programmable lego

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Effective C # Principle 32: Select Small and cohesive assemblies

multiple assemblies. As a program, it should be a library of organizational structures that contains related functionality. This is already familiar, but in practice it is difficult to achieve. In fact, for a distributed application, you may not know in advance which classes should be distributed to both the server and the client. Even if possible, the functionality of the server side and the client is likely to be mobile; you will likely face both sides in the future. By making the Assembly a

Introduction to JSF 2, part 2nd: Templates and composite components

small framework to separate the JSP view layout and its content, much like the swing layout manager idea. Craig asked me if I would like to include my template library in Struts, and I readily agreed. Thus, the Struts Template library, bundled with Struts 1.0, became the foundation of the popular Tiles Library of struts, and the Tiles library eventually became a top-level Apache framework.JSF 2 is now the default display technology-facelets-is a template framework, to a large extent, based on t

Introduction to Virtual Machines (III.)--Introduction

machines, whether refrigerators, VCRs, or computers, have one thing in common: they are designed to accomplish a specific set of instructions. These instructions form a set of instructions. The instruction set of any machine can be imagined as a box equipped with Lego (high assembled toy). These Lego are put together to form a whole. For machines, these Lego are

Reverse Ajax, part 2nd: WebSocket

recycled, so the scheme has better scalability in terms of high-capacity connectivity.To understand how threads work behind the scenes, you can think of a lego™ block as a selector, which is identified by a pin each time an incoming connection arrives at the Lego block. Lego blocks/selectors have as many pins as the number of connections (as many keys). Then, ju

Deep understanding of the JavaScript series (6): S.O.L. I. D five principles-single responsibility SRP_javascript tips-js tutorial

objects and information. Service provider-this object is designed to process tasks and provide services to other objects. Controller-this object is designed to control decisions and handle a series of tasks Coordinator-this object does not make any decision processing work, but delegate only works on other objects. Interfacer-this object is designed to convert information (or requests) in each part of the system) Once you understand these concepts, it is easy to know whether your code is multi-

3-Day box office 400 million! Old son want to use the explosion of "Great Wall" to Le vision calcium supplementation?

Zhang Yimou's film "Great Wall" since the national release, facing the well-known film critics, facing Douban review only 5 points, as of 5 o'clock in the afternoon December 18, Zhang Yimou's film "Great Wall" the total box office has exceeded 400 million.650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/8B/B4/wKioL1hWgpeAB4TpAAGIlxlRFzY210.jpg "title=" Img8cbebe08ed4a43170357139.jpg "alt=" Wkiol1hwgpeab4tpaagilxlrfzy210.jpg "/>Wen/Zhang ShuleIt is important to note that under the turmo

Service granularity troubles

encapsulates. Otherwise, we cannot be sure that this service is exactly what we need. This does not mean that we should not build coarse-grained services. In fact, coarse-grained services are often stuck at the "business-grained" layer, which allows business users and IT staff to directly talk to each other, it has direct meaning on the business and should be exposed. At the same time, if we only mechanically consider reusability, it will lead to a large number of small-granularity functional u

Deep understanding of the JavaScript series (6): The single responsibility of S.O.L.I.D Five principles srp_javascript Skills

to handle work and provide services to other objects controller– This object is designed to control the decision of a series of responsible task processing coordinator– This object does not make any decision processing work, just delegate work to other objects interfacer– This object is designed to transform information (or requests) in various parts of the system Once you know these concepts, it's easy to know if your code is more or more of a single responsibility. Instance Code The example

Basic operations of stored procedures (SQL Server Management studio)

Recently, I used vs2008 + SQL Server 2005 for development. To use stored procedures that have not been used before, I found some basic operations on the stored procedure and kept files for use. Create a stored procedure In the object Resource Manager, connect to the SQL Server 2005 database engine instance and expand the instance. Expand"Database"The database to which the stored procedure belongs and"Programmable". Right-click"Stored Procedure"A

Cocos2d-x Study Notes

responsible for converting objects in 3D space into 2D images through projection and grating, and then rendering them to the screen. (5) When OpenGL is not set, the initial coordinate system is called the world coordinate system. OpenGL also maintains a drawing coordinate system. (6) OpenGL introduced the programmable shadow (shader) from version 2.0 ). The programmable coloring tool mainly includes Ve

