23 lines
565 B
Markdown
23 lines
565 B
Markdown
---
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title: Check property
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tags: function
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expertise: intermediate
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firstSeen: 2020-01-02T16:49:25+02:00
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lastUpdated: 2020-11-02T19:27:07+02:00
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---
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Creates a function that will invoke a predicate function for the specified property on a given dictionary.
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- Return a `lambda` function that takes a dictionary and applies the predicate function, `fn` to the specified property.
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```py
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def check_prop(fn, prop):
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return lambda obj: fn(obj[prop])
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```
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```py
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check_age = check_prop(lambda x: x >= 18, 'age')
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user = {'name': 'Mark', 'age': 18}
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check_age(user) # True
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```
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