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Challenge 1: "Write a script to demonstrate brace expansion. For example,
script would take command line argument Perl {Daily,Weekly,Monthly,Yearly}
Challenge and should expand it and print like below:
Perl Daily Challenge
Perl Weekly Challenge
Perl Monthly Challenge
Perl Yearly Challenge
My notes: Nested braces may be slightly tricky, first I tried a recursive
function to find and expand the innermost {}, but that produced the
right output in a weird order, with duplicates.
Instead, try a state machine to track the locations of the outer level
elements {,}. Extract $before, $after and an array of alternatives @alt,
then recombine them, until there are no { left.
Challenge 2: "Write a script to demonstrate calling a C function. It
could be any user defined or standard C function."
My notes: Hmm, either XS or Inline::C. I've never used either:-)
Wrote simple sqrt routine (algorithm: squaring the rectangle) in C,
wrote the same in Perl, then used Benchmark to benchmark both versions.
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