Software developmentfromMedium2 weeks agoMap vs FlatMap in Spark with Scala: What Every Data Engineer Should Knowmap preserves one-to-one elements; flatMap flattens collections into zero-to-many elements, changing dataset cardinality and performance across Spark clusters.
JavaScriptfrom2ality2 months agoLearning web development: JavaScript MapsMap stores key-value pairs allowing lookup, insertion, and existence checks, and can use objects as keys with strict (===) identity comparison.