NI pxie-5644r vector Signal Transceiver hardware architecture

http://xilinx.eetrend.com/article/7471With the advent of the NI pxie-5644r vector signal transceiver (VST), ni reshaped the concept of the instrument by introducing the flexibility of the user-programmable FPGA into the RF instrument.1. High performance and revolutionary designNI pxie-5644r VST combines typical RF I/O functions in a vector signal analyzer (VSA) and vector signal Generator (VSG) with NI or user-defined functions for signal processing a

Hardware foundation of Linux driver Design (i.)

fixed-point DSP. Fixed-point DSP can only simulate floating-point arithmetic with fixed-point arithmetic.General-purpose processors and digital signal processors are also converging to complement each other's trends, such as the Digital Signal Controller (DSC) that is the Mcu+dsp,blackfin series belongs to DSC. At present, chip manufacturers have introduced many ARM+DSP dual-core processors.Network processor is a kind of programmable device, it is ap

Shenzhou.com is the first IPv6 Ready certified

NP programmable hardware has obvious advantages in implementationAs the first enterprise in China to pass the IPv6 Ready certification in the first phase, the core technology of digital China is undoubtedly competitive. For IPv6 Ready certification, Huang Jian said: "The competition in the market is cruel, and user requirements are constantly changing. to be strong, shenzhou.com must have core competitiveness. Over the years, we have been striving to

I/O Port Address Allocation table (RPM)

(go) http://blog.csdn.net/zeflove/article/details/7337012 port address range Assignment Description0X000-0X01F 8237A DMA Controller 10x020-0x03f 8259A Programmable Interrupt Controller 10x040-0x05f 8253/8254| A Timer counter0x060-0x06f 8042 Keyboard Controller0x070-0x07f Access CMOS ram/real Time clock RTC port0X080-0X09F DMA page Register Access port0X0A0-0X0BF 8259 Programmable Interrupt Controller 20X0C0

Python built-in method-Draft

Address: http://docs.python.org/library/functions.html Translation: Python provides many built-in functions. The following table lists and describes the functions in alphabetical order.ABS (X) Returns the absolute value of a number. The parameter can be a common integer, a long integer, or a floating point number. If the parameter is a plural value, its value is returned. For example, if a = x + yi, ABS (A) = SQRT (x ^ 2 + y ^ 2 ).All (iterable) Returns true if all elements in a

How to select an ambient light sensor

and have not yet been applied in engine warehouses or out-of-vehicle environments. Even with such applications, optical encapsulation is not designed for such harsh environments (+ 125 ℃ or + 150 ℃). Therefore, in the current optical encapsulation technology, these optical sensors may not be able to withstand such an environment. When selecting a device, it depends on what features, performance, and environment functions the designer needs. With the digital output light sensor, the setting proc

Design secure Ajax Mashup

1. Who is mashup? A web site or web application that is seamlessly merged from multiple source sites is called "mashup ". It brings integrated experience to users: pages distributed across different regions are merged and expressed in a novel reuse mode. Typical mashup content is obtained through public interfaces or APIs from third parties. Another method is to obtain content by including web feeds (such as RSS, Atom) and Javascript (such as google AdSense. You will experience mashup in the fo

Deep understanding of the JavaScript series (6): single responsibility SRP under the five principles S.O.L. I. D

objects.Controller-this object is designed to control decisions and handle a series of tasksCoordinator-this object does not make any decision processing work, but delegate only works on other objects.Interfacer-this object is designed to convert information (or requests) in each part of the system)Once you understand these concepts, it is easy to know whether your code is multi-responsibility or single-responsibility.Instance codeThe example code demonstrates how to add a product to the shoppi

Deep understanding of the JavaScript series (6): single responsibility SRP under the five principles S.O.L. I. D

objects.Controller-this object is designed to control decisions and handle a series of tasksCoordinator-this object does not make any decision processing work, but delegate only works on other objects.Interfacer-this object is designed to convert information (or requests) in each part of the system)Once you understand these concepts, it is easy to know whether your code is multi-responsibility or single-responsibility. Instance codeThe example code demonstrates how to add a product to the shopp

[Post] Shi binpai Mobile Robot-robot production tutorial

charging Jack of the chrome panel. The collision sensor, that is, eight miniature switches or five infrared sensors will be installed later. Related links: 1) http://www.parallax.com/dl/docs/prod/boards/ParallaxPDB.PDF (PDF) Part 10: Sensor Installation You only need to install the front detector. The one-off infrared detector differs from the other five because it is installed on the compatible board. These are all components used to hold detectors. Three black

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