Merge pull request #195 from 30-seconds/tag-update

Cleanup utility and object tags
This commit is contained in:
Angelos Chalaris
2020-04-07 20:02:42 +03:00
committed by GitHub
9 changed files with 32 additions and 33 deletions

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@ -1,6 +1,6 @@
--- ---
title: cast_list title: cast_list
tags: utility,list,beginner tags: list,beginner
--- ---
Casts the provided value as a list if it's not one. Casts the provided value as a list if it's not one.

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@ -1,6 +1,6 @@
--- ---
title: function_name title: check_prop
tags: utility,intermediate tags: function,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. 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.

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@ -1,11 +1,11 @@
--- ---
title: group_by title: group_by
tags: list,object,intermediate tags: list,dictionary,intermediate
--- ---
Groups the elements of a list based on the given function. Groups the elements of a list based on the given function.
Use `map()` and `fn` to map the values of the list to the keys of an object. Use `map()` and `fn` to map the values of the list to the keys of a dictionary.
Use list comprehension to map each element to the appropriate `key`. Use list comprehension to map each element to the appropriate `key`.
```py ```py

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@ -1,6 +1,6 @@
--- ---
title: keys_only title: keys_only
tags: object,list,beginner tags: dictionary,list,beginner
--- ---
Returns a flat list of all the keys in a flat dictionary. Returns a flat list of all the keys in a flat dictionary.

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@ -1,6 +1,6 @@
--- ---
title: longest_item title: longest_item
tags: list,string,utility,intermediate tags: list,string,intermediate
--- ---
Takes any number of iterable objects or objects with a length property and returns the longest one. Takes any number of iterable objects or objects with a length property and returns the longest one.

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--- ---
title: map_object title: map_dictionary
tags: list,intermediate tags: list,intermediate
--- ---
Maps the values of a list to a dictionary using a function, where the key-value pairs consist of the original value as the key and the result of the function as the value. Maps the values of a list to a dictionary using a function, where the key-value pairs consist of the original value as the key and the result of the function as the value.
Use a `for` loop to iterate over the list's values, assigning the values produced by `fn` to each key of the dictionary. Use a `for` loop to iterate over the list's values, assigning the values produced by `fn` to each key of the dictionary.
```py ```py
def map_object(itr, fn): def map_dictionary(itr, fn):
ret = {} ret = {}
for x in itr: for x in itr:
ret[x] = fn(x) ret[x] = fn(x)
@ -17,5 +16,5 @@ def map_object(itr, fn):
``` ```
```py ```py
map_object([1,2,3], lambda x: x * x) # { 1: 1, 2: 4, 3: 9 } map_dictionary([1,2,3], lambda x: x * x) # { 1: 1, 2: 4, 3: 9 }
``` ```

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--- ---
title: map_values title: map_values
tags: object,function,intermediate tags: dictionary,function,intermediate
--- ---
Creates an object with the same keys as the provided object and values generated by running the provided function for each value. Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value.
Use `dict.keys()` to iterate over the object's keys, assigning the values produced by `fn` to each key of a new object. Use `dict.keys()` to iterate over the dictionary's keys, assigning the values produced by `fn` to each key of a new dictionary.
```py ```py
def map_values(obj, fn): def map_values(obj, fn):

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--- ---
title: spread title: spread
tags: list,utility,intermediate tags: list,intermediate
--- ---
Flattens a list, by spreading its elements into a new list. Flattens a list, by spreading its elements into a new list.

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--- ---
title: values_only title: values_only
tags: object,list,beginner tags: dictionary,list,beginner
--- ---
Returns a flat list of all the values in a flat dictionary. Returns a flat list of all the values in a flat dictionary.