haskellTest

• How to add package?

    edit bin path in .cabal/config
    cabal sandbox init
    cabal install moduleName

• Problem: cabal: /usr/bin/ar: permission denied

    Try https://github.com/haskell/cabal/issues/2653

resources

• http://learnyouahaskell.com/starting-out#ready-set-go
• https://wiki.haskell.org/Haskell_in_5_steps
• http://dev.stephendiehl.com/hask/#basics

##Just for test 测试##

This expression $\sqrt{3x-1}+(1+x)^2$ is an example of a $\LaTeX$ inline equation.

he Lorenz Equations:

$$ \begin{aligned} \dot{x} & = \sigma(y-x) \\ \dot{y} & = \rho x - y - xz \\ \dot{z} & = -\beta z + xy \end{aligned} $$

@startuml (*) --> if " 如果 $1 不为空" then -->[true] "make file" if "file exist" then -> "build" as ghc else if "exist test" then -left-> "build test" else --> "report error" endif endif else ->[false] "build test" endif ghc --> if "user parallel" then --> "build with parallel" else -> "buid with $1" endif @enduml

#!/bin/bash
if [ "$1" != "" ]; then
    if [ "$1" = "maths.hs" ]; then
        $GHC -O2 --make $1 -threaded -rtsopts -o "dest/$NAME"
    else
        $GHC --make $1 -o "dest/$NAME"
    fi
    rm -f "$NAME.hi"
    rm -f "$NAME.o"
else
    $GHC --make test.hs -o dest/test
    rm -f "test.hi"
    rm -f "test.o"
fi