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2 points by parenthesis 5890 days ago | link | parent

Another possibility would be a solitary & (echoing, as mentioned, &optional in CL).


1 point by AndyBoySouthPas 5888 days ago | link

In CL I use named keyword arguments much more than optional ones, so I would want to keep single character prefix for keywords. This leads to a possibility: (&& x) would signify optional, (& x) would signify keyword.

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