Go Channel Communication

Background

Channels are Go concurrency primitive for safe data passing between goroutines, following CSP principles.

Problem

Write a Go function that uses a channel to pipeline data through a filter and transformer stage concurrently.

Input

A slice of integers to process through the pipeline.

Output

A slice of transformed and filtered integers.

Sample tests

Input: [1, -2, 3, -4, 5]

Expected: [2, 6, 10]

Your solution

Learning objective

Learn channel creation, closing, range-over-channel, and pipeline patterns.