SWI-Prolog -- get_assoc/3

Documentation
- Reference manual
  - The SWI-Prolog library
    - library(assoc): Association lists
      - Querying association lists
        
        get_assoc/3
        
        get_assoc/5
        
        max_assoc/3
        
        min_assoc/3
        
        gen_assoc/3
- Packages

Availability::- use_module(library(assoc)).(can be autoloaded)

Source

[semidet]get_assoc(+Key, +Assoc, -Value)

True if Key-Value is an association in Assoc.

Errors: type_error(assoc, Assoc) if Assoc is not an association list.