clear perl hash variable

himanshu.padmanabhi has asked for the wisdom of the Perl Monks concerning the following question:

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Re: clear perl hash variable by derby (Abbot) on Mar 04, 2009 at 12:09 UTC
himanshu.padmanabhi, you're post is confusing. Take a look at How do I post a question effectively?. Taken as it's written, what you're asking is odd - since the Javascript is client-side (browser) and perl is server-side (web server) and the two normally do not run together in the same process -- unless you have some funky Inline thing happening or you're doing something wild like using Javascript to create perl code. -derby	[reply]
Re^2: clear perl hash variable by massa (Hermit) on Mar 04, 2009 at 14:36 UTC
And, anyway, `%hash = {}` does not do what himanshu.padmanabhi think it does. To clear a hash in perl, we do: `%hash = ()` [download] or `undef %hash` [download] or, if `$hash` is a hash reference, `%$hash = ()` [download] or, somewhat similarly but not exactly the same, `$hash = {}` [download] or, also somewhat similarly but not exactly the same, `undef $hash` [download] []s, HTH, Massa (κς,πμ,πλ)	[reply] [d/l] [select]
Re: clear perl hash variable by rovf (Priest) on Mar 04, 2009 at 12:03 UTC
I would do it similar: `hash={};` [download] -- Ronald Fischer <ynnor@mm.st>	[reply] [d/l]
Re^2: clear perl hash variable by derby (Abbot) on Mar 04, 2009 at 12:10 UTC
That's how you would clear a Javascript object (which may be what the OP is after, who knows) but not a perl hash in Javascript. -derby	[reply]
Re^3: clear perl hash variable by rovf (Priest) on Mar 04, 2009 at 13:12 UTC
From what I've learned, this amounts to the same. If you just use `x=new Object` [download] you can already use it as associative array in Javascript.: `x['foo']='bar' </p> I just find the syntax <c> x={}` [download] nicer. See for instance http://www.quirksmode.org/js/associative.html. -- Ronald Fischer <ynnor@mm.st>	[reply] [d/l] [select]