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Re: Question about DayOfWeek

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126218] Re: Question about DayOfWeek
  • From: James Stein <mathgroup at stein.org>
  • Date: Wed, 25 Apr 2012 00:37:37 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201204240934.FAA24505@smc.vnet.net>

Roughly speaking, "==" only compares things that are comparable.
In cases like these, use "===" which demands "sameness" on both sides.
I make this mistake often -- not a typo, but a thinko.

On Tue, Apr 24, 2012 at 2:34 AM, Kent Holing <KHO at statoil.com> wrote:
> DayOfWeek[{1975,1,1}]==Wednesday gives True (as it should), but DayOfWeek[{1975,1,1}]==Thursday gives
> Wednesday == Thursday and not False, as it should? Why is it so?
>



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