Revisiting Scala Maps and Their Practical Application

Computer Programming

Deepen your understanding and use of map data structures in Scala, focusing on their application in counting and aggregation. This course will strengthen your comprehension of efficient data access and manipulation using maps.

Scala

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4 lessons

20 practices

4 hours

Course details

Introduction to HashMaps in Scala

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Update Library Catalog Title

Print the Book Title Using Maps in Scala

Check Book Availability in Library Catalog

Updating and Accessing Elements in Scala Maps

Understanding Scala Maps by Updating a Library Catalog

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11