include the business logic of the application system and macro strategic decisions that are important to the entire system, and reflect the inevitability. Specific layers include secondary Implementation-Related Algorithms and logic, as well as tactical decisions, with a considerable chance to choose. The code at the specific level is frequently changed and errors cannot be avoided.From the perspective of reuse, high-level modules should be reused and the focus of reuse, because they contain th
versa is the signal to rise.In Figure 1 of the Boll Line chart, although the stock price will be subject to 3 tracks, but the stock price is not only hit the track to turn around, but in the middle of the 2 track, and the mid-rail, but also do not know whether to let the stock turn, the middle rail is sometimes supported, sometimes suppressed. MACD, can give further answers:When the MACD signals a sell, the probability of the stock price falling is very large, that is, in the middle of the trac
touch+ Cordova) solutionSlow Bull public number (ionic scheme)Demo (React native solution)Animation:React native compared to the above two, the experience smoother, of course, the native application is certainly better than in the WebView experience, Reactnative combines the advantages of native development and web development, but React native now support Android is not too good, Like animations.Reactnative Flex Layout, component thinking is very good, get started quickly, but because the fina
",/*//after Intraday"Aftertime": "Mar 7:59pm EDT",/* Calculate time after disk */"Ustime": "Mar 4:00PM EDT",/* Current update time in USA */"Chtime": "2013-03-12 07:58:04"/* China time * *},"Gopicture": {"Minurl": "Http://image.sinajs.cn/newchartv5/usstock/min/aapl.gif",/* Tick chart */"Min_weekpic": "Http://image.sinajs.cn/newchartv5/usstock/min_week/aapl.gif",/*5 Day chart */"Dayurl": "Http://image.sinajs.cn/newchartv5/usstock/daily/aapl.gif",/* Daily Cand
]') Plt.title ('World Development in') plt.xticks ([1000,10000,100000], ['1k','10k','100k'])#Additional Customizationsplt.text (1550, India) plt.text (5700, he, 'China ') #Add grid () call Plt.grid (True) #Show the plotPlt.show ()AdditionalWhen do you use logarithmic coordinates? from Baidu EncyclopediaI. Common and logarithmic coordinates1, the interval distance between the scales of the normal coordinates is proportional to the price. That is, in the normal coordinate system, all the same day
officials saying it was possible to raise interest rates in June, thereby propping up the dollar. After the disappointing non-farm payrolls report, the Fed's three-handed Dudley, a non-farm report, issued hawkish rhetoric to support the dollar. The monthly non-farm payrolls report may be slightly weaker than expected, but we will not value the April US nonfarm payrolls report, which is expected to be justified by two increases in the Fed's interest rate in 2016. The FOMC may see whether the May
, The turnover rate is also 10% (the same volume level as compared to the previous session). After the right to deal with the stock price of 11 yuan, compared to the previous day of 10 Yuan Rose 10%, turnover of 5 million shares, so in the stock price chart to reflect the real price rise and fall, while turnover in the ex-right before and after the comparability. right forward: is to maintain the existing price unchanged, the previous price reduction, the ex-right before the
The trend of stock price rise and fall, commonly used candle chart technology to express, divided into the daily candlestick, by the week of weekly candlestick, monthly candle, etc. Take the day candlestick, for example, daily stock price from open to close one day, corresponding to a candle small chart, to show four prices: Open price open (the morning of the be
graduation battlefield, but this time I experienced more, and no longer young. decided, I started to install broadband and prepare funds for my home. In order to give oneself the least pressure the best mentality, I did not ask for financial support with my friends. I made a credit card cover; now, I'm going to use my gold card to set the whole 5W of cash, decided to start from the futures, a Layin goods have leverage, more in line with my goal of small broad, and secondly set; the existing in
Echarts is a Canvas-based, pure Javascript Chart Library that provides intuitive, vivid, interactive and customizable data visualization charts. Innovative drag-and-drop computing, Data View, range roaming and other features greatly enhance the user experience, giving users the ability to dig and integrate data. Compatible with most browsers, including ie6/7/8/9+, Chrome, Firefox, Safari and Opera.Online Demo Source Download Featured feature MashupThe mix-and-match chart will be more expressive
★★★★★
Principle of substitution on the Richter scale
In a software system, a subclass object can be accepted where a base class object is acceptable.
