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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...
![Iterating over Rows in a DataFrame in Pandas](https://tiloid.com/uploads/posts/82/Lc1zQYiBZK7cXnSQI1x1n9B1p4Grug-metaY2FyYm9uKDgxKS5wbmc=-.png)
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...
![Checking if an Item Exists in an List or Tuple](https://tiloid.com/uploads/posts/63/cJjTv8DCnVGgXNFWqt8LQ6PvEiX3O9-metaY2FyYm9uKDYxKS5wbmc=-.png)
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(...
![Getting the First Element of an Array in PHP](https://tiloid.com/uploads/posts/36/UDgCDRnRToP1R7mj68PY2AhfWXlQUi-metaY2FyYm9uKDM0KS5wbmc=-.png)
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...
![Preventing SQL Injection in PHP](https://tiloid.com/uploads/posts/69/MwZ8r0s8sVV06M1hzbZk6fJ8gwZbSR-metaY2FyYm9uKDY4KS5wbmc=-.png)
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...
![Setting Focus on an Input Field After Rendering](https://tiloid.com/uploads/posts/100/W92xmJxxEYg6QbPUgrSwctUMMx7va1-metaY2FyYm9uKDEwMCkucG5n-.png)