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How-to articles, tricks, and solutions about LIST

Accessing the index in 'for' loops

To access the index in a 'for' loop in Python, you can use the built-in 'enumerate' function.

list python loops

Alphabet range in Python

In Python, you can use the string module's ascii_lowercase and ascii_uppercase constants to get the range of lowercase and uppercase letters in the ASCII character set respectively.

string list python alphabet

Append integer to beginning of list in Python

To append an integer to the beginning of a list in Python, you can use the insert() method.

list python prepend

Check if something is (not) in a list in Python

In Python, you can check if an item is in a list using the in keyword.

list python conditional membership

Convert all strings in a list to int

In Python, you can use the map() function along with the built-in int() function to convert all strings in a list to integers.

list integer python

Convert list to array in Java

To convert a List to an array in Java, you can use the toArray() method of the List interface. This method returns an array containing all of the elements in the list in the proper order.

java list arrays arraylist

Convert Set to List without creating new List

To convert a Set to a List in Java without creating a new List object, you can use the List constructor that takes a Collection as an argument.

java list set performance

Converting Dictionary to List?

In Python, you can convert a dictionary to a list of its keys or values using the keys() and values() methods, respectively.

list python dictionary

Create an empty list with certain size in Python

You can create an empty list of a certain size in Python using the following methods:

list python

Difference between del, remove, and pop on lists

del: The del keyword is used to remove an item from a list by its index.

list python