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- What are the differences between if-else and else-if? [closed]
IF a condition is true, do something, ELSE (otherwise) IF another condition is true, do something, ELSE do this when all else fails Note that there is no else if construct specifically, just if and else, but the syntax allows you to place else and if together, and the convention is not to nest them deeper when you do For example:
- IF, ELSE IF, ELSE ou IF IF IF. Quando usar, qual a diferença?
As demais respostas já explicam muito bem, mas gostaria de complementar com o seguinte: com frequência existem várias maneiras de se fazer a mesma coisa, sem que exista claramente um "melhor" ou "pior", de modo que cabe a você - pela sua experiência ou pelo seu feeling - decidir qual delas usar caso a caso
- programming languages - if else and if elseif - Stack Overflow
Without "elseif" syntax you would have to write chain if-statements for processing one of several possible outcomes this way:
- What is the correct syntax for else if? - Stack Overflow
Obviously, in that context having a single-token directive is valuable, since parsing #else if <code> vs #else <code that could theoretically even be an if statement> would've complicated a syntax that was intended to be bog-simple
- angular - How can I use *ngIf else? - Stack Overflow
Just add new updates from Angular 8 For case if with else, we can use ngIf and ngIfElse <ng-template [ngIf]="condition" [ngIfElse]="elseBlock"> Content to render when condition is true < ng-template> <ng-template #elseBlock> Content to render when condition is false < ng-template>
- What is the intended use of the optional else clause of the try . . .
Try-except-else is great for combining the EAFP pattern with duck-typing: try: cs = x cleanupSet except AttributeError: pass else: for v in cs: v cleanup() You might think this naïve code is fine: try: for v in x cleanupSet: v clenaup() # <-- deliberate typo except AttributeError: pass
- How do you use the ? : (conditional) operator in JavaScript?
This is a one-line shorthand for an if-else statement It's called the conditional operator 1 Here is an example of code that could be shortened with the conditional operator:
- if statement - use of else if in c++ - Stack Overflow
'else if' is generally to be preferred, because you can keep inserting or appending more of them indefinitely, or append an 'else', whereas with the other form you have to endlessly mess around with braces to get the same effect, and you risk altering the semantics, as indeed you have done in your second sample
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