kvlookup

The kvlookup module implements a single procedure, kvlookup, that provides flexible lookup for keys in key-value structures like arrays and dictionaries.

Load this with:

package require kvlookup

kvlookup ?-default default? (-array var | -var var | dict) key

The options are as follows:

• -default default — return the value default instead of an error if the key is not found.
• -array var — look up in the array named var.
• -var var — look up in the dictionary or array (auto-detected) named var.
• dict — look up in the provided dictionary value.
• key — the key to retrieve.

Future versions of this will support nested key retrieval.