From: Tom Wijsman <TomWij@gentoo.org>
To: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] evar_push/pop helpers
Date: Sun, 2 Jun 2013 09:33:36 +0200 [thread overview]
Message-ID: <20130602093336.70c17b51@TOMWIJ-GENTOO> (raw)
In-Reply-To: <201306020309.31841.vapier@gentoo.org>
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On Sun, 2 Jun 2013 03:09:31 -0400
Mike Frysinger <vapier@gentoo.org> wrote:
> there's no way to undo the local thus it affects the rest of the
> func. this makes sure the change is actually localized to where it
> is needed. -mike
In other languages you can freely introduce local scopes { ... }, this
isn't possible in Bash since a local corresponds to a function; but
it's not really that hard to replicate, now consider this instead:
test()
{
local test="FUNCTION"
echo ${test}
x(){
local test="LOCAL SCOPE 1"
echo ${test}
};x
echo ${test}
x(){
local test="LOCAL SCOPE 2"
echo ${test}
};x
echo ${test}
}
test
Now 'x' is vague, you could replace 'x' by a name documenting the scope.
I consider this to be more clean than using a variable to remember it,
especially when multiple local scopes are to be used after each other.
--
With kind regards,
Tom Wijsman (TomWij)
Gentoo Developer
E-mail address : TomWij@gentoo.org
GPG Public Key : 6D34E57D
GPG Fingerprint : C165 AF18 AB4C 400B C3D2 ABF0 95B2 1FCD 6D34 E57D
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next prev parent reply other threads:[~2013-06-02 7:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-02 3:03 [gentoo-dev] evar_push/pop helpers Mike Frysinger
2013-06-02 6:51 ` Michał Górny
2013-06-02 7:09 ` Mike Frysinger
2013-06-02 7:16 ` Michał Górny
2013-06-02 7:29 ` Mike Frysinger
2013-06-02 7:48 ` Tom Wijsman
2013-06-17 5:45 ` Mike Frysinger
2013-06-02 8:39 ` Michał Górny
2013-06-02 15:40 ` Mike Frysinger
2013-06-02 15:57 ` Andreas K. Huettel
2013-06-02 7:33 ` Tom Wijsman [this message]
2013-06-02 17:38 ` [gentoo-dev] " Steven J. Long
2013-06-17 5:42 ` Mike Frysinger
2013-06-17 16:06 ` Mike Frysinger
2013-06-17 5:46 ` [gentoo-dev] " Mike Frysinger
2013-06-17 17:51 ` Greg KH
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