★★★★☆
Dependency reversal principle
Programming for the abstraction layer, rather than programming for specific classes
★★★★★
Interface Isolation principle
Use multiple specialized interfaces instead of one unified interface
★★
abstraction and Hierarchy, The Liskov substitution principle (the Liskov Substitution Principle), named after her name, is proposed, which is referred to as LSP. This principle explains when to use inheritance, when to use it, and why.The Richter replacement method contains four layers of meaning:Subclasses must fully implement the method of the parent class;Subclasses can have their own personalities;Input parameters can be magnified when overriding or implementing a method of the parent class
rot_dist equals to 0 or Num_elem9 //invariant:Ten //Arr[0:rot_dist-i-1] is in final position One //arr[rot_dist-i: rot_dist-1] is the left part, length I A //Arr[rot_dist:rot_dist+j-1] is the right part, length J - //Arr[rot_dist+j:num_elem-1] is in final position - if(I >j) { theSwap_equal_blocks (arr, rot_dist-I, Rot_dist, j); -I-=J; - } - Else { +Swap_equal_blocks (arr, rot_dist-i, rot_dist+j-I, i); -J-=i; + } A } at
2:Fig. 2 Structure diagram after reconstructionthe principle of substitution on the Richter scale is one of the important ways to realize open closed principle. In this example, you use the base class object when passing parameters, and in addition, you can use the Richter substitution principle when defining member variables, defining local variables, and determining method return types. For the base class programming, determine the specific subclass when the program runs.Add a blog post on th
character, Imagefontheight (3) is to get the height of 3rd characters per character. So
Simple, no example, and so on later in the Code also useful.
Like the output string, Imagechar and Imagecharup output a single character that is less useful and can even
No--either character or string, use imagestring and imagestringup on it!
Below, I took advantage of the part of the code that I had done to draw the stock line analysis diagram and put the preceding content system
To apply. Because it invo
mainly achieved by a technique called control inversion (IOC). The basic idea of control inversion is that the logic of the call, which is originally controlled by the application itself, is changed into passive control by external configuration file. Usually we use a so-called Hollywood principle (Don T call me.) I'll call you to figure out the relationship between this control reversal. Because the concept of control
IntroductionAs a professional programmatic trader, programming is a programmer's basic skills, this article is the author in a Futures CTP project related to the Candlestick drawing part, the trial class MT4 in the chart design and write, in the drafting, consult the relevant data, feel or use Nplot this chart control is better, features are: Free, can be used for WinForm programs, and faster, you can dynamically display the chart data in real time, t
Flexchart, tabular data can easily be visualized as a business diagram. Flexchart not only supports common chart types, such as line charts, pie charts, area charts, etc., but also supports advanced chart types such as bubble charts, candlestick charts, bar graphs, and funnel charts.
Flexchart is also very simple to use, and the Flexchart diagram delegates all data-related tasks to the CollectionView class, with the ability to filter, sort, and group
, difficulty factor:★★★★★Beyond Compare picture comparison, support two different sizes to compare, click the "View" button, select the "Autoscale" tab in the expanded menu, that is, automatically enlarge the comparison of the two sides of the picture in the relatively small picture, matching the larger picture.Next we continue to find fault, from the red label can be very simple to see the picture differences:1, the right picture of the lower left corner, more than a small red candle.2, the rig
"Message Face" Beijing time Wednesday 22:30, the U.S. Energy Information Agency (EIA) released as of July 8, the weekly crude oil inventories decreased by 2.546 million barrels, the expected value is reduced by 2.95 million barrels, before the value of 2.223 million barrels. Although the API inventory recorded an unexpected increase, but the EIA inventory has recorded the opposite trend, but gasoline and refined oil inventory growth is far greater than expected, and last week output recorded a
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