Tutorial by Examples: bindings



C++17 C++17 introduces structured bindings, which makes it even easier to deal with multiple return types, as you do not need to rely upon std::tie() or do any manual tuple unpacking: std::map<std::string, int> m; // insert an element into the map and check if insertion succeeded auto [i...
It is possible to bind values to names using @: struct Badger { pub age: u8 } fn main() { // Let's create a Badger instances let badger_john = Badger { age: 8 }; // Now try to find out what John's favourite activity is, based on his age match badger_john.age { ...
A namespace binding (special xmlns or xmlns:... attribute) is in scope for all the descendants of the enclosing element, including this element. <?xml version="1.0"?> <root> <my:element xmlns:my="http://www.example.com/ns1"> <!-- here, the prefix my...
Consider this simple example: import QtQuick 2.7 import QtQuick.Controls 2.0 ApplicationWindow { visible: true width: 400 height: 640 Rectangle{ id: rect anchors.centerIn: parent height: 100 width: parent.width color: "blue...
Basic usage of dependency injection is done by the annotations. When you need to tweak things a little bit, you need custom code to further specify how you want some classes to be instantiated and injected. This code goes in what is called a Module. import com.google.inject.AbstractModule // Pla...
One should have in mind that: Angular's data binding relies on JavaScript’s prototypal inheritance, thus it's subject to variable shadowing. A child scope normally prototypically inherits from its parent scope. One exception to this rule is a directive which has an isolated scope as it doesn't p...
To change UI content in runtime, you can use Binding. When binded property is changed from the code, it will be displayed to the UI. <TextBlock Text="{Binding Title}"/> To notify UI about changes, property must raise PropertyChanged event from INotifyPropertyChanged interface or ...
Binding to the browser native style attribute using Aurelia. If using string interpolation, you should use the css alias so styling works in Internet Explorer. Style String export class MyViewModel { constructor() { this.styleString = 'color: #F2D3D6; background-color: #333'; } } &l...
Databings are essential for working with XAML. The XAML dialect for UWP apps provides a type of binding: the {x:Bind} markup extension. Working with {Binding XXX} and {x:Bind XXX} is mostly equivalent, with the difference that the x:Bind extension works at compile time, which enables better debuggi...
Pressing C-h a will run the emacs function apropos-command which makes emacs prompt for words (or a regexp) to search for. It will then show a buffer containing a list of names and descriptions related to that topic, including key bindings for each of the functions available via keystrokes. Pressin...
build.gradle: dependencies { compile 'com.android.support:appcompat-v7:23.3.0' compile 'com.jakewharton.rxbinding:rxbinding-appcompat-v7:0.4.0' } menu/menu.xml: <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.c...
List comprehensions can introduce local bindings for variables to hold some interim values: [(x,y) | x <- [1..4], let y=x*x+1, even y] -- [(1,2),(3,10)] Same effect can be achieved with a trick, [(x,y) | x <- [1..4], y <- [x*x+1], even y] -- [(1,2),(3,10)] The let in list compr...
With the bind command it is possible to define custom key bindings. The next example bind an Alt + w to >/dev/null 2>&1: bind '"\ew"':"\" >/dev/null 2>&1\"" If you want to execute the line immediately add \C-m (Enter) to it: bind '"\ew&quo...
Observable.combineLatest(firstName.rx_text, lastName.rx_text) { $0 + " " + $1 } .map { "Greetings, \($0)" } .bindTo(greetingLabel.rx_text) Using the combineLatest operator every time an item is emitted by either of two Observables, combine