Re^2: can i concatenate various value to form a unique key

Hi, I am planning to have a hash like

   %hash = {g1 => [start_date1,end_date2]
            g2 => [start_date1,end_date2]
};
[download]

but i dont have a unique value of g1 and g2.. i will get unique value with combination of some values like value1 value2 value3 ..value5 so i planned to derive g with concatenation of these values assuming that a hash cannot have mutiple values of as a key. I thik the background is explained better now.

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Re^3: can i concatenate various value to form a unique key by Marshall (Canon) on Jul 03, 2009 at 10:41 UTC
At the risk of getting into more trouble in this thread, I do not think that this will work out well for you. There can be very good reasons to concatenate strings into a single hash key, but once we are talking about 5 FIVE dimensions, this doesn't make sense. I apologize for not reading this thread carefully from the beginning. sounds like you need an Array of Hash. `each hash like: start => "some start date", end => "some end date", parm1 => "some data1", parm2 => "some data2", parm3 => "some data3",` [download]	[reply] [d/l]
Re^3: can i concatenate various value to form a unique key by citromatik (Curate) on Jul 03, 2009 at 10:34 UTC
Maybe I am wrong, but contrary to the others who have replied already, I think you are misinterpreting your problem (sorry if I misinterpreted you! :). Do you want the following: `%hash = ( g1 => [value1, value2, value3], g2 => [value4, value5, value6...] );` [download] i.e. do you want each key to have multiple values associated? If this is the case you need a reference to an array containing all the values (see perlref). You already have that situation in the example you give: `g1 => [$start_date1,$end_date1]`, so, to concatenate more values, you will need a reference to an AoA (array of arrays). Again, sorry if I totally misinterpreted your problem, but if you think I am close, let me know and we will elaborate it a little more citromatik	[reply] [d/l] [select]
Re^4: can i concatenate various value to form a unique key by Anonymous Monk on Jul 03, 2009 at 10:42 UTC
i think i am bad in explaining :( my actaul issue with mutiple keys not values.. value i am laready refering to array. But to get that hash value array i need a key which is combination of various values. so i am stucked ....	[reply]
Re^5: can i concatenate various value to form a unique key by citromatik (Curate) on Jul 03, 2009 at 10:59 UTC
Like Marshall says, I think you want another data structure/strategy, you may get more helpful comments if you explain how did you run into this and give a wider view of your problem. citromatik	[reply]