| module Grammar where | |
| import Prelude | |
| import Control.Applicative.Free (FreeAp, liftFreeAp, foldFreeAp) | |
| import Control.Alt (class Alt, (<|>)) | |
| import Control.Alternative (class Alternative) | |
| import Control.Monad.Eff (Eff) | |
| import Control.Monad.Eff.Console (log, CONSOLE) | |
| import Control.Plus (class Plus, empty) |
| # LVDB - LLOOGG Memory DB | |
| # Copyriht (C) 2009 Salvatore Sanfilippo <[email protected]> | |
| # All Rights Reserved | |
| # TODO | |
| # - cron with cleanup of timedout clients, automatic dump | |
| # - the dump should use array startsearch to write it line by line | |
| # and may just use gets to read element by element and load the whole state. | |
| # - 'help','stopserver','saveandstopserver','save','load','reset','keys' commands. | |
| # - ttl with milliseconds resolution 'ttl a 1000'. Check ttl in dump! |
With the recent announcement of cats-effect, a relevant question from the past resurfaces: why does IO, which is otherwise quite Task-like, not define both or race? To be clear, the type signatures of these functions would be as follows:
object IO {
def both[A, B](ioa: IO[A], iob: IO[B])(implicit EC: ExecutionContext): IO[(A, B)] = ???
def race[A, B](ioa: IO[A], iob: IO[B])(implicit EC: ExecutionContext): IO[Either[A, B]] = ???
}| {-# LANGUAGE ApplicativeDo #-} | |
| {-# LANGUAGE ConstrainedClassMethods #-} | |
| {-# LANGUAGE ConstraintKinds #-} | |
| {-# LANGUAGE DataKinds #-} | |
| {-# LANGUAGE DeriveFunctor #-} | |
| {-# LANGUAGE DeriveGeneric #-} | |
| {-# LANGUAGE FlexibleContexts #-} | |
| {-# LANGUAGE FlexibleInstances #-} | |
| {-# LANGUAGE IncoherentInstances #-} | |
| {-# LANGUAGE InstanceSigs #-} |
TypeScript supports Pick to allow you to get a "subset" object type of a given type, but there is no built-in Pick for deeper nested fields.
If you have a function that takes a large object as argument, but you don't use all of its fields, you can use Pick, Pick2, Pick3, etc to narrow down the input type to be only just what you need. This will make it easier to test your function, because when mocking the input object, you don't need to pass all fields of the "large" object.
| #!/bin/bash | |
| function star-command { | |
| if [ "$1" == "" ] || [ "$1" == "-h" ]; then | |
| echo "star-command \"command to store on your favorites\"" | |
| echo "star-command -l \"list your favorites\"" | |
| elif [ "$1" == "-l" ]; then | |
| cat ~/.star-commands | |
| else | |
| echo "$1" >> ~/.star-commands |
Neste desafio você terá que desenvolver uma aplicação web ou mobile (iOS ou android).
Desta vez, você pode optar por diferentes tipos de aplicações. Abaixo está uma relação de APIs que você pode escolher:
Hi all!
After a very lengthy period of development and testing, FS2 (formerly scalaz-stream) version 0.9 is finally out! Here's how to get it.
For this release, the library has undergone a major redesign. Check out the migration guide for more info, and also the shiny new user guide. Going forward, we expect the API of the library will be quite stable and hope it becomes one of the bedrock libraries of the Scala ecosystem. The 0.9 series has already seen production use as well as a huge amount of testing during the development process; we feel very good about recommending people upgrade.
| resource "aws_api_gateway_rest_api" "myApi" { | |
| name = "myApi-${var.env}" | |
| description = "My awesome API (${var.env} environment)" | |
| } | |
| resource "aws_api_gateway_deployment" "myApi" { | |
| depends_on = [ | |
| "aws_api_gateway_integration.myApi_myEndpoint_post", | |
| "aws_api_gateway_integration_response.myApi_myEndpoint_post", | |
| "aws_api_gateway_integration_response.myApi_myEndpoint_post_400", |
| /** | |
| * This short program will encrypt the user password | |
| * and insert a new record into a mock database. | |
| */ | |
| const Reader = require('fantasy-readers'); | |
| const R = require('ramda'); | |
| const crypto = require('crypto'); | |
| // our mock database | |
| const database = [ |
