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iOS Developer - Calculate Sum Using Higher-Order Functions Test | Pre-employment assessment - Testlify
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iOS Developer - Calculate Sum Using Higher-Order Functions Test

Overview of iOS Developer - Calculate Sum Using Higher-Order Functions Test

Calculate sum using higher-order functions: write swift code to calculate the sum of elements in an array using higher-order functions like map, filter, and reduce.

Skills measured

  • Swift Programming Language
  • Objective-C
  • Debugging and Performance Optimization

Available in

English

Type

Coding Test


Time

10 Mins


Level

Beginner


Questions

1

Use of iOS Developer - Calculate Sum Using Higher-Order Functions test

The "Calculate Sum Using Higher-Order Functions" coding test is designed for iOS Developers. The task involves writing Swift code to calculate the sum of elements in an array using higher-order functions such as map, filter, and reduce. This test evaluates candidates' proficiency in functional programming concepts and their ability to leverage higher-order functions effectively.

Relevant for

  • Software Engineers
  • Swift Developers
  • iOS Software Engineers
  • iOS Application Developer

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1

Swift Programming Language

In this skill, iOS developers learn how to calculate the sum of an array using higher-order functions in Swift programming language. Higher-order functions like `reduce` allow developers to perform complex operations on arrays with concise and readable code. By mastering this skill, developers can efficiently manipulate data structures and perform calculations without writing lengthy loops. This knowledge is crucial for building efficient and scalable iOS applications that can handle large amounts of data processing.

2

Objective-C

In this skill, iOS developers learn how to calculate the sum of an array using higher-order functions in Objective-C. By mastering this skill, developers can efficiently manipulate and process data in their apps, leading to more concise and readable code. Higher-order functions like map, filter, and reduce allow developers to perform complex operations on collections of data with ease, enhancing the overall functionality and performance of their apps. Understanding and implementing higher-order functions in Objective-C is essential for iOS developers to create robust and efficient applications.

3

Debugging and Performance Optimization

Debugging and Performance Optimization are essential skills for iOS developers when working on projects. Debugging involves identifying and fixing errors in the code, ensuring that the app functions correctly and efficiently. Performance optimization involves improving the speed and efficiency of the app by refining code, reducing memory usage, and optimizing algorithms. These skills are crucial for creating high-quality apps that provide a seamless user experience and run smoothly on various devices. By mastering debugging and performance optimization, iOS developers can deliver reliable and high-performing apps to users.

The iOS Developer - Calculate Sum Using Higher-Order Functions test is created by a subject-matter expert

Testlify’s skill tests are designed by experienced SMEs (subject matter experts). We evaluate these experts based on specific metrics such as expertise, capability, and their market reputation. Prior to being published, each skill test is peer-reviewed by other experts and then calibrated based on insights derived from a significant number of test-takers who are well-versed in that skill area. Our inherent feedback systems and built-in algorithms enable our SMEs to refine our tests continually.

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