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First of all, ask you a question, how do you keep your data secure when you write an open API interface? Let's take a look at the security issues in the Open API interface, we are faced with many security issues when we request the server via HTTP POST or GET, for example: is the request source (identity) legal? The request parameter has been tampered with? The uniqueness of the request (not replicable) to prevent the request from being maliciously attacked In order to ensu

Today in the image training to find the need to put a lot of pictures to process and then read into the classifier, originally written in C + +, the results found and will not, so I use back to my favorite C #, the result is great.The code below, simple and rude, more beautiful than the online C + + syntaxusingSystem;usingSystem.IO;namespaceconsoleapplication{classProgram {Static voidMain (string[] args) { Try { st

3, then the distance between the two stars is less than 5*3+10*3=45 when the connection, greater than 45 o'clock off. If the connection magnification is set to 4, the two stars will be less than 5*4+10*4=60 when the distance is lower than the connection at 60 o'clock.Implementation and Resource shareThere are two ways to achieve star motion:1. Based on grid and TranslateTransform. Use DoubleAnimation animations to control the movement of stars.2. Based on canvas, control the x, y of canvas with

First of all, ask you a question, how do you keep your data secure when you write an open API interface? Let's take a look at the security issues in the Open API interface, we are faced with many security issues when we request the server via HTTP POST or GET, for example: is the request source (identity) legal? The request parameter has been tampered with? The uniqueness of the request (not replicable) to prevent the request from being maliciously attacked In order to ensu

Onintercepttouchevent returns True at Action_down, no message will be distributed to the child view, and the Onintercepttouchevent function will no longer be executed. if Onintercepttouchevent returns False when Action_down, and onintercepttouchevent==true in the back touch process, the parent ViewGroup will Action_ The cancel sends the child view and then no longer dispatches the message to the child view, and the Onintercepttouchevent function is no longer executed. In many cases, the custom

channel: red channel:Green Channel: blue channel:From the above four channels, we can find that the color of this image is dominated by low brightness, and the red, green, and blue colors are rarely distributed in High Brightness areas, the grayscale channel also indicates that the brightness of the entire image is very low.In the previous article, I have already told you that human eyes are most sensitive to gray scale (brightness. Therefore, if we can improve the gray scale of the image in th

and rude, but effective. The method is to add more \ n after the text.It is important to note that after \ n is added at least one space, otherwise the extra \ n will be ignored by Uilabel. From this point of view, Uilabel seems to be too "smart".The code for this method is as follows:for (int i=0; iSelf.text =[self.text stringbyappendingstring:@ "\ n"];Method Three:The most orthodox method, using the OBJECTIVE-C category feature, modifies the Uilabe

When you need to get the true height of textview, it is believed that many people will call TextView's GetHeight () method in the OnCreate function, simple and rude, indeed, this is a very convenient way, Unfortunately, TextView is not in oncreate at all, so it doesn't get the real height of the TextView, so we need to bind a listener to TextView, which is called after the render ends, as follows:Viewtreeobserver observer = Contentview.getviewtreeobse

We know that smart pointer auto_ptr is defined in the C + + standard library, but we seldom use it, because although it can automatically reclaim dynamically opened memory, it does not require the programmer to maintain the dynamically opened memory, but when it is used to assign value or copy construction, there is a management transfer process, So that we can not be very convenient to use auto_ptr.The following is a simple implementation of auto_ptr, and we can see that it will transfer manage

When I was doing a C # project, I encountered the problem of getting the number of operating system bits, and had not found a more complete solution on the internet for several hours. Not much to say, directly on the code that can be run (simple, rude)usingSystem.Runtime.ConstrainedExecution;usingSystem.Runtime.InteropServices;Internal Static classwin32native {[ReliabilityContract (Consistency.willnotcorruptstate, Cer.mayfail)] [DllImport ("Kernel32.d

