This is the sample code to accompany the book Haskell in Depth (Vitaly Bragilevsky, Manning Publications 2021).
To get the source code on your system, you may want to clone this repository:
$ git clone https://github.com/bravit/hid-examples.git
To work with the code on your system, you need either:
Using cabal (3.0+)
To build the whole package, issue the following command:
$ cabal build
To build only one project component:
$ cabal build hello
To run a component:
$ cabal run hello
Up to date
Hello, world
$ cabal -v0 run hello
Hello, world
$ cabal run stockquotes -- data/quotes.csv -c
...
$ file chart.svg
chart.svg: SVG Scalable Vector Graphics image
To explore a component in REPL:
$ cabal repl hello
...
$ cabal repl stockquotes
ghci> :m StatReport
ghci> :type mean
mean :: (Fractional a, Foldable t) => t a -> a
To test the whole package:
$ cabal test
To run one test-suite:
$ cabal test radar-test
Using Stack
To build:
stack build
To run:
stack exec <executable> [ -- <arguments>]
For example:
stack exec stockquotes -- data/quotes.csv -c
...
$ file chart.svg
chart.svg: SVG Scalable Vector Graphics image
To test:
stack test
To explore a component in REPL:
$ stack repl :stockquotes
ghci> :m StatReport
ghci> :t mean
mean :: (Fractional a, Foldable t) => t a -> a