Raissa K.
@raissa
Ah, a tale as old as time: teacher turned coder. If only I'd learned sooner that my previous career would have left me with so many transferrable skills!
Brazil / Estonia
Joined on
Sep 26, 2022
6
posts
1
followers
7
following
Understanding NullReferenceException and How to Fix It
In C#, a NullReferenceException is a common runtime exception that occurs when you attempt to access or call a member (property, method, or field) of...
Iterating over Rows in a DataFrame in Pandas
In Pandas, you can iterate over rows in a DataFrame using various methods. Each row in a DataFrame is represented as a Series, and there are different...
Checking if an Item Exists in an List or Tuple
In Elixir, you can determine if an item exists in a list or tuple using various built-in functions. Checking for the presence of an item is a common o...
Getting the First Element of an Array in PHP
In PHP, you can retrieve the first element of an array using several methods.
Using array_shift() Function
The array_shift() Function
The array_shift(...
Preventing SQL Injection in PHP
SQL injection is a serious security vulnerability that occurs when untrusted data is inserted into a SQL query, allowing attackers to manipulate the q...
Setting Focus on an Input Field After Rendering
In React, you can programmatically set the focus on an input field after it has been rendered on the screen.
#1. Using the useRef Hook
The useRef hook...
