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Articles related to key/value pairs

Storing Key/Value Pairs in Ruby - Structs and OpenStructs - About.com
Storing key/value pairs in Ruby doesn't always need to be accomplished by using a hash. You can also use the Struct and OpenStruct classes.
How to Create and Use Hashes in Ruby - About.com
A hash is useful to store what are called "key/value pairs." A key/value pair has an identifier to signify which variable of the hash you want to access and a ...
Keyword Arguments - Ruby - About.com
Ruby hasn't had keyword arguments, just the ability to have hash key/value pairs exist in the argument list without any hash decoration. But with Ruby 2.0, Ruby ...
Using TDictionary - Hash Tables in Delphi - About.com
Collections unit, represents a generic hash table type collection of key-value pairs. In Delphi, the TDictionary is defined as a hash table. Hash tables represents ...
Perl each() function - Quick Tutorial - About Perl
each HASH Perl's each() function is used to iterate (loop) through the the key / value pairs of a HASH . Each key / value pair is returned as a two-element list.
Using each - Beginning Ruby Tutorial, Control Structures - About Perl
Like the array each method, these elements are placeholders that are used to pass each key / value pair into the code block as Ruby loops through the hash.
NoSQL Introduction - Building Databases for Big Data
They are designed for the rapid, efficient storage of key/value pairs where the application only needs a place to stash data, later retrieving it by the key, and only ...
Hash Reference - Ruby - About.com
Hash#clear - This will delete all key/value pairs, but leave the Hash object itself intact. Why not just assign a new empty Hash object to the variable? What if the ...
Advanced Hash Usage - Ruby - About.com
Inside of curly braces, key/value pairs are separated with arrows (=>, equals and greater than symbols), and the key/value pairs themselves separated with ...
Using JSON: Structure of a JSON Document - Ruby - About.com
There are a few key/value pairs describing the top positions, and key/value pairs with Arrays as the values describing the employees in various departments.
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