From: Sebastian Gniazdowski <psprint@zdharma.org>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: "zsh-workers@zsh.org" <zsh-workers@zsh.org>
Subject: Ternary expression in Zsh (was: Feature request – substitutions similar to +, -, :+, :-)
Date: Sun, 3 Dec 2017 10:11:10 +0100 [thread overview]
Message-ID: <etPan.5a23bfae.35a1d3d8.c73c@zdharma.org> (raw)
In-Reply-To: <etPan.5a1950df.46f9693d.c73c@zdharma.org>
On 25 Nov 2017 at 12:15:42, Sebastian Gniazdowski (psprint@zdharma.org) wrote:
> if (VAR) { return "" } else { return "something else" }
Kept the main point of previous messages. New point – it is actually possible to have ternary expression in Zsh:
% var=abc
% echo ${${${(M)var#abc(#e)}:+ternary1}:-ternary2}
ternary1
% var=abcd
% echo ${${${(M)var#abc(#e)}:+ternary1}:-ternary2}
ternary2
It's a one-liner "If val is xyz, then substitute". Pretty neat thing, maybe there are similar tricks possible? I have to implement something and cannot fiddle with this now.
--
Sebastian Gniazdowski
psprint /at/ zdharma.org
next prev parent reply other threads:[~2017-12-03 9:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-18 18:05 Feature request – substitutions similar to +, -, :+, :- Sebastian Gniazdowski
2017-11-18 18:22 ` Sebastian Gniazdowski
2017-11-18 18:46 ` Bart Schaefer
[not found] ` <etPan.5a10805d.57d72d7c.137@AirmailxGenerated.am>
2017-11-25 11:15 ` Sebastian Gniazdowski
2017-12-03 9:11 ` Sebastian Gniazdowski [this message]
2017-12-05 6:55 ` Ternary expression in Zsh (was: Feature request – substitutions similar to +, -, :+, :-) Stephane Chazelas
2017-12-05 8:06 ` Tom M.
2017-12-05 9:04 ` Bart Schaefer
2017-12-05 8:24 ` Sebastian Gniazdowski
2017-12-05 9:05 ` Bart Schaefer
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