Posts Tagged else

If-Else is Really Expensive

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Sometimes a tiny amount of code costs a huge amount of performance. This is especially true of built-in language features, which many programmers assume to be extremely cheap if not free. Today we’ll look at if and see just how much performance it can cost your app. Read on to see!

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From AS3 to C#, Part 17: Conditionals, Exceptions, and Iterators

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Continuing the series on C# syntax, today we’ll look at the differences an AS3 programmer can expect to encounter when using conditionals (if/else, switch/case/break/goto) and exceptions (try/catch/finally/throw). We’ll also look at iterators, an all-new category for AS3 programmers that empowers us to both iterate however we want and to write coroutines, a kind of lightweight pseudo-thread.

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ASC 2.0 Conditionals Performance

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Surprisingly, some interesting things have been happening with conditionals like if-else in AS3. First, a brand new AS3 compiler—ASC 2.0—has been released with the promise that it’ll generate more efficient bytecode. Second, some readers have pointed out the existence of a new (to me) technique: the “if-else tree”. Today’s article takes a look at just what that is and tests it against the classic options: if-else, the ternary (? :) operator, and the switch statement. Which will be fastest?

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Advanced break and continue Statements

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There’s more to AS3’s break and continue statements than you might think. Chances are, you’ve used them to skip to after a loop (break) and skip the current loop iteration (continue), but they can do so much more. Today’s article will cover some of the advanced ways to use the break and continue statements in AS3 resulting in nicer—and maybe even faster—code.

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Conditionals Performance Revisited

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Today I’m revisiting an article I wrote last August about conditionals: if-else chains, ternary (? :) operators, and switch statements. In that article I showed that if-else chains are about as fast as ternary operators and that both of them are 10-15% faster than switch statements. Today we’ll take a look at how those conditionals scale beyond just the few cases in the last article.

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Conditionals Performance

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Now that the Flash Player 10.1 testing is through I can return to a comment asking about the performance difference between if-else chains and the ternary (? :) operator. Further, I’ll discuss switch statements to see if there is any difference in performance for these commonly-used methods of flow control.

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