Path: csiph.com!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail
From: Carlos <carlos@cvkm.cz>
Newsgroups: comp.lang.postscript
Subject: Re: =?UTF-8?B?YmluZOKAmWluZw==?= loops
Date: Tue, 21 Nov 2017 21:34:55 +0100
Organization: A noiseless patient Spider
Lines: 29
Message-ID: <20171121213455.423a2bee@samara.DOMA>
References: <0a457d13-e123-42e2-9a2f-f1801af3db2c@googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Injection-Info: reader02.eternal-september.org; posting-host="5f9a622bb99476dd792e9ccb4050154d"; logging-data="22630"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1+SF0da7VG8mCzAwtd+eWyboPzwJAXcU8A="
X-Newsreader: Claws Mail 3.15.1-dirty (GTK+ 2.24.31; x86_64-pc-linux-gnu)
Cancel-Lock: sha1:9hIG0fI8oFPii1n/IPP85bf/Wz4=
Xref: csiph.com comp.lang.postscript:3199

[jdaw1 <jdawiseman@gmail.com>, 2017-11-20 04:26]
> Much PostScript code includes pieces resembling =E2=80=9C/=E2=80=A6 {=E2=
=80=A6} bind def=E2=80=9D. Very
> standard.
>=20
> Rarely do I use =E2=80=9C=E2=80=A6 {=E2=80=A6} bind forall=E2=80=9D, and =
likewise =E2=80=9C=E2=80=A6 {=E2=80=A6} bind repeat=E2=80=9D and =E2=80=9C=
=E2=80=A6
> =E2=80=A6 =E2=80=A6 {=E2=80=A6} bind for=E2=80=9D. Is this just me? Are y=
ou folks all enthusiastic bind=E2=80=99ers
> of loops?
>=20
> Let=E2=80=99s be specific. Would you bind:=20
>=20
> true
> [ /showpage /setcolorspace /setcolorspace /setgray /setrgbcolor /sethsbco=
lor /setcmykcolor /setpattern /setcolor /image /imagemask ]
> {load type /operatortype ne {pop //false exit} if} forall
>=20
> ?

If I have a loop at top level, its body is almost never more complicated th=
an
a couple of gsave/grestore, a call to a named proc that does the work, and
maybe a showpage. I don't bind them (but the proc that does the work is usu=
ally
bound, and, of course, therefore also the loop bodies in it).
--=20