compiler/utils/ListSetOps.lhs · 854f731436073f709f7896f48d239a52da046043 · Alexander Kaznacheev / GHC

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12 years ago

Define ListSetOps.getNth, and use it · b0c0cae7

Simon Peyton Jones authored 12 years ago

I was tracking down an error looking like
  Prelude.(!!): index too large
which is very unhelpful.  This patch replaces at least some uses
of (!!) in GHC with getNth, which has a more helpful error
message (with DEBUG anyway)

b0c0cae7

History

Define ListSetOps.getNth, and use it

Simon Peyton Jones authored 12 years ago

I was tracking down an error looking like
  Prelude.(!!): index too large
which is very unhelpful.  This patch replaces at least some uses
of (!!) in GHC with getNth, which has a more helpful error
message (with DEBUG anyway)

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