aws quickstart

": "2012-08-22","Count": 1}]-The last one is an example of how to modify the reduce result with a completion device.> Db.test.group ({... key: {day:true},... initial: {count:0},... reduce:function (obj,prev) {prev.count++;},... finalize:function (out) {out.scaledcount = Out.count * 10}--A new key is added to the result document.... } )[{"Day": "2012-08-20","Count": 2,"Scaledcount": 20},{"Day": "2012-08-21","Count": 2,"Scaledcount": 20},{"Day": "2012-08-22","Count": 1,"Scaledcount": 10}]Parameter

Label:Sort () methodTo sort documents in MongoDB, you need to use the sort () method. The sort () method accepts a document that contains a list of fields together with their sort order. To specify sort order 1 and-1. 1 is used in ascending order, and-1 for descending order.Grammar:The basic syntax for the sort () method is as follows >db. Collection_name. Find(). Sort({KEY:1}) ExampleConsider the collection Myycol with the following data { "_ID" : ObjectId(5983548781331adf45ec5), "

additional configuration. However, if the default property is not satisfied with your project, you can also make some information about customizing the project. For example, we specify the version number and some jar manifest information for the project.sourcecompatibility = 1.5version = ' 1.0 ' jar {manifest {attributes ' Implementation-title ': ' Gradle Quickstart ', ' Implementation-version ': Version}}In fact, the series of tasks added by the Jav

Previous section: "Chapter 2nd Spring QuickStart" 2.1 Java application HelloWorldThis section focuses on how spring is used in the Web development process. in the previous section, we talked about how to use the spring container in normal Java project, so how does spring integrate with the Web container when it comes to integrating spring in web development? This chapter focuses on the integration of the web with spring, and provides a simple web Demo

Crosswalk QuickStart, using WEBRTC (HTML) to start developing video callsInstall PythonDownload the installer from http://www.python.org/downloads/After the installation is complete, add the environment variable again.Installing Oracle JDK Download page:http://www.oracle.com/technetwork/java/javase/downloads/Select the Java version to download (recommended Java 7). Select a JDK to download and accept the license agreement. Once downlo

or immediately after that, it executes a method. You can also pass an additional parameter "Context" to allow you to search/filter.Here are some of the base samples for finding elements.// find the element with id= "foo"; $ (//Find all the divs on thepage; $ (//Find all elements, that has theclassname = "foo"; $ (//Find all span ' s. exist inside the element with id= "foo"Below, we find all the list elements ($ ("Li"). addclass ("foo");Here we find an "foo" element by ID and hide it.$ ("#f

staticorg.junit.assert.asserttrue;importjava.util.date;importjava.util.list;import org.apache.lucene.document.Document;importorg.apache.lucene.index.Term;import org.apache.lucene.search.numericrangequery;importorg.apache.lucene.search.query;import Org.apache.lucene.search.termquery;importorg.junit.before;importorg.junit.test;publicclass SearcherTest{/*** Index Store Directory */privatestaticfinalstringindexdir= "e:\\documents\\lucene-quickstart\\";

What we call the front end refers to the use of HTML writing language to write through the browser display page, HTML full text is Hypertext Markup Language, the emphasis is on the word tag. That is, a piece of text that we write in Notepad adds a series of markers that let the browser show a specific effect. 1. LabelHTML can be used to broadly include CSS, semantic tags, HTML structure, text hyperlinks, pictures, tables, lists, form types. Through this series of labels, the defined p

Unity 2D Game Development QuickStart 1th creating a simple 2D gameEven now, many novice game developers, when it comes to unity, still think unity can only be used to make 3D games. In fact, when Unity released its 4.3 release in 2013, it started offering support for 2D games. For example, there are some unity tools dedicated to developing 2D games. Now that Unity has released version 4.5, the support for 2D Games has improved a lot. To illustrate Uni

all.Tapping Install and entering a password will start the installation. Installation CompleteThe Docker Quickstart terminal is the equivalent of a shortcut to Docker through the terminal, eliminating the hassle of logging in, Kitematic is the graphical interface of Docker, which can be visualized and used directly from the Docker hub. The following are the command-behavior interfaces Basic operations Install imagesudo

the introduction of XML is getting hotter, and the basic tutorials on XML are also ubiquitous on the web. But a lot of concepts and terminology are often daunting, and many friends ask me: What is the use of XML, we need to learn it? I would like to write a more comprehensive introduction to my personal experiences and experience in the learning process. First, there are two points to be sure: First: XML is certainly the future development trend, whether it is a web designer or Web programmer, s

