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Re: Are two symbols `equal' iff they are `eq'?
From: |
Joost Kremers |
Subject: |
Re: Are two symbols `equal' iff they are `eq'? |
Date: |
9 Aug 2015 00:31:08 GMT |
User-agent: |
slrn/pre1.0.0-18 (Linux) |
Marcin Borkowski wrote:
> As in the subject; neither the manual nor the docstring for `equal' are
> very clear on this. (The docstring for `equal' says: "Symbols must
> match exactly.", which -- I would guess -- means `eq', but I'm not
> sure.)
Quoting the description of `equal` in the Elips manual:
,----
| -- Function: equal object1 object2
| This function returns `t' if OBJECT1 and OBJECT2 have equal
| components, and `nil' otherwise. Whereas `eq' tests if its
| arguments are the same object, `equal' looks inside nonidentical
| arguments to see if their elements or contents are the same. So,
| if two objects are `eq', they are `equal', but the converse is not
| always true.
`----
(info "(elisp) Equality Predicates")
Seems to me to be very clear: objects can be `equal` without being `eq`.
(But they cannot be `eq` if they're not `equal`.)
--
Joost Kremers address@hidden
Selbst in die Unterwelt dringt durch Spalten Licht
EN:SiS(9)
- Are two symbols `equal' iff they are `eq'?, Marcin Borkowski, 2015/08/08
- Re: Are two symbols `equal' iff they are `eq'?,
Joost Kremers <=
- Re: Are two symbols `equal' iff they are `eq'?, Ian Zimmerman, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Marcin Borkowski, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Michael Heerdegen, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Marcin Borkowski, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Eli Zaretskii, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Marcin Borkowski, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Eli Zaretskii, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Marcin Borkowski, 2015/08/09
- Re: Are two symbols `equal' iff they are `eq'?, Nicolas Richard, 2015/08/10
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