BootSelf
Check my readiness
kotlin

Filtering elements in collection

1 role need it, 1 as coreUsually level 3: WorkingLesson available

Where it sits

Learn first

Nothing: a good place to start.

This skill

Filtering elements in collection

Leads to

SequencesGrouping collections

Jobs that need it

What level 3 (Working) means

Uses it independently on the job. Level 4 (Strong): handles hard cases, reviews others.

Start learning

Filtering elements in collection

Operations with collections

about 8 min5 parts

Open the lesson

Find out where you stand

A free check, then a route that starts at your level.

Check my readiness

Learned alongside it

Abstract classesAdditional librariesAggregate operations on collectionsAggregate operations on collections: part 2AndroidAndroid CoreAndroid JetpackAndroid studio basics

Filtering elements in collection: common questions

What is Filtering elements in collection?

Filtering elements in collection is a skill in kotlin, needed by 1 role on BootSelf.

Which jobs need Filtering elements in collection?

Android Developer. Most ask for level 3 (Working): uses it independently on the job.

What should I learn before Filtering elements in collection?

Nothing in particular: it's a good place to start.

How long does it take to learn Filtering elements in collection?

The starting lesson, Filtering elements in collection, takes about 8 minutes. Reaching the level a job asks for takes practice on top: BootSelf measures where you are and plans the rest.

How do I practise Filtering elements in collection?

Check your readiness for free, then BootSelf builds a route and short daily learning loops: a little theory, checks on what you get wrong, then a small program.