Tutorial by Examples: x

UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(0, 0, 320, 480)]; label.backgroundColor=[UIColor lightGrayColor]; NSMutableAttributedString *attributedString; attributedString = [[NSMutableAttributedString alloc] initWithString:@"Apply Underlining"]; [attributedString addAttrib...

Typically trying to extend the parent like so: .parent { style: value; @extend &; } Will result in an error, stating that the parent cannot be extended. This makes sense, but there's a workaround. Simply store the parent selector in a variable. .parent { $parent: &; style...

Background: The Household entity includes a set of options, each of which is an entity that is managed in an admin backend. Each option has a boolean enabled flag. If a previously enabled option is set to disabled it will need to be persisted in later Household edits, but cannot be edited away. T...

In order to emphasize text the command \emph can be used which usually displays the text in an italics font: This is some text with \emph{emphasized words}.

The command \sout of the package ulem strikes through a text: \sout{This text is striked through} The package ulem redefines the command \emph. When you do not want to have this behavior you can use the package ulem with the option normalem: \usepackage[normalem]{ulem}

Catching exceptions in Kotlin looks very similar to Java try { doSomething() } catch(e: MyException) { handle(e) } finally { cleanup() } You can also catch multiple exceptions try { doSomething() } catch(e: FileSystemException) { handle(e) } catch(e: Network...

Dictionaries are great for managing information where multiple entries occur, but you are only concerned with a single value for each set of entries — the first or last value, the mininmum or maximum value, an average, a sum etc. Consider a workbook that holds a log of user activity, with a script ...

Most examples of a function returning a value involve providing a pointer as one of the arguments to allow the function to modify the value pointed to, similar to the following. The actual return value of the function is usually some type such as an int to indicate the status of the result, whether ...

//Enabling the proximity Sensor - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [[UIDevice currentDevice] setProximityMonitoringEnabled:YES]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sensorStateMonitor:) name:@"UIDevice...

This example uses the official Google .net Client library. PM> Install-Package Google.Apis.AnalyticsReporting.v4 Authorization Requires one of the following OAuth scopes: https://www.googleapis.com/auth/analytics.readonly https://www.googleapis.com/auth/analytics Oauth2 // The...

API requests are HTTP POST with the access token attached at the end of the API end point. Authorization Requires one of the following OAuth scopes: https://www.googleapis.com/auth/analytics.readonly https://www.googleapis.com/auth/analytics Note when posting the data use ContentType = &...

HanlderManager providing: public class HandlerManagerProvider { private static HandlerManager handlerManager; private HandlerManagerProvider() { } public static HandlerManager get() { return handlerManager != null ? handlerManager : (handlerManager =...

Objective-C Just log this see how to use a particular filter NSArray *properties = [CIFilter filterNamesInCategory:kCICategoryBuiltIn]; for (NSString *filterName in properties) { CIFilter *fltr = [CIFilter filterWithName:filterName]; NSLog(@"%@", [fltr a...

Note: at is not installed by default on most of modern distributions. To execute a job once at some other time than now, in this example 5pm, you can use echo "somecommand &" | at 5pm If you want to catch the output, you can do that in the usual way: echo "somecommand > o...

Find f(n): nth Fibonacci number. The problem is quite easy when n is relatively small. We can use simple recursion, f(n) = f(n-1) + f(n-2), or we can use dynamic programming approach to avoid the calculation of same function over and over again. But what will you do if the problem says, Given 0 <...

Sometimes we want to use a where query on a a collection of records returned which is not ActiveRecord::Relation.Hence we get the above error as Where clause is know to ActiveRecord and not to Array. There is a precise solution for this by using Joins. EXAMPLE:- Suppose i need to find all user ...

Consider the following Java classes: class Foo { private Bar bar; public void foo() { bar.baz(); } } As can be seen, the class Foo needs to call the method baz on an instance of another class Bar for its method foo to work successfully. Bar is said to be a dependency for Foo sin...

Dependencies can be autowired when using the component scan feature of the Spring framework. For autowiring to work, the following XML configuration must be made: <context:annotation-config/> <context:component-scan base-package="[base package]"/> where, base-package is th...

Calls to the Metadata API are with HTTP Get: Using Public API Key GET https://www.googleapis.com/analytics/v3/metadata/ga/columns?key={YOUR_API_KEY} Using Access token from either Oauth2 or Service account authentication GET https://www.googleapis.com/analytics/v3/metadata/ga/columns?acces...

uses the Java Client library /** * 1. Execute a Metadata Request * An application can request columns data by calling the list method on the Analytics service object. * The method requires an reportType parameter that specifies the column data to retrieve. * For example, the following code ...