In Python, the if __name__ == “__main__”: construct is used to control code execution when a Python file is run … What does ‘if __name__ == “__main__”:’ do in Python?Read more
Differences between a HashMap and a Hashtable in Java?
Here are the key differences between HashMap and Hashtable in Java: 1. Thread Safety & Synchronization 2. Null Keys/Values 3. … Differences between a HashMap and a Hashtable in Java?Read more
Is Java “pass-by-reference” or “pass-by-value”?
Java is strictly pass-by-value. However, the behavior can be confusing when dealing with objects. Here’s a breakdown: … Is Java “pass-by-reference” or “pass-by-value”?Read more
How to import an SQL file using the command line in MySQL?
To import an SQL file into MySQL using the command line, follow these steps: Step-by-Step Guide … How to import an SQL file using the command line in MySQL?Read more
How to rename column names in Pandas?
To rename column names in a Pandas DataFrame, you can use the following methods: 1. Rename … How to rename column names in Pandas?Read more
How do I select rows from a DataFrame based on column values?
In Pandas, you can select rows from a DataFrame based on column values using Boolean indexing, the query() method, … How do I select rows from a DataFrame based on column values?Read more
How can I iterate over rows in a Pandas DataFrame?
In Pandas, iterating over rows in a DataFrame can be done using several methods, but vectorized operations … How can I iterate over rows in a Pandas DataFrame?Read more
Should we use the datetime or timestamp data type in MySQL?
In MySQL, choosing between DATETIME and TIMESTAMP depends on your specific requirements for date range, time zone handling, and storage efficiency. Here’s a … Should we use the datetime or timestamp data type in MySQL?Read more
What does the “yield” keyword do in Python?
In Python, the yield keyword is used to create a generator function, which produces a sequence of values lazily … What does the “yield” keyword do in Python?Read more
How to prevent SQL injection in PHP?
To prevent SQL injection in PHP, follow these best practices: 1. Use Prepared Statements with Parameterized … How to prevent SQL injection in PHP?Read more