MathGroup Archive 2006

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HoldFirst confusion

  • To: mathgroup at
  • Subject: [mg65503] HoldFirst confusion
  • From: Yaroslav Bulatov <yaroslavvb at>
  • Date: Wed, 5 Apr 2006 06:56:00 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

The following gives an error
f = 5; f[a_] = a

Set is HoldFirst, so why does it evaluate it's first argument f[a_]?


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