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POMultiple return points in scala closure/anonymous function
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copied!<p>As far as I understand it, there is no way in Scala to have multiple return points in an anonymous function, i.e.</p> <pre><code>someList.map((i) => { if (i%2 == 0) return i // the early return allows me to avoid the else clause doMoreStuffAndReturnSomething(i) // thing of this being a few more ifs and returns }) </code></pre> <p>raises an <code>error: return outside method definition</code>. (And if it weren’t to raise that, the code would not work as I’d like it to work.)</p> <p>One workaround I could thing of would be the following</p> <pre><code>someList.map({ def f(i: Int):Int = { if (i%2 == 0) return i doMoreStuffAndReturnSomething(i) } f }) </code></pre> <p>however, I’d like to know if there is another ‘accepted’ way of doing this. Maybe a possibility to go without a name for the inner function?</p> <p>(A use case would be to emulate some valued <code>continue</code> construct inside the loop.)</p> <p><strong>Edit</strong></p> <p>Please believe me, that there is a need for avoiding the else statement, because, the <code>doMoreStuff</code> part might actually look like:</p> <pre><code>val j = someCalculation(i) if (j == 0) return 8 val k = needForRecalculation(i) if (k == j) return 9 finalRecalc(i) ... </code></pre> <p>which, when you only have an <code>if</code>–<code>else</code> structure available gets easily messed up.</p> <p>Of course, in the simple example I gave in the beginning, it is easier to just use <code>else</code>. Sorry, I thought this was clear.</p>

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