使用if-else-if: 需要进行条件语句而必须使用 需要判断的条件很少时,一般不超过5个 使用switch-case: 能用则用 参考资料 Advantage of switch over if-else statementIf…else…if vs switch…case, difference and usage?switch vs if else
If the number of case labels gets too large, the switch can be hard to read. Compared to the equivalent if-else statements, a switch-statement can be more readable, makes it clearer that it is the same expression being tested for equality in each case, and has the advantage of only ...
else if ( type == candidateModeMemory[4] ) { mode_index = 4; } else if ( type == candidateModeMemory[5] ) { mode_index = 5; } else if ( type == candidateModeMemory[6] ) { mode_index = 6; } else if ( type == candidateModeMemory[7] ) { mode_index = 7; } else if ...
Vor Python 3.10 mussten Python-Entwickler mehrere if-elif-else-Anweisungen oder Wörterbücher verwenden, um die Switch-Case-Funktion zu simulieren. Hier ist ein einfaches Beispiel mit if-elif-else: day = input("Enter the day of the week: ").capitalize() if day == "Saturday" or day =...
if-else语句可以根据条件的真假执行不同的代码块,更适合处理boolean类型的条件判断。 总结起来,boolean switch语句会有编译器警告是因为Java语言规定switch语句只支持整型、字符型、枚举类型以及String类型的变量作为判断条件,不支持boolean类型。因此,我们应该使用if-else语句来处理boolean类型的条件判断。
Unclassified [#IABV2_LABEL_PURPOSES#] [#IABV2_LABEL_FEATURES#] [#IABV2_LABEL_PARTNERS#] 0 As far as I can tell, it seems that you can use the switch and if statements to achieve the same results. Am I missing something, or are they more or less interchangeable?
This example demonstrates how control “drops through” unless a break statement is used: Copy BOOL fClosing = FALSE; ... switch( wParam ) { case IDM_F_CLOSE: // File close command. fClosing = TRUE; // fall through case IDM_F_SAVE: // File save command. if( document->IsDirty(...
Execution proceeds until the end of the body, or until a break statement transfers control out of the body. Use of the switch statement usually looks something like this: C Copy switch ( expression ) { // declarations // . . . case constant_expression: // statements executed if the ...
The if-else Statement The __if_exists Statement The __if_not_exists Statement The switch Statement Iteration Statements Jump Statements Declaration Statements Читатианглійською Зберегти Друк TwitterLinkedInFacebookЕлектроннапошта ...
with 语句的用途是将代码作用域设置为特定的对象,其语法是:with (expression) statement;使用 with 语句的主要场景是针对一个对象反复操作,这时候将代码作用域设置为该对象能提供便 利,如下面的例子所示:let qs = location.search.substring(1); let hostName = location.hostname; le ...