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How do you sort an associative array in bash?
The best way to sort a bash associative array by VALUE is to NOT sort it. Instead, get the list of VALUE:::KEYS, sort that list into a new KEY LIST, and iterate through the list.
How do you clear an array in bash?
How to remove a key from a Bash Array or delete the full array? (delete) The unset bash builtin command is used to unset (delete or remove) any values and attributes from a shell variable or function. This means that you can simply use it to delete a Bash array in full or only remove part of it by specifying the key.
How to sort an associative array by key in Bash?
The best way to sort a bash associative array by KEY is to NOT sort it. Instead, get the list of KEYS, sort that list as a variable, and iterate through the list. Example: Suppose you have an array of IP addresses (keys) and host names (values):
How to get a sorted list of keys in zsh?
In zsh, you can get a sorted list of the keys of an associated array ( $ { (kOn)A}) or of the values ( $ { (On)A}) but not directly a list of keys from the sorted list of values (AFAIK), but you could do things like:
What are the advantages of using zsh over Bash 3?
One of the advantages of zsh over bash 3 is the support of “associative arrays,” a data structure known as hash tables or dictionaries in other languages. In associative arrays, you can store a piece of data, or value with an identifying ‘key’. For example, the associative array userinfo has multiple values, each identified with a key:
What can you do with associative arrays in zsh?
You can also use this to loop through all the keys and values of an associated array: Associative arrays have their uses, but are not as powerful as dictionaries in more powerful languages. In zsh, you cannot nest associative arrays in normal arrays, which limits their use for complex data structures.