22 lines
543 B
Markdown
22 lines
543 B
Markdown
---
|
|
title: check_prop
|
|
tags: function,intermediate
|
|
firstSeen: 2020-01-02T16:49:25+02:00
|
|
lastUpdated: 2020-11-02T19:27:07+02:00
|
|
---
|
|
|
|
Creates a function that will invoke a predicate function for the specified property on a given object.
|
|
|
|
- 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
|
|
```
|