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From: Juanma Barranquero <lekktu@gmail.com>
To: ishi soichi <soichi777@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: build-in function for obtaining the index of an element of a list
Date: Wed, 4 Jan 2012 13:51:25 +0100	[thread overview]
Message-ID: <CAAeL0STa=f07Re2WyaxRh39GSP7eXgsMFmh+oxZrZYVRLQoOPQ@mail.gmail.com> (raw)
In-Reply-To: <CAEjRLuR0g2wRvhPdt2vGmU4uT6Zn1N9fL_u_Dk1Z3E7FT9EcXQ@mail.gmail.com>

> Is there any Emacs built-in function that returns the index of an element of
> a list?

If you don't mind using the CL package (included with Emacs), the
function you want is `position'

 (position "banana" '("apple" "banana" "orange") :test 'string=)   =>  1

    Juanma



  reply	other threads:[~2012-01-04 12:51 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-04  6:33 build-in function for obtaining the index of an element of a list ishi soichi
2012-01-04 12:51 ` Juanma Barranquero [this message]
2012-01-04 23:52   ` ishi soichi

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