THash works like Perl's associative array, i.e., an array indexed by a Key of type string with an associated Value of type Pointer, which means Value is anything that will fit into a Pointer type -- you just need to do the appropriate typecasting.
There is a default hash size (number of buckets) of 17, so you can start adding items right away if you wish. By default, I double the hash size and rebuild it whenever number of items > 2 x number of buckets. The rebuild is
expensive and best avoided by setting an appropriate hash size at the outset. As usual, there's a speed vs. space tradeoff. Note: you can turn off the automatic resize feature by setting AutoGrow to false.
You can add an item or change its value by simply assigning to the hash. (Just like an array) You can delete an item by assigning NIL as its value or use the explicit .Delete method. You can also explicitly add with the Add method. The Add method does not check whether the item already exists so it is slightly faster; it's useful when you are populating the hash at the start. There is also an explicit Delete method.
File List:
hash-readme.txt
5Kb
hash.pas
19Kb
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