In Perl to perform a hash update based on arrays of keys and values I can do something like: @hash{\'key1\',\'key2\',\'key3\'} = (\'val1\',\'v开发者_运维技巧al2\',\'val3\');
It seems that Perl can only have strings as the keys of a hash.(Has this been changed in a certain version of Perl?)It is very limiting to only be able to use strings as the key.What if I wanted an ob
Is there a correct way of testing开发者_如何学运维 if a particular hash key has already been assigned any value, even if this value is zero? I have been working with a statement like this:
I have a system which keeps all actions of a user in the database. The problem is that now I can track which data belongs to which user. How to make users not identifiable in the database?
I 开发者_StackOverflow中文版am trying to print out my Hash Keys in Perl, one per line. How would I go about doing this?Does this do it for you?
I accidentally saved a Ruby hash to string in Ruby 1.9 by calling my_hash.to_s which is equal to my_hash.inspect. This gave me a string like this:
While debuging my site, I found o开发者_高级运维ut that: /* SOME my-web.com/index/#hash HERE... */
Why does the Hashcode of an Object change in Java? Does it change at all? How is it related to Hashtable ?
The actual problem I was originally doing was converting a hash of arrays into an array of hashes. If anyone has any comments on doing the conversion then that\'s fine but the actual question I have i
I read some blog and tutorial on Tries , hashing, Map(stl) and BST. I am very confused in which one is better to use and where. I know that to make such difference between them开发者_如何学Go are nons
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