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Sequence Builder

Explore how Kotlin's sequence builder leverages coroutines to generate data lazily and efficiently. Understand how suspension allows the function to pause and resume, enabling on-demand creation of sequence elements without heavy resource costs. This lesson clarifies the use of yield inside a lambda with receiver, emphasizing memory efficiency and infinite sequence capabilities.

We'll cover the following...

In some other languages, like Python or JavaScript, we can find structures that use limited forms of coroutines:

  • Async functions (also called async/await).

  • Generator functions (functions in which subsequent values are yielded).

We’ve already seen how we can use async in Kotlin, but this will be explained in detail in the "Coroutine Builders" part of the course. Instead of generators, Kotlin provides a sequence builder—a function used to create a sequence. Even better, it offers flow builders. The ...