Tags: Linux linux get started Linux operations Linux commandOne of the prerequisites for using Linux is the Linux process management, which is the process by which countless processes are running. These processes need to occupy the system memory and other resources, good system process management, for our reasonable allocation, use of system resources has great significance. Today we look at the IPCS command in the Process Management command. The IPCS command is used to report the status o

OS module: Operating system interfaceYou should use the Import OS style instead of the From OS import *. This ensures that Os.open (), which varies with the operating system, does not overwrite the built-in function open () is useful for using the Dir () and help () functions built into large modules such as the OS.For daily file and directory management tasks, the Shutil module provides an easy-to-use, high-level interface.Glob module: Generate a list of files from the directory wildcard search

integers, floating-point numbers, single characters, and Boolean values, all for the sake of compatibility, who calls her a powerful language?!This is the basic type it supports: Double,bool, char, short, int, long, float, long double. Students who have studied C language should be familiar with it.3 Advanced data typesC + + differs from the C language in that she defines objects in which there are many behaviors and attributes that are encapsulated within an object, exposed only through a limi

. GetValue (Angleproperty); public static void Setangle (DependencyObject obj, double value) {obj. SetValue (angleproperty, value); } public static readonly DependencyProperty Angleproperty = dependencyproperty.registerattached ("Anglepr Operty ", typeof (Double), typeof (Rotationhelper), New PropertyMetadata (0.0,onanglechanged)); private static void Onanglechanged (DependencyObject D, DependencyPropertyChangedEventArgs e) {UIElement element = d as UIElement; if

(tuple), the return value must be the same type, otherwise it is always list. For example, the following programs can calculate partial primes:1 def F (x):return and x%3!=02 filter (F,range (2,25))Map (function, seq1,[seq2 ...]) invokes function (item) in turn for each element and returns the return value as a list. For example, the following program computes the cube:1 def Cube (x):return x*x*x2 map (Cube,range (1,10))1 seq = range (8)2def Add (x, y):return x+y3 Map (ADD,SEQ,SEQ)4#ans [0,2,4,

/web/index.html//Get/web/file.txt//Returns/web/file.txtApp.Use ( ({rootdir: Web " Span class= "Meta delimiter object comma js" >,rootpath:/web ' }) ) /span> //Index support//GET///Returns/file.txtApp.Use ( ({rootdir: Web " Span class= "Meta delimiter object comma js" >,index: File.txt ' }) ) /span> //rewrite support//get/web///returns 404//Get/admin//Returns/admin/index.htmlApp.Use ( ({rootdir: Web " Span class= "Meta delimiter object comma js" >,rootpath:

Import SDKThis article will show you how to import HiAR SDK for unity in a unity project. Before you begin, please visit the HiAR official website to download the latest version of the SDK.Download HiAR SDK for Unity Step 1. Download the unzip SDKTo download the SDK package from the download page, you can get a zip file: hiar_sdk_unity_yyyymmdd_vx.x.x_xxxxxxx.zip (the file name changes with the version update). Unzip the zip file to see the following directory structure: Lib direc

export Android Program (engineering) or IOS project, please refer to the relevant documentation.Export Android Engineering, appsExport IOS Project How to preset local recognitionIf you want the application to pre-set some local recognition content, as local recognition should be, add imagetarget to Hiarcamera, and the relevant AR content. You can refer to the example of Hello world for a way to operate.Create Hello World For older versions of documentsThis article is written based o

DescriptionPython is really a lot more concise than other languages, and in the process of learning C, at least to the very back of the file operation, but Python QuickStart in a very concise way to let you have a file operation experience, of course, this is in the Linux environment, But it has to be said that the Linux environment for programming learning is really more than Windows can learn more knowledge, the following two examples are from the "