support for-else and while-else #56153
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This adopts the semantics discussed in #1289, namely the `else` block is executed whenever the loop never runs. Unlike Python, `break` and `continue` are irrelevant. Multidimensional loops are not supported since there is some ambiguity whether e.g. ```julia for i in 1:3, j in 1:0 print(1) else print(2) end ``` should print 2 once, thrice or maybe not even at all. Currently only supported in the flisp parser, so requires `JULIA_USE_FLISP_PARSER=1`. I could use some guidance on the necessary steps to add this to JuliaSyntax as well - AFAIU this would also require #56110 first. closes #1289
simeonschaub
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simeonschaub
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downvote. IMO it's a bad idea to add not-obvious-what-it-does syntax that also happens to not mean the same thing at all as identical syntax in the world's most popular language. |
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This adopts the semantics discussed in #1289, namely the
elseblock is executed whenever the loop never runs. Unlike Python,breakandcontinueare irrelevant. Multidimensional loops are not supported since there is some ambiguity whether e.g.should print 2 once, thrice or maybe not even at all.
Currently only supported in the flisp parser, so requires
JULIA_USE_FLISP_PARSER=1. I could use some guidance on the necessary steps to add this to JuliaSyntax as well - AFAIU this would also require #56110 first.closes #1289