How-to articles, tricks, and solutions about DICTIONARY
Check if a given key already exists in a dictionary
To check if a given key already exists in a dictionary, you can use the in keyword.
Convert a JSON String to a HashMap
Here is an example of how you can convert a JSON string to a HashMap in Java:
Convert list of dictionaries to a pandas DataFrame
Here is an example of how to convert a list of dictionaries to a pandas DataFrame:
Create a dictionary with comprehension
To create a dictionary using comprehension in Python, you can use the following syntax:
Delete an element from a dictionary
To delete an element from a dictionary in Python, you can use the del statement.
Determine the type of an object?
To determine the type of an object in Python, you can use the type function.
How can I get list of values from dict?
You can use the values() method to get a list of values from a dictionary:
How can I remove a key from a Python dictionary?
You can use the del statement to remove a key-value pair from a dictionary in Python.
How do I efficiently iterate over each entry in a Java Map?
There are several ways to iterate over the entries in a Map in Java. Here are some options:
How do I print the key-value pairs of a dictionary in python
You can use the items() method to print the key-value pairs of a dictionary in Python.
How do I sort a dictionary by key?
In Python, dictionaries are unordered collections of key-value pairs.