Let's write a setjmp

Re:Let's write a setjmp by layer8 on Sunday February 12, 2023 @12:03PM (#34764460)

I would use a do-while, because at least one char is always copied:

    char c;
    do
    {
        c = *src++;
        *dst++ = c;
    }
    while (c != 0);

The post-increment is idiomatic enough in C-based languages that I wouldn’t worry about that.

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Re:Let's write a setjmp by bee_rider on Sunday February 12, 2023 @12:55PM (#34765002)

I don’t write much C, but to an outsider like me this is a pretty big improvement.

It is a shame post-test loops aren’t more popular, given the similarity to the assembly they output. Seems more mechanically sympathetic. Oh well, at least it is an excuse to whip out the goto.

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Re:Let's write a setjmp by layer8 on Sunday February 12, 2023 @01:09PM (#34765131)

In Pascal, you could do

    repeat
        ...
    until c = 0;

which might be even clearer for this use case.

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Re:Let's write a setjmp by flohofwoe on Monday February 13, 2023 @05:53AM (#34772110)

I was considering that but had my doubts that people who already find post-increment confusing could handle a do-while loop ;)

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