Tutorial by Examples: g

The background-repeat property sets if/how a background image will be repeated. By default, a background-image is repeated both vertically and horizontally. div { background-image: url("img.jpg"); background-repeat: repeat-y; } Here's how a background-repeat: repeat-y looks lik...

function randomAngle():Number { return (Math.random() * 360); } Example outputs: 31.554428357630968 230.4078639484942 312.7964010089636

To ignore a file foo.txt in any directory you should just write its name: foo.txt # matches all files 'foo.txt' in any directory If you want to ignore the file only in part of the tree, you can specify the subdirectories of a specific directory with ** pattern: bar/**/foo.txt # matches all file...

Example that builds an executable (editor) and links a library (highlight) to it. Project structure is straightforward, it needs a master CMakeLists and a directory for each subproject: CMakeLists.txt editor/ CMakeLists.txt src/ editor.cpp highlight/ CMakeLists.txt in...

Travis CI has CMake 2.8.7 pre-installed. A minimal .travis.yml script for an out-of source build language: cpp compiler: - gcc before_script: # create a build folder for the out-of-source build - mkdir build # switch to build directory - cd build # run cmake; here we assume...

The CMake version preinstalled on Travis is very old. You can use the official Linux binaries to build with a newer version. Here is an example .travis.yml: language: cpp compiler: - gcc # the install step will take care of deploying a newer cmake version install: # first we creat...

int a = 1; int *a_pointer = &a; To dereference a_pointer and change the value of a, we use the following operation *a_pointer = 2; This can be verified using the following print statements. printf("%d\n", a); /* Prints 2 */ printf("%d\n", *a_pointer); /* Also prints...

If you need a completely customized view, you'll need to subclass View (the superclass of all Android views) and provide your custom sizing (onMeasure(...)) and drawing (onDraw(...)) methods: Create your custom view skeleton: this is basically the same for every custom view. Here we create the...

Custom views can also take custom attributes which can be used in Android layout resource files. To add attributes to your custom view you need to do the following: Define the name and type of your attributes: this is done inside res/values/attrs.xml (create it if necessary). The following file...

Destructuring allows us to refer to one key in an object, but declare it as a variable with a different name. The syntax looks like the key-value syntax for a normal JavaScript object. let user = { name: 'John Smith', id: 10, email: '[email protected]', }; let {user: userName, id: us...

It is important for someone traversing through the git log to easily understand what each commit was all about. Good commit messages usually include a number of a task or an issue in a tracker and a concise description of what has been done and why, and sometimes also how it has been done. Better m...

One way to create a macro is to record it. Start recording a macro and save it to a register (in this example, we'll use a, but it can be any register you could normally yank text to): qa Then run the commands you want to record in the macro (here, we'll surround the contents of a line with &lt...

public class LogActionFilter : ActionFilterAttribute { public override void OnActionExecuting(ActionExecutingContext filterContext) { Log("OnActionExecuting", filterContext.RouteData); } public override void OnActionExecuted(ActionExecute...

Load content in webview from the url Swift webview.loadRequest(NSURLRequest(URL: NSURL(string: "http://www.google.com")!)) Objective-C [webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.google.com"]]];

The library CL-PPCRE provides the function split which allows us to split strings in substrings that match a regular expression, discarding the parts of the string that do not. (cl-ppcre:split "\\." "127.0.0.1") ;; => ("127" "0" "0" "1&quot...

std::async is also able to make threads. Compared to std::thread it is considered less powerful but easier to use when you just want to run a function asynchronously. Asynchronously calling a function #include <future> #include <iostream> unsigned int square(unsigned int i){ r...

Calling an instance method: [classInstance hello]; @interface Sample -(void)hello; // exposing the class Instance method @end @implementation Sample -(void)hello{ NSLog(@"hello"); } @end Calling an instance method on the current instance: [self hell...

Abstract classes are classes that are meant to be inherited but avoid implementing specific methods, leaving behind only method signatures that subclasses must implement. Abstract classes are useful for defining and enforcing class abstractions at a high level, similar to the concept of interfaces ...

@implemenetation Triangle ... -(void)setAngles:(NSArray *)_angles { self.angles = _angles; NSAssert((self.angles.count == 3), @"Triangles must have 3 angles. Array '%@' has %i", self.angles, (int)self.angles.count); CGFloat angleA = [self.angles[0] floatVal...

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