Ray Shih rayshih

nkpart: Why haskell? Super cheap upgrades. Major compiler versions, major library versions, no worries.

parqit: @nkpart can you please elaborate on "cheap"?

For sure!

At veitchlister.com.au, we use a mix of Haskell and Ruby (with a smattering of Java and C++ around as well). As you can imagine, there are stark difference when you are maintaining code across these ecosystems! We have been doing this for a few years now, such that we have code in all languages that has been around for at least a few years, and we've been through large refactors, system upgrades and dependency upgrades in each.

Gradle Dependency Resolution

Normal Gradle behavior

The default behavior of Gradle to pick the newest version also applies if a lower version has been declared locally, but another dependency transitively pulls in a newer version. This is in contrast with Maven, where a locally declared version will always win.

For example, if your build.gradle specifies the dependency org.springframework:spring-tx:3.2.3.RELEASE, and another dependency declares 4.0.5.RELEASE as a transitive dependency, then 4.0.5.RELEASE will take precedence:

dependencies {
    compile("org.springframework.data:spring-data-hadoop:2.0.0.RELEASE")
    compile("org.springframework:spring-tx:3.2.3.RELEASE")

// will select org.springframework:spring-tx:4.0.5.RELEASE

	{-

	A program searching for solutions of a board puzzle
	given by a friend.

	The aim is to fill in a 8 by 8 square using the
	given 8 pieces. Each piece has a particular shape and
	can be rotated and flipped.

	I am not satisfied with this program yet. The program

	module Main where

	import Prelude
	import Control.Monad.Eff (Eff)
	import Control.Monad.Eff.Console (CONSOLE, logShow)
	import Data.Either (Either(..))
	import Data.Foldable (elem, notElem)
	import Data.Int (toNumber)
	import Data.Traversable (traverse)
	import Data.Validation.Semigroup (invalid)

	mkdir -p node_modules/react-native/Libraries/Lists/ && \
	for file in 'FlatList' 'MetroListView' 'SectionList' 'VirtualizedList' 'VirtualizedSectionList' 'ViewabilityHelper' 'VirtualizeUtils'; \
	do curl https://raw.githubusercontent.com/facebook/react-native/master/Libraries/Lists/${file}.js > node_modules/react-native/Libraries/Lists/${file}.js; \
	done