Conditional Statements in R: A Deep Dive into Multi-Level Conditions with Switch() Functionality for Efficient Conditional Decision Making

Data Manipulation and Filtering in R: A Case Study on Multiplying Column Values within a Date Range While Replacing Old Values

Conditional Forward Filling in Pandas DataFrame with Custom Conditions

Manipulating Pandas DataFrames with Conditions and GroupBy

Modifying Values in a DataFrame Based on Another Column

Selecting Rows with Given Conditions and Applying Transformations in Pandas Dataframes

Calculating Development Column from Previous Two Columns in SQL Using Window Functions and Conditional Aggregation

Creating a New Dummy Variable Based on Existing Dummy Variable Values in R using dplyr Package

Creating a New Column in a Data Frame Based on Conditions and Values Using lag() + ifelse() in R Programming Language

Pythonic Solution for Extracting Last N Characters of Column and Replacing with Longer Versions in Same Column