Tutorial by Examples: l

To broaden the selections of a structured query language (SQL-SELECT) statement, wildcard characters, the percent sign (%) and the underscore (_), can be used. The _ (underscore) character can be used as a wildcard for any single character in a pattern match. Find all employees whose Fname start w...

Say you want to perform in action (in this case, logging "Foo"), while doing something else (logging "Bar"). Normally, if you don't use concurrency, one of these actions is going to be fully executed, and the other run will run only after it's completely finished. But with concur...

From the official documentation: With Gradle: repositories { mavenCentral() // jcenter() works as well because it pulls from Maven Central } dependencies { compile 'com.github.bumptech.glide:glide:4.0.0' compile 'com.android.support:support-v4:25.3.1' annotationProcessor 'com.githu...

ImageView To load an image from a specified URL, Uri, resource id, or any other model into an ImageView: ImageView imageView = (ImageView) findViewById(R.id.imageView); String yourUrl = "http://www.yoururl.com/image.png"; Glide.with(context) .load(yourUrl) .into(imageView);...

The services lifecycle has the following callbacks onCreate() : Executed when the service is first created in order to set up the initial configurations you might need. This method is executed only if the service is not already running. onStartCommand() : Executed every time startService...

In short: XPages is part of IBM Domino Designer. Extra setup or installation isn't required for XPages. First XPage / Hello-World-Example To create your first XPage you have to create a new NSF first. Open the IBM Domino Designer, and open the menu "File" -> "New" -> &...

Create a simple table create table MY_table ( what varchar2(10), who varchar2(10), mark varchar2(10) ); Insert values (you can omit target columns if you provide values for all columns) insert into my_table (what, who, mark) values ('Hello', 'world', '!' ); insert into my_table ...

You can create a new class that inherits from HashSet: Set<String> h = new HashSet<String>() {{ add("a"); add("b"); }}; One line solution: Set<String> h = new HashSet<String>(Arrays.asList("a", "b")); Using guava: Se...

Variables inside single quotes ' don't get expanded by POSIX compatible shells, so using a shell variable in a sed substitution requires the use of double quotes " instead of single quotes ': $ var="he" $ echo "hello" | sed "s/$var/XX/" XXllo $ var="he&q...

c := exec.Command(name, arg...) b := &bytes.Buffer{} c.Stdout = b c.Stdin = stdin if err := c.Start(); err != nil { return nil, err } timedOut := false intTimer := time.AfterFunc(timeout, func() { log.Printf("Process taking too long. Interrupting: %s %s", name, strings...

// Execute a command a capture standard out. exec.Command creates the command // and then the chained Output method gets standard out. Use CombinedOutput() // if you want both standard out and standerr output out, err := exec.Command("echo", "foo").Output() if err != nil { ...

Generally, the syntax is: SELECT <column names> FROM <table name> WHERE <condition> For example: SELECT FirstName, Age FROM Users WHERE LastName = 'Smith' Conditions can be complex: SELECT FirstName, Age FROM Users WHERE LastName = 'Smith' AND (City = 'New York' OR C...

A header file may be included by other header files. A source file (compilation unit) that includes multiple headers may therefore, indirectly, include some headers more than once. If such a header file that is included more than once contains definitions, the compiler (after preprocessing) dete...

In a nutshell, conditional pre-processing logic is about making code-logic available or unavailable for compilation using macro definitions. Three prominent use-cases are: different app profiles (e.g. debug, release, testing, optimised) that can be candidates of the same app (e.g. with extra log...

In PowerShell, there are many ways to achieve the same result. This can be illustrated nicely with the simple & familiar Hello World example: Using Write-Host: Write-Host "Hello World" Using Write-Output: Write-Output 'Hello world' It's worth noting that although Write-Outp...

./mongo localhost:27017/mydb myjsfile.js Explanation: This operation executes the myjsfile.js script in a mongo shell that connects to the mydb database on the mongod instance accessible via the localhost interface on port 27017. localhost:27017 is not mandatory as this is the default port mongo...

To make all the characters in a String uppercase or lowercase: 2.2 let text = "AaBbCc" let uppercase = text.uppercaseString // "AABBCC" let lowercase = text.lowercaseString // "aabbcc" 3.0 let text = "AaBbCc" let uppercase = text.uppercased() // &qu...

Basic installation: You can download redux javascript file, using this link. Also you can install redux, using bower : bower install https://npmcdn.com/redux@latest/dist/redux.min.js Next, you need to include redux to your page: <html> <head> <script type="text/jav...

In order to filter out values from an array and obtain a new array containing all the values that satisfy the filter condition, you can use the array_filter function. Filtering non-empty values The simplest case of filtering is to remove all "empty" values: $my_array = [1,0,2,null,3,'',...

$collection = Mage::getModel('catalog/product')->getCollection(); $collection->addAttributeToFilter('sku', array('like' => 'UX%'));