Php webshell directly rebounded shell (without using any other language)In linux, sometimes obtaining the webshell requires Elevation of Privilege, And the Elevation of Privilege requires an interactive shell. I have read the commonly used php webshell, and there is no perfect method for command execution and reverse shell. Many webshells do not support proc_popen or popen, especially proc_popen, such as phpspy. In the bounce shell collection I collected (http://tool.p1ng.pw/getshell.html), ther

database is very rude, in order to ensure that the tables in the database are up to date, we simply remove all of the current tables in the Onupgrade () method and force the re-execution again onCreate () method. This method can be used in the development phase of the product, but when the product is actually online, it will definitely not work.Each database version corresponds to a version number that is entered into Onupgrade () when the specified

" android:inflatedid="@+id/panel_stub" Android:layout="@layout/progress_overlay" android:layout_width="Fill_parent" android:layout_height="Wrap_content" android:layout_gravity="Bottom" /> When you want to load a layout, you can use one of the following methods: 12 ( (viewstub findviewbyid (Rid. Stub_view) . Setvisibility (view. Visible View importpanel = ((viewstub) Findviewbyid(R. ID. Stub_view)). Inflate(); Sixth

rude.2. Multiple H1 labels are centered verticallyHTML codeCSS Code. box{ Display:flex; width:980px; Height:30rem; Align-items:center; Background: #0099cc}h1{ font-size:1rem; Padding:1rem; border:1px dashed #FFF; Color: #FFF}The above example has more than two H1 tags on the HTML code, and the style has not changed. With flex vertically centered, the element, picture, text center problem instantly vanished.Note: The DIV,H1

developers are going to be asking and probably the most frequently asked question:" How long does it take to develop such an app? "I would like to say that I do not know, this may be the most straightforward and accurate answer, but in the face of Wang, the old friend, I would be a little rude to answer, so this time, in addition to the general thinking about what he refers to the app is roughly related to what aspects, but also to organize their own

Android Studio uses JNI, so librariesAfter Android Studio1.1, as has already supported the JNI and so library, immediately released the 1.3 official version, but also can be compiled in the clion environment C, C + +, more convenient to use the NDK for development, online there are many speaking on Android The method of using JNI in studio, but mostly before 1.1, did not directly support JNI at that time, so it was necessary to add support by adding a task to gradle. And now, all this is not a t

well, it's easy to deal with the properties and states of the underlying type, and we can implement a mix and inject it into all the components directly using the comparison provided by the JS language, === in fact, react itself has provided a similar: Purerendermixin.But what if your component has a property or state that is not the underlying type, but a composite type? For example, a JS object {foo: ‘bar‘} :React.createClass({ propTypes: { value: React.PropTypes.object.isRequired

Not so troublesome, this method of mine is simple and rude:1. Search webstrom2016, the latest is 2016.32. Official Downloads3. Break the network, change the local time, how long you plan to use the local time to the future4. Installing Webstorm5. All the way to the installation, to verify the time, choose 30 days trial.6. Open Webstorm, if there is no shortcut, then go to the installation directory of the bin directory to findWarm tip: If you open the

synchronization records match, Another simple and rude way is to delete all the scripts in the Migrations directory (except __init__.py), and then delete the database and create a new database, and then redo the database synchronization operation. (use with caution)Second, ORM Common operation　1. IncreaseCreate and Save methodsObjects: This is the model default manager, create is the method inside this managerWhen you insert a primary foreign key rel

Action: @selector (Test)]; = Leftitem;// Set Right buttonUibarbuttonitem *rightitem = [[Uibarbuttonitem alloc] Initwithtitle:@ "button" = Rightitem; // Modify Titleview font Color Nsdictionary *dic = [nsdictionary dictionarywithobject:[uicolor Redcolor] forkey:nsforegroundcolorattributename] ; = Dict;The translucent effect of the navigationbar can be achieved bySelf.navigationController.navigationBar.translucent = NO;Shut down.1.3 Hide Navigationbar, custom view instead of Naviga