Tutorial by Examples: er

When using a defer-statement, make sure the code remains readable and the execution order remains clear. For example, the following use of the defer-statement makes the execution order and the function of the code hard to comprehend. postfix func ++ (inout value: Int) -> Int { defer { value...

The image contained in the ImageView may not fit the exact size given to the container. In that case, the framework allows you to resize the image in a number of ways. Center <ImageView android:layout_width="20dp" android:layout_height="20dp" andr...

Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to or larger than the corresponding dimension of the view (minus padding). Official Docs When the image matches the proportions of the container: When the image is...

Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to or less than the corresponding dimension of the view (minus padding). Official Docs It will center the image and resize it to the smaller size, if both container s...

Scale the image using CENTER. Official Docs This expands the image to try to match the container and it will align it to the center, it will fit to the smaller size. Bigger height ( fit to width ) Same width and height.

This is a client-server example. The process forks and runs client in the parent process and server in the child process: client connects to server and waits until server exits; server accepts connection from client, enables keepalive, and waits any signal. Keepalive is configured using the f...

When write() is called for a named or unnamed pipe or stream socket whose reading end is closed, two things happen: POSIX.1-2001 SIGPIPE signal is sent to the process that called write() POSIX.1-2004 SIGPIPE signal is sent to the thread that called write() EPIPE error is returned ...

This is a TCP daytime iterative server kept as simple as possible. #include <sys/types.h> /* predefined types */ #include <unistd.h> /* unix standard library */ #include <arpa/inet.h> /* IP addresses conversion utilities */ #include <netinet/in.h> /* sockaddr...

If, during the conversion of: an integer type to a floating point type, a floating point type to an integer type, or a floating point type to a shorter floating point type, the source value is outside the range of values that can be represented in the destination type, the result is undefine...

function onButtonClick() { navigator.bluetooth.requestDevice({filters: [{services: ['battery_service']}]}) .then(device => { // Connecting to GATT Server... return device.gatt.connect(); }) .then(server => { // Getting Battery Service... return server.getPri...

function onButtonClick() { navigator.bluetooth.requestDevice({filters: [{services: ['heart_rate']}]}) .then(device => { // Connecting to GATT Server... return device.gatt.connect(); }) .then(server => { // Getting Heart Rate Service... return server.getP...

Jersey is one of the many frameworks available to create Rest Services, This example will show you how to create Rest Services using Jersey and Spring Boot 1.Project Setup You can create a new project using STS or by using the Spring Initializr page. While creating a project, include the followi...

All proxy services events are logged in the wso2carbon log file (located in %CARBON_HOME%/repository/logs). If you want, you can have separate log files for each proxy service. Keep in mind, though, that they will still be logged in wso2carbon log file as well. To do so, you should change the log4...

To check if a method was called on a mocked object you can use the Mockito.verify method: Mockito.verify(someMock).bla(); In this example, we assert that the method bla was called on the someMock mock object. You can also check if a method was called with certain parameters: Mockito.verify(som...

While you can use the NSUserDefaults methods anywhere, it can sometimes be better to define a manager that saves and reads from NSUserDefaults for you and then use that manager for reading or writing your data. Suppose that we want to save a user’s score into NSUserDefaults. We can create a class ...

Setting overflow value to hidden,auto or scroll to an element, will clear all the floats within that element. Note: using overflow:scroll will always show the scrollbox

Sitecore Instance Manager is open-source tool which is used for managing the local park of Sitecore instances. You can install, locate, maintain, reinstal or delete Sitecore products. It also helps you install your sitecore instance with any sitecore packages, modules and only thing you need to do i...

CREATE TABLE new_table_name LIKE existing_table_name;

What you need is to get an entitlements file so the app can access your iCloud and write records using CloudKit. Follow the steps to grant access to iCloud from your app: 1- Select the project in the Project Navigator, and then open the General tab. 2- In the Identity section, set your developer ...

HTML <div> This div is too small to display its contents to display the effects of the overflow property. </div> CSS div { width:100px; height:100px; overflow:scroll; } Result The content above is clipped in a 100px by 100px box, with scrolling available ...