Popularity
6.4
Stable
Activity
0.0
Stable
32
5
1
Programming language: Crystal
License: MIT License
Tags:
Misc
Latest version: v2.0.0
promise alternatives and similar shards
Based on the "Misc" category.
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Universally Unique Lexicographically Sortable Identifier (ULID) in Crystal -
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m3u8
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message_verifier.cr
Rails compatible MessageVerifier for Crystal-lang apps -
defined
This shard provides facilities for checking whether a constant exists at compile time, and for a variety of different conditional compilation options. Code can be conditionally compiled based on the existence of a constant, version number constraints, or whether an environment variable is set truthy or not.
Access the most powerful time series database as a service
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Promo
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Popular Comparisons
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promisevsevented
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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