Use if-else, if-else with initializer, and if-constexpr statements to control conditional branching.
Mixxx is Free DJ software that gives you everything you need to perform live mixes. - If with initializer · mixxxdj/mixxx Wiki
init-statement-(since C++17)either anexpression statement(which may be a null statement;) asimple declaration, typically a declaration of a variable with initializer, but it may declare arbitrary many variables or be astructured bindingdeclaration ...
在 C++17 中，可以用If statement with initializer：if (auto m = 7; m < 8) xxx;...
ES.70: Prefer a switch-statement to an if-statement when there is a choice ES.70:进行选择时,switch语句比if语句好...效率:switch语句执行的时常数比较运算,相比一系列if-then-else语句,通常可以更好地被优化。...A switch enables some heuristic consistency checking...If not, is there a default...
expression-statement simple-declaration condition? expression attribute-specifier-seqoptdecl-specifier-seqdeclaratorbrace-or-equal-initializer statement? expression-statement compound-statement expression-statement? expressionopt;
ErrorStatementSyntax EventBlockSyntax EventContainerSyntax EventStatementSyntax ExecutableStatementSyntax ExitStatementSyntax ExpressionRangeVariableSyntax ExpressionStatementSyntax ExpressionSyntax ExternalChecksumDirectiveTriviaSyntax ExternalSourceDirectiveTriviaSyntax FieldDeclarationSyntax FieldInitializerSyntax FinallyBlockSyn...
A single-line If statement contains several statements separated by colons (:), one of which is an End statement for a control block outside the single-line If. Single-line If statements do not use the End If statement.Error ID: BC32005...
It seems that MSVC can’t take a nullptr as const char* when used in an initializer list. This Godbolt verifies that Clang, GCC, and Intel’s OneAPI compiler take the code successfully: https://godbolt.org/z/5G5MdTnzr Preprocessed file: test.i Build line: "cl" "-Itest1.e...
如果你想扩展它的编译时间，你可以使用下面这样的代码