tumblr writing

switch statement is not able to write directly similar to a non-null or True condition. Must be a direct Boolean value.Loop: For Loop, foreach ($array as $a value), while (condition), do{}while (condition);Arrays: Array (' A ', ' B ', ' C ');//do not want to directly write the literal as JS.Quantity: Count ($array);Sort: Ascending sort ($array), sorted exactly by size, without the so-called "5" > "10" Problems.Descending Rsort ($array);//Sort directly on an array.Var_dump ($array) can see the d

JSBinThe editor is characterized by the ability to write directly HTML, CSS, JavaScript, and can be observed in real-time in the output of the writing effect, you can set the Autorun javasscript code, the biggest benefit is that there is a console debug box. JsfiddleThe editor is characterized by the ability to write HTML, CSS, and JavaScript directly, but to click Run to see the results in output; some of the features are that he can introduce ext

CSSWriting Order1. Position attributes (position, top, right, z-index, display, float, etc.)2. Size (width, height, padding, margin)3. Text series (font, Line-height, letter-spacing, color-text-align, etc.)4. Background (background, border, etc.)5. Other (animation, transition, etc.)CSS Writing specification Use CSS abbreviation attributeCSS Some properties can be abbreviated, such as Padding,margin,font, and so on, so that the refinement of the code

Today, suddenly think of a problem, feel directly from SOLR start writing, if there is no lucene knowledge background, see the subsequent chapters are still more difficult, so from the next blog post, I may start from Lucene, as long as there is a Java foundation, to deal with Lucene is no problem, laugh ~Notice of reprint:Please respect my intellectual property rights and labor results, this article can be freely reproduced, please specify the source

Decided to start the Python road, using spare time, for more in-depth study of Python. Programming languages are not art, but work or tools, so it is necessary to organize and follow a set of coding specifications. So this afternoon I made a copy according to Pep 8, and I'll follow this code, and I'll keep updating it.PEP8 Python Coding SpecificationA code orchestration1 indent. Indentation of 4 spaces (the editor can do this), no tap, no mix of taps and spaces.2 The maximum length per line is 7

Define the requirements of the API Define requirements and results for each method or function that you add to your project. For requirements, including input and output ranges, exceptions throws exceptions, condition limits, and the type of the return value (especially if the value is an instance of the class). Defining requirements and ensuring that you meet the requirements in your code can help you write robust and secure code. Edge Write Edge Test Whenever you design and write a method or

object with the file, and each file stream class defines a member function called open to complete a series of system-related operations. The prototype of the Open function is: void Open (const char* filename, ios_base::openmode mode = ios_base::out); void Open (const string filename, ios_base::openmode mode = ios_base::out); The file mode (mode) has several: Ofstream outfile ("E:\\out.txt", Ofstream::app);The above code opens the OUT.txt file, and if it does not exist, the system creat

who don't like to explore have trouble writing their own operating system for entertainment. A programmer's requirements are different from that of a regular user, and the programmer needs to know about his computer, master it, and be skilled in getting it to do its job, and in this sense Unix has a huge advantage. Every tool inside it is sharp, you can use it for a long period of years, and it's not going to go out of date.Here I can cite an example

you want to apply to the current project, then you need a 3rd level. The goal is to be able to reproduce (re-implement) papers under the same hypothetical conditions. At the same time, pay attention to the corresponding code on the GitHub, jump to the program can accelerate understanding. Comparing the results you reproduce with the original paper, you can really understand the innovation of an article, as well as its implied premises or assumptions. And you can get some direction of your futur

reproduced from: http://www.blogjava.net/kenzhh/archive/2013/03/15/357824.html First (lazy, thread unsafe): 1 public class Singleton {2 private static Singleton instance;3 Private Singleton () {}4 public static Singleton getinstance () {5 if (instance = null) {6 instance = new Singleton ();7}8 return instance;9}10}11 This type of writing lazy loading is obvious, but the fatal is that multithreading does not work properly. second (lazy, thread safe):

Now, let's write our own first character device driver--light LEDs. (Imperfect, back to perfect) Hardware platform: Exynos4412 (FS4412) Writing the drive is divided into the following steps: A--View the schematic, data manual, understand the equipment operation method; B-Find a similar driver in the kernel, develop it as a template, and sometimes need to start from scratch; C-Implement driver initialization: For example, register the driver with the

A taskstack generator stack is used in the following code to implement the synchronous writing of the asynchronous method Swoole_timer_after, and the invocation of the child generator is implemented incidentally; as long as there is an asynchronous operation with the callback method, Can be used to implement the synchronous writing of asynchronous operation; Class Taskstack {public $stack; Public $gen

Altogether three kinds of writing are as follows: View Sourceprint? for(vari = 0; i View Sourceprint? for(var i inarr) View Sourceprint? for(vari = 0, len = arr.length; i

This article illustrates the steps and implementation methods of C + + writing DLL dynamic link library. Share to everyone for your reference, specific as follows: When writing C + + programs, you often need to write a class as a DLL for the client to invoke. Such a DLL can export an entire class, or it can export a method of this class. First, export the entire class The simple approach is simply to add

The parameter sniff problem is to reuse the execution plan generated by other parameters, which causes the current parameter to adopt a phenomenon that is not optimized for the execution plan. Presumably the students who are familiar with the data should know that the most typical problem of producing parameter sniff is to use parameterized SQL (or parameterized in stored procedures), and if there is uneven data distribution, the implementation plan normally generated, The execution plan for nor

9, Yui writing class way Here is the introduction of Yui 2.7.0 version, just introduce Yahoo.js. Yui introduced a namespace, similar to the Java package. The following Yahoo Tools function pack Yahoo.namespace Yahoo.lang YAHOO.lang.hasOwnProperty YAHOO.lang.extend YAHOO.lang.augment YAHOO.log Yahoo_config and Yahoo.env YUI Module Names Write Class Way: Copy Code code as follows: Define Package Name Yah

Binary files do not hold data in ASCII code, which transmits the form of data stored in memory to disk files without conversion, so it is also known as an image file of memory data. Because the information in the file is not a character data, but a binary form of information in the byte, it is also called a byte file. For binary files, you need to open the file first, and then close the file when you are finished. When opened, it is specified with ios::binary to be transferred and stored in bin

Program A large number of functions are encapsulated in the Java API for use when writing a network communication program.This enables Java to have a powerful network capability.Using Java to write a TCP communication program is simpler, but there are some issues to be aware of. The following is the listener main program, which, after discovering the client connection, initiates a session socket thread to enable real-time sending and receiving of info

web| Program | skills | performance | skills | performance skills Author: Rob Howard This article discusses • Common ASP.net performance difficulties • Useful performance tips and tricks for asp.net • Recommendations for using the database in asp.net • Caching and background processing using asp.net This article uses the following techniques: asp.net,. NET Framework, and IIS Content of this page Data-tier performance Tip 1-Return multiple result sets Tip 2-Paging data access

web| Program | skills | performance | skills | Performance This article discusses: Common myths about ASP.net performance Useful asp.net performance tips and tricks Some suggestions for processing databases in asp.net Buffering and using ASP.net for background processing This article uses the following techniques: asp.net,.net framework, IIS It's incredibly easy to write a Web application with asp.net. It is so easy that many developers can achieve very good performance without having to spend