https://github.com/fancellu/fs2-examples

A few fs2 examples (streaming file io, moving average, queue example, echo server, REPL)
https://github.com/fancellu/fs2-examples

cats cats-effect fs2 scala

Last synced: 23 days ago
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A few fs2 examples (streaming file io, moving average, queue example, echo server, REPL)

• Host: GitHub
• URL: https://github.com/fancellu/fs2-examples
• Owner: fancellu
• Created: 2024-08-09T15:48:30.000Z (3 months ago)
• Default Branch: main
• Last Pushed: 2024-08-18T13:16:48.000Z (3 months ago)
• Last Synced: 2024-10-01T15:59:15.821Z (about 1 month ago)
• Topics: cats, cats-effect, fs2, scala
• Language: Scala
• Homepage:
• Size: 9.77 KB
• Stars: 5
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# FS2 examples (And ZIO too!)

A few fs2/zio examples

## Converter1 (Also a ZIO version)

Converts from Fahrenheit file to stdout in Celsius

- Parses multiple input files

- Handles empty lines, comments, non doubles, missing files

- Formats to 2 decimal places

- Prepends with a header line

## WindowedAverage (Also a ZIO version)

- Emits a windowed running average of the last 5 values

## QueueExample (Also a ZIO version)

- Creates stream that emits incrementing int every 100ms to a queue

- Creates stream that reads int from queue and adds int to ref

- Runs both at the same time, terminating after 1 second, printing out the ref sum

## EchoServer

- Listens for telnet to port 5555, 2 concurrent connections

- Echos commands back to user

- "EXIT" will say "Byebye!" and terminate their connection

- "KILLSERVER" will terminate the server

- Also spins up a REPL, so we can kill server cleanly from console, via SignallingRef

## REPL  (Also a ZIO version)

- A simple REPL example

- Echos in the input from stdin

- Exits loop upon "KILLSERVER" or EOF signal