--- title: function_name tags: utility,intermediate --- Given a predicate function, `fn`, and a `prop` string, this curried function will then take an object to inspect by calling the property and passing it to the predicate. Return a `lambda` function that takes an object and applies the predicate function, `fn` to the specified property. ```py def check_prop(fn, prop): return lambda obj: fn(obj[prop]) ``` ```py check_age = check_prop(lambda x: x >= 18, 'age') user = {'name': 'Mark', 'age': 18} check_age(user) # True ```