Alan L Alan-Liang

程设课的目的

作业要有目的性; 班级的培养目标是什么? 什么是「计算机科学家」? 实际上, 抑或是「工程师」?

目的直接决定了课程设置的方向和思路。

自顶向下? 自底向上? 实验入手? whatever?

I hereby claim:

I am Alan-Liang on github.
I am alanliang (https://keybase.io/alanliang) on keybase.
I have a public key whose fingerprint is D80E 1B95 F4D7 2DC8 D8D5 ED13 ADDA 8090 B117 1126

To claim this, I am signing this object:

	grammar Heredoc;

	@lexer::members {
	public boolean heredocValid (String str) {
	String[] lines = str.split("\n");
	String first = lines[0], last = lines[lines.length - 1];
	return first.substring(2).equals(last);
	}
	}

	// -- mode: Rust; --

	class Complex (
	RealType extends Math.Field = Float,
	ImagType extends Math.Field = RealType,
	) extends Math.Field {
	constructor (real: RealType, imag: ImagType) {}
	fn + (that: Complex) = Complex(real + that.real, imag + that.imag)
	fn +-inverse = Complex(-real, -imag)
	fn abs = (this * conj).real.sqrt()

	<template>
	<main>
	<p v-if="loading">Loading todos...</p>
	<p v-else-if="loadError">Error loading todos: {{ loadError }}</p>
	<template v-else>
	<p>Add a todo: <input v-model="newTodo"> <button @click="addTodo">add</button></p>
	<ul>
	<li v-for="todo in todos" :key="todo.localId"><button @click="removeTodo(todo)">Remove</button> {{ todo.content }}</li>
	</ul>
	</template>

	#!/usr/bin/env node
	const readline = require('readline')
	const printer = require('node-native-printer')

	const [ ,, filePath, pageCount, printerName ] = process.argv
	if (!filePath \|\| !pageCount) process.exit(-1)

	const print = function (options) {
	const res = printer.print(filePath, options, printerName \|\| 'HP_LaserJet_Professional_M1136_MFP')
	if (!res) throw 'No result from CUPS'

	Some discussions: (in chinese)

	https://www.v2ex.com/t/656367
	https://www.v2ex.com/t/656394
	http://dacongyun.com/archives/216644.html