Filter
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What is Filter?
The filter method in Scala collections lets you pick out the elements you want based on a condition. You give it a function that takes an element and returns true if you want to keep it, and false if you want to discard it. The filter method then returns a new collection containing only the elements for which the function returned true.
Free resources to learn Filter
More in stage 9: Working with Strings
Filter: common questions
Can I learn Filter in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Filter in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Filter tutorial for beginners?
It is lesson 46 of 165 in the free Scala roadmap, in stage 9, Working with Strings. If you are new to Scala, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.