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Using Oracle SQL’s NVL2() function, you can create a display column which contains one value if a field contains data and another value if a field does not contain data. For example, in an Entity search, turn the presence of a primary e-mail address into a text display column: NVL2( {email} , 'YES...

Firebase handles notifications differently when the app is in background (killed process) and when in foreground (active). When your app is in the background, notification messages are displayed in the system tray, and onMessageReceived is not called. For notification messages with a data payload...

<http:listener-config name="HTTP_Listener_Configuration" host="localhost" port="${http.port}" doc:name="HTTP Listener Configuration"/> <db:mysql-config name="MySQL_Configuration" host="${db.host}" port="${db.port}"...

Application visits are initiated by clicking a Turbolinks-enabled link, or programmatically by calling Turbolinks.visit(location) By default, the visit function uses the 'advance' action. More understandably, the default behavior for the visit function is to advance to the page indicated by the ...

Turbolinks provides an event listener that can be used to stop visits from occurring. Listen to the turbolinks:before-visit event to be notified when a visit is about to commence. In the event handler, you can use: // pure javascript event.data.url or // jQuery $event.originalEvent.data.url...

Go to the DOWNLOAD ANACONDA NOW page. Beneath the “Graphical Installer” buttons for Anaconda for macOS, there are command-line text links for Python versions 2.7 and 3.6. Download the command line installer for Anaconda with Python 2.7 or Anaconda with Python 3.6. Optional: Verify data integrity w...

$pwd Displays the present working directory. $who Displays all the users logged in. $who am i Shows the username of the current user. $date Displays the current system date $which <command> Shows the path of the specified command. For example "$which pwd" will sho...

Optionals type, which handles the absence of a value. Optionals say either "there is a value, and it equals x" or "there isn't a value at all". An Optional is a type on its own, actually one of Swift’s new super-powered enums. It has two possible values, None and Some(T), where ...

on your elements.html file, run the following commands: cd PATH/TO/IMPORTFILE/ vulcanize elements.html -o elements.vulc.html --strip-comments --inline-css --inline-js crisper --source elements.vulc.html --html build.html --js build.js Vulcanize retrieved source code of all the imports, then re...

CleverTapAPI cleverTap; try { cleverTap = CleverTapAPI.getInstance(getApplicationContext()); } catch (CleverTapMetaDataNotFoundException e) { // thrown if you haven't specified your CleverTap Account ID or Token in your AndroidManifest.xml } catch (CleverTapPermissionsNotSatisfied e) { /...

If you try and create a recursive enum in Rust without using Box, you will get a compile time error saying that the enum can't be sized. // This gives an error! enum List { Nil, Cons(i32, List) } In order for the enum to have a defined size, the recursively contained value must be in...

func loginHandler(w http.ResponseWriter, r *http.Request) { // Steps to login } func main() { http.HandleFunc("/login", loginHandler) http.ListenAndServe(":8080", nil) }

// logger middlerware that logs time taken to process each request func Logger(h http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { startTime := time.Now() h.ServeHttp(w,r) endTime := time.Since(startTime) log...

func Recovery(h http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request){ defer func() { if err := recover(); err != nil { // respondInternalServerError } }() h.ServeHTTP(w , r) }...

If all you need is serializing mongo results into json, it is possible to use the json module, provided you define custom handlers to deal with non-serializable fields types. One advantage is that you have full power on how you encode specific fields, like the datetime representation. Here is a ha...

new Vue({ el:"#star-wars-people", data:{ people: null }, mounted: function(){ $.getJSON("http://swapi.co/api/people/", data => this.people = data.results); } }) Caution! Arrow functions are a syntax introduced in Ecmascript 2015. It is not yet supp...

new Vue({ el:"#app", data:{ foo: "bar" }, methods:{ // This is wrong! Arrow functions capture "this" lexically // and "this" will refer to the window. doSomething: () => this.foo = "baz" } })

This example shows how you can install and run WSO2 API Manager in your machine. For this example API Manager 2.1.0 version is used. You can install WSO2 API Manager in two ways. Download the API Manager product from product website. Checkout the source code from GitHub, build the source code ...

Copying files copy copies the source file in the first argument to the destination in the second argument. The resolved destination needs to be in a directory that is already created. if (copy('test.txt', 'dest.txt')) { echo 'File has been copied successfully'; } else { echo 'Failed to ...

Steps: Create Empty .Net Core Web App: Go to wwwroot, and create a normal html page called Index.html: Configure Startup.cs to accept static files (this will require to add "Microsoft.AspNetCore.StaticFiles": "1.0.0" library in the “project.json” file): ...