promise Alternatives - Crystal Misc

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Programming language: Crystal

License: MIT License

Tags: Misc

Latest version: v2.0.0

promise alternatives and similar shards

Based on the "Misc" category.
Alternatively, view promise alternatives based on common mentions on social networks and blogs.

guardian

9.7 0.9 promise VS guardian

File change watcher for Crystal and Non-Crystal libs
sentry

9.7 1.1 promise VS sentry

Watches src files, rebuilds/reruns application on file changes

Get performance insights in less than 4 minutes

Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.

Sponsored scoutapm.com

immutable

9.4 0.0 promise VS immutable

Implementation of thread-safe, persistent, immutable collections
neph

9.4 0.0 promise VS neph

A modern command line job processor that can execute jobs concurrently
hoop

9.4 0.0 promise VS hoop

Building native OSX apps
crystagiri

8.9 0.0 promise VS crystagiri

An Html Reader / parser like Nokogiri Ruby gem
stumpy_png

8.8 2.1 promise VS stumpy_png

Read and write PNG images
tren

8.6 0.0 promise VS tren

Give your SQL some love
cltk

8.4 0.0 promise VS cltk

A crystal port of the Ruby Language Toolkit
crz

8.2 0.0 promise VS crz

Functional programming library
html_builder

8.2 0.0 promise VS html_builder

DSL for creating HTML
crystal-futures

7.6 0.0 promise VS crystal-futures

Future type implementation
kreal

7.4 0.0 promise VS kreal

Model sharing & RPC library built on and works with Kemal seamlessly
aasm.cr

7.2 0.0 promise VS aasm.cr

Easy to use finite state machine for Crystal classes
raytracer-crystal

7.2 0.0 promise VS raytracer-crystal

CPU Raytracer with examples
cron_scheduler

7.1 0.0 promise VS cron_scheduler

Job scheduler with crontab patterns
monads

7.0 0.3 promise VS monads

Monad implementation
lambda.cr

6.8 0.0 promise VS lambda.cr

Uniformed function call syntax
emoji.cr

6.8 0.3 promise VS emoji.cr

Emoji library
statsd.cr

6.8 1.3 promise VS statsd.cr

Statsd client library
inflector.cr

6.7 0.0 promise VS inflector.cr

Singularize, pluralize, camelize, etc (port from ActiveSupport)
lirith

6.7 0.0 promise VS lirith

Graphics engine
crystal-diff

6.6 0.0 promise VS crystal-diff

A Crystal sequence differencing implementation
any_hash.cr

6.4 0.5 promise VS any_hash.cr

Recursive Hash with better JSON::Any included
ulid

6.4 0.0 promise VS ulid

Universally Unique Lexicographically Sortable Identifier (ULID)
accord

6.1 0.3 promise VS accord

Sharable validations for Crystal objects
chalk-box

6.1 0.0 promise VS chalk-box

Terminal color toolbox, check support and colorized (without String monkey patch)
burocracia.cr

6.1 0.0 promise VS burocracia.cr

burocracia.cr the dependecyless shard to validate, generate and format Brazilian burocracias such as CPF, CNPJ and CEP
evented

6.0 0.0 promise VS evented

A micro library to publish and subscribe for Crystal objects
CrSerializer

5.9 2.1 promise VS CrSerializer

Extensible annotation based serialization/deserialization library
retriable.cr

5.8 2.4 promise VS retriable.cr

Simple DSL to retry failed code blocks
denetmen

5.8 0.0 promise VS denetmen

Useful micro validator / check library
wafalyzer

5.6 7.2 promise VS wafalyzer

Web Application Firewall (WAF) Detector
stumpy_gif

5.5 0.0 promise VS stumpy_gif

Write (animated) GIF images
circuit_breaker

5.5 0.2 promise VS circuit_breaker

Implementation of the circuit breaker pattern
moola

5.4 0.0 promise VS moola

Library for dealing with money and conversion (inspired by RubyMoney)
i18n.cr

5.4 0.0 promise VS i18n.cr

Internationalization shard
syscall.cr

5.4 0.0 promise VS syscall.cr

Raw syscall interface
crystal-binary_parser

5.2 1.2 promise VS crystal-binary_parser

Binary parser
wikicr

5.2 0.0 promise VS wikicr

Wiki using git to manage revisions
crystal-web-framework-stars

5.0 0.0 promise VS crystal-web-framework-stars

Web frameworks for Crystal, most starred on Github
atomic_write.cr

4.7 0.2 promise VS atomic_write.cr

Library for writing or apppending files atomically
acorn

4.6 0.0 promise VS acorn

State Machine Compiler for Crystal
pinger

4.4 0.4 promise VS pinger

Ping IP addresses and DNS entries without requiring sudo
message_verifier.cr

4.3 0.0 promise VS message_verifier.cr

Verify and generate Rails ActiveSupport::MessageVerifier signed tokens
m3u8

3.8 0.0 promise VS m3u8

Generate and parse m3u8 playlists for HTTP Live Streaming
sslscan.cr

3.8 7.1 promise VS sslscan.cr

Crystal shard wrapping the rbsec/sslscan utility
callbacks

3.8 0.0 promise VS callbacks

Expressive callbacks module
turkish-number

3.6 0.0 promise VS turkish-number

Turn integers into the Turkish words
crdoc

3.6 0.0 promise VS crdoc

CLI tool to search and open documentation

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README

Promise.cr

A Promise Implementation in Crystal.

Installation

Add promise to the shard.yml file as a dependency.

# shard.yml
dependencies:
  promise:
    github: jwaldrip/promise.cr
    tag: {desired_tag}

Usage

require "promise"
require "http/client"
require "json"

def read_body(response : HTTP::Client::Response) : String
  response.body
end

request = Promise(HTTP::Client::Response | JSON::Any).execute do |resolve|
  HTTP::Client.get "https://httpbin.org/user-agent"
end

puts "do something else...."

request.then do |response|
  JSON.parse(read_body(response as HTTP::Client::Response))
end.catch do |ex|
  puts "caught!"
  puts ex.message
end.then do |json_hash|
  puts json_hash
end.await

Documentation

You can generate docs using crystal doc on your local machine, or visit: https://jwaldrip.github.com/promise-cr to view the current version's documentation.

Contributing

See CONTRIBUTING