax#}var{#endsyntax#} declares a variable that may be modified. |
| 10860 | <ul> |
| 10861 | <li>See also {#link|Variables#}</li> |
| 10862 | </ul> |
| 10863 | </td> |
| 10864 | </tr> |
| 10865 | <tr> |
| 10866 | <td> |
| 10867 | <pre>{#syntax#}volatile{#endsyntax#}</pre> |
| 10868 | </td> |
| 10869 | <td> |
| 10870 | {#syntax#}volatile{#endsyntax#} can be used to denote loads or stores of a pointer have side effects. |
| 10871 | It can also modify an inline assembly expression to denote it has side effects. |
| 10872 | <ul> |
| 10873 | <li>See also {#link|volatile#}, {#link|Assembly#}</li> |
| 10874 | </ul> |
| 10875 | </td> |
| 10876 | </tr> |
| 10877 | <tr> |
| 10878 | <td> |
| 10879 | <pre>{#syntax#}while{#endsyntax#}</pre> |
| 10880 | </td> |
| 10881 | <td> |
| 10882 | A {#syntax#}while{#endsyntax#} expression can be used to repeatedly test a boolean, optional, or error union expression, |
| 10883 | and cease looping when that expression evaluates to false, null, or an error, respectively. |
| 10884 | <ul> |
| 10885 | <li>See also {#link|while#}</li> |
| 10886 | </ul> |
| 10887 | </td> |
| 10888 | </tr> |
| 10889 | </table> |
| 10890 | </div> |
| 10319 | 10891 | {#header_close#} |
| 10320 | 10892 | |
| 10321 | 10893 | {#header_open|Grammar#} |
Veikka Tuominen <git@vexu.eu> 2020-08-27 16:12:18+03:00
GitHub <noreply@github.com> 2020-08-27 16:12:18+03:00