Ruby's ternary: render (if a.exists?; a; else; b; end)
On 04/03/2009, at 10:32 AM, Jordan Fowler wrote: > Stick with whatever you prefer. If you're akin to brevity, go with > tertiary. If you're more concerned with making your code as readable > as possible, go with the formal if else statement. > > -Jordna > > On Mar 3, 2009, at 3:29 PM, Matt Aimonetti wrote: > >> That's actually a good argument for not using the ternary operator :p >> I think i'd go with Kevin's suggestion... stick to what you have, >> it's simple and obvious. >> >> - Matt >> >> On Tue, Mar 3, 2009 at 3:25 PM, David A McClain <[email protected] >> > wrote: >> >> Oh I see, thanks Kevin et al. >> >> You learn something new everyday. Somedays you're lucky enough to >> learn something useful! >> >> >> >> On Mar 3, 2009, at 15:23, Kevin Clark <[email protected]> wrote: >> >> > >> > ? a : b >> > >> > Is from C. It means: (condition) ? (if true) : (if false) >> > >> > (1 + 1 == 2) ? "foo" : "bar" # => "foo" >> > >> > On Tue, Mar 3, 2009 at 3:16 PM, David A McClain <[email protected] >> > > wrote: >> >> I can understand what that code is doing because I know the >> >> context, but >> >> otherwise I'd be lost. >> >> What does the "? a : b" bit actually do? I've never seen the colon >> >> operator. >> >> >> >> >> >> >> >> On Mar 3, 2009, at 14:02, Jordan Fowler <[email protected]> >> wrote: >> >> >> >> I would probably just use tertiary as the argument to render: >> >> render a.exists? ? a : b >> >> -Jordan >> >> On Mar 3, 2009, at 12:59 PM, Guyren G Howe wrote: >> >> >> >> What's the most elegant way to do: >> >> >> >> if a exists >> >> render a >> >> else >> >> render b >> >> end >> >> >> >> ? >> >> >> >> I was going to write a helper that just relies on the exception, >> >> but I >> >> wondered if there was already a concise way to do this. >> >> >> >> >> >> >> >> >> >> >> >> >> >> --------------------------------------------------------------- >> >> Jordan A. Fowler >> >> 2928 Fir St. >> >> San Diego, CA 92102 >> >> E-mail: [email protected] >> >> Website: http://www.jordanfowler.com >> >> Phone: (619) 339-6752 >> >> >> >> >> >> >> >>> >> >> >> > >> > >> > >> > -- >> > Kevin Clark >> > http://glu.ttono.us >> > >> > > >> >> >> >> >> >> > > > > --------------------------------------------------------------- > > Jordan A. Fowler > 2928 Fir St. > San Diego, CA 92102 > E-mail: [email protected] > Website: http://www.jordanfowler.com > Phone: (619) 339-6752 > > > > --~--~---------~--~----~------------~-------~--~----~ SD Ruby mailing list [email protected] http://groups.google.com/group/sdruby -~----------~----~----~----~------~----~------~--~---
