luochen1990

#!/usr/bin/env bash

#echo '$@ = ' "$@"

nixfile="$1"; shift
#echo "nixfile =" "$nixfile"

outpath="$(nix-build --pure $nixfile)"
#echo "outpath =" "$outpath"

luochen1990

#!/usr/bin/env nix-shell
#! nix-shell -p "ghc"
#! nix-shell -i "runghc"

-- https://www.zhihu.com/question/23999095/answer/2254625328

import Control.Monad (guard)

brain_states :: (Int, Int) -> [Int]
brain_states (x, y) = [z | z <- [x + y, abs(x - y)], z > 0]

luochen1990

#!/usr/bin/env nix-shell
#! nix-shell shell.nix

{ pkgs ? import <nixpkgs> {} }:

(pkgs.buildFHSUserEnv {
  name = "devbox";
  targetPkgs = pkgs: (with pkgs; [
    python38
    python38Packages.pip

luochen1990

#!/usr/bin/env nix-build

{ nixpkgs ? (import <nixpkgs> {}) }: with nixpkgs;
stdenv.mkDerivation rec {
  pname = "some-c-project";
  version = "0.1";
  src = ./.;
  nativeBuildInputs = [ cmake ]; #replace to your build time dependencies
  buildInputs = [ libssl ]; #replace to your runtime dependencies
}

luochen1990

#!/usr/bin/env python3

phrases = '''
;  希腊字母: 参考 https://en.wikipedia.org/wiki/Greek_alphabet

Alpha,1=Α
alpha,1=α
Nu,9=Ν
nu,9=ν
Beta,1=Β

luochen1990

#!/usr/bin/env -S bash -c 'docker build -t devbox --build-arg USER_ID=$(id -u) --build-arg USER_NAME=$(id -un) --build-arg GROUP_ID=$(id -g) --build-arg GROUP_NAME=$(id -gn) $(realpath $(dirname $0))'

FROM ubuntu:20.04

ARG USER_ID
ARG USER_NAME
ARG GROUP_ID
ARG GROUP_NAME

RUN addgroup --gid $GROUP_ID $GROUP_NAME; exit 0

luochen1990

#!/usr/bin/env nix-shell
#! nix-shell -p "haskellPackages.ghcWithPackages (p: with p; [conduit conduit-extra bytestring text hint])"
#! nix-shell -i "ghci -ignore-dot-ghci -fdefer-type-errors -XTypeApplications"

{-# language ScopedTypeVariables, TypeApplications, PartialTypeSignatures #-}
{-# language OverloadedStrings #-}

import Conduit
import Data.Conduit
import Data.ByteString (ByteString)

luochen1990

#!/usr/bin/env bash

#So that directories are relative to current file path instead of cwd
#Ref: https://stackoverflow.com/questions/242538/unix-shell-script-find-out-which-directory-the-script-file-resides
cd $(dirname $0)
cd ./server

#Start multiple daemon processes and kill them all in one shot
#Ref: https://stackoverflow.com/questions/3004811/how-do-you-run-multiple-programs-in-parallel-from-a-bash-script
(trap 'kill 0' SIGINT EXIT;

luochen1990

#!/usr/bin/env python3
import sys
import os
relpath = lambda p: os.path.normpath(os.path.join(os.path.dirname(__file__), p))
sys.path.append(relpath('..')) # so that you can import from upper dir

path1 = relpath('../src/main.py')
print(f'path1 relative to cwd: {path1}')
print(f'path1 absolute path: ({ os.path.abspath(path1) })')

luochen1990

{-# language TemplateHaskell #-}
{-# language TypeFamilies #-}
{-# language StandaloneDeriving, DeriveFunctor, DeriveFoldable, DeriveTraversable, DeriveGeneric, DeriveDataTypeable, DeriveAnyClass, FlexibleContexts #-}

import Control.Monad.Free
import Data.Functor.Foldable
import Data.Functor.Foldable.TH
import Data.Functor.Classes
import Text.Show.Deriving
import Data.Foldable