Why is this getting so much up votes.

Reasons may include:

  1. first answer
  2. pointing out that foreach or map/grep are essentially the same thing (seee below)
  3. telling the OP that a working and readable solution is enough
  4. eating my own dog food by not writing too much (but see below)

Hash slices are syntactic sugar for iterating over a set of keys. I'd suspect the code path for both being identical (see B, do benchmarks with a meaningful set). Elegance is in the eye of the beholder.

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^3: A more elegant way to filter a nested hash? by shmem
in thread A more elegant way to filter a nested hash? by jimpudar

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