pingjiang

/*
 * test1.cpp
 * This program shows how to access Cocoa GUI from pure C/C++
 * and build a truly functional GUI application (although very simple).
 * 
 * Compile using:
 *   g++ -framework Cocoa -o test1 test1.cpp
 *
 * that will output 'test1' binary.
 */

pingjiang

Lisp interpreter in 90 lines of C++

I've enjoyed reading Peter Norvig's recent articles on Lisp. He implements a Scheme interpreter in 90 lines of Python in the first, and develops it further in the second.

Just for fun I wondered if I could write one in C++. My goals would be

1. A Lisp interpreter that would complete Peter's Lis.py test cases correctly...
2. ...in no more than 90 lines of C++.

Although I've been thinking about this for a few weeks, as I write this I have not written a line of the code. I'm pretty sure I will achieve 1, and 2 will be... a piece of cake!

pingjiang

import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

public class JsonQueryEngine {
                
                public static List<String> getExpressionValues(String expression, String propertySeperator, JSONObject jsonObject) throws Exception{
                                String[] nodesList = expression.split(propertySeperator);//Splitting each property in expression

pingjiang

// ==UserScript==
// @name Use Markdown, sometimes, in your HTML.
// @author Paul Irish <http://paulirish.com/>
// @link http://git.io/data-markdown
// @match *
// ==/UserScript==


// If you're not using this as a userscript just delete from this line up. It's cool, homey.

pingjiang

# Copyright 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Script that is used by PRESUBMIT.py to run style checks on Java files."""
import os
import subprocess
import xml.dom.minidom
CHROMIUM_SRC = os.path.normpath(
    os.path.join(os.path.dirname(__file__),
                 os.pardir, os.pardir, os.pardir))

pingjiang

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">

<!--
  See installation instructions: https://sites.google.com/a/chromium.org/dev/checkstyle
-->
<module name="Checker">
  <property name="severity" value="warning"/>
  <property name="charset" value="UTF-8"/>
  <module name="TreeWalker">

pingjiang

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">


<!--
    Checkstyle-Configuration: Android checkstyle by Enea
    Description: none
--> 

pingjiang

(function() {

  var root = this;
  
  var _ = function() {
    
  };

  // Export the object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in

pingjiang

var fs = require('fs');
var files = ['a.txt', 'b.txt', 'c.txt'];
for (var i = 0; i < files.length; i++) { 
    fs.readFile(files[i], 'utf-8', function(err, contents) {
    console.log(files[i] + ': ' + contents);
  });
}

pingjiang

var inherits = function (ctor, superCtor) {
    ctor.super_ = superCtor;
    ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
            value: ctor,
            enumerable: false
        }
    });
};