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Dicts
c
go
java
js
lua
py
vbs
rkt
scm
pro
1. Dicts
2. Dictionary
A dict, or dictionary, or hash table, is a set of strings that index or hash to a value.
Many programming languages provide a way to hard-code a dict within a program.
Some of these ways are now presented along with a way to output the list from beginning to end.
3. Hash tables
A hash table is a table that is hashed.
A hash is a mapping of one value of a potentially large set of values to another value of a limited set of values.
The hash function should be fast and spread the values somewhat randomly over a limited range of values.
If there are not many collisions (two values mapping to the same hash value), then quick lookups can be performed.
4. Associative arrays
A hash table, or dictionary, is sometimes called an associative array.
An array can be simulated with a hash table. How?
Most programming languages have some form of hash table support. Sometimes it is built into the language. Sometimes is is via library routines.
5. JavaScript code
Here is the JavaScript code.
6. JavaScript output
Here is the output of the JavaScript code.
7. Lua code
Here is the Lua code.
8. Lua output
Here is the output of the Lua code.
9. PHP code
Here is the PHP code.
10. PHP output
Here is the output of the PHP code.
11. Python code
Here is the Python code.
12. Python output
Here is the output of the Python code.
13. End of page