Python Round: A Step-By-Step Guide
The Python round() method rounds a number to a specified number of decimal places. By default, round() rounds a number to zero decimal places. round() is useful if you want to work with numbers with a certain precision. You may…
Python Bubble Sort: A How-To Guide
A Python bubble sort goes through a list and compares elements next to each other. If an element on the right is greater than one on the left, the elements are swapped. This happens until the list is sorted. Do…
Python args and kwargs: A Guide
Both Python *args and **kwargs let you pass a variable number of arguments into a function. *args arguments have no keywords whereas **kwargs arguments each are associated with a keyword. Traditionally, when you’re working with functions in Python, you need…
Python Main Functions: A How-To Guide
The Python main() method contains the methods and code you want to execute in a main program. It is not necessary because Python runs code line-by-line but the main() method helps make code more readable. How to Use Python Main…
Python Try Except: A Step-By-Step Guide
The Python try...except statement catches an exception. It is used to test code for an error which is written in the "try" statement. If an error is encountered, the contents of the "except" block are run. How to Use Try…
Python Super: A How-To Guide
The Python super() method lets you access methods from a parent class from within a child class. This helps reduce repetition in your code. super() does not accept any arguments. One core feature of object-oriented programming languages like Python is…
A Step-By-Step Guide to Python Count
The Python count() method calculates how many times a particular element appears in a list or a string. count() accepts one argument: the value for which you want to search in the list. The count() method is appended to the…
JavaScript Onclick: A Step-By-Step Guide
The JavaScript onclick event executes a function when a user clicks a button or another web element. This method is used both inline in an HTML document and in a JavaScript document. When you are coding in JavaScript, it’s common…
JavaScript ParseInt: A Step-By-Step Guide
The JavaScript parseInt method reads a string or a float and converts it to an integer. This method is commonly used to prepare a string for a mathematical operation because strings cannot be treated like numbers in a math equation.…
Insertion Sort in Java: A How-To Guide
A Java insertion sort evaluates each item in a list. If an item is less than the one before, the sort swaps the items. Otherwise, the items stay in the same place and the next two items are compared in…
Python Priority Queue: A Guide
Python Priority Queue: A Guide A Python priority queue stores data in a particular order. There are two ways to implement a priority queue in Python: using the queue class and using the heapq module. You may want to order…
HTML Footer: A Step-by-Step Guide
The HTML footer tag defines the footer for a web page or a section. Footers usually contain contact information, links to important pages on a website, and the author of a web page. When you’re building a web page, you…
Git Diff: A How-To Guide
The git diff command shows the differences between the files in two commits or between your current repository and a previous commit. This command displays changes denotes by headers and metadata for the files that have changed. When you’re working…
How to Set Up Git Using git config
How to Set Up Git Using git config The git config command changes the configuration options in your Git installation. It is often used to set your Git email, editor, and any aliases you want to use with the git…
Learn to Sort ArrayList in Java
The Collections.sort() method sorts a Java ArrayList in ascending order. Collections.reverse() reverses the order of a Java ArrayList. You need to import the Java Collections package to use these methods. How to Sort an ArrayList in Java You may encounter…
How to Use the Java continue Statement
The Java continue statement stops one iteration in a loop and continues to the next iteration. This statement lets you skip particular iterations without stopping a loop entirely. Continue statements work in for and while loops. Java for and while…
Iterate Through Dictionary Python: Step-By-Step Guide
The items() method, the keys() method, and the values() method return values you can use to iterate through a dictionary in Python. items() returns both the keys and values in a Python dictionary. keys() returns the keys in a dictionary.…
How to Delete a Directory in Linux
You can delete a directory in Linux using the rm command. The rm command can delete a directory if it contains files as long as you use the -r flag. If a directory is empty, you can delete it using…
How to Use the git amend Command
Git commit amend: A Beginner’s Guide The git commit --amend command lets you modify your last commit. You can change your log message and the files that appear in the commit. The old commit is replaced with a new commit…
How to Create a Hyperlink in HTML
A HTML hyperlink lets you navigate to a different page. An <a> tag defines an anchor. The "href" attribute specifies the location a user will be taken to when they click the link. Between the <a> and closing </> tags…
JavaScript String Interpolation: A Beginner’s Guide
JavaScript string interpolation is the process of embedding an expression into part of a string. A template literal is used to embed expressions. You can add values such as variables and mathematical calculations into a string using interpolation. Do you…
Python f Strings: The Ultimate Guide
Python f strings embed expressions into a string. An expression may be the contents of a variable or the result of a mathematical calculation, or another Python value. f strings are distinguished from regular strings as the letter f comes…
Python: Check If a File Exists
The Python os.path.isdir() method checks if a directory exists. os.path.isfile() checks whether a file exists. Both of these methods are part of the Python os library. Checking whether a certain file or directory exists has a number of uses in…
Python Min and Max: The Ultimate Guide
The Python max() function is used to find the largest value in a list of values. The Python min() function is used to find the lowest value in a list. The list of values can contain either strings or numbers.…
How to Convert a Java String to Char Array
The toCharArray() method converts a string to a char array in Java. This method lets you manipulate individual characters in a string as list items. Spaces, numbers, letters, and other characters are all added to the char array. When coding,…
Git: List Remote Branches
You can list the remote branches associated with a repository using the git branch -r, the git branch -a command or the git remote show command. To see local branches, use the git branch command. The git branch command lets…
Python os.path.join: A Beginner’s Guide
The Python os.path.join method combines one or more path names into a single path. This method is often used with os methods like os.walk() to create the final path for a file or folder. os.path.join() automatically adds any required forward…
How to Declare a List in Python
To initialize a list in Python assign one with square brackets, initialize with the list() function, create an empty list with multiplication, or use a list comprehension. The most common way to declare a list in Python is to use…
How to Remove Duplicates from a List in Python
You can remove duplicates from a Python using the dict.fromkeys(), which generates a dictionary that removes any duplicate values. You can also convert a list to a set. You must convert the dictionary or set back into a list to…
How to Change a Git Remote
You can change a Git remote URL using the git remote set-url command. Navigate to the repository whose remote URL you want to change and then execute this command. The set-url command accepts two arguments: the remote name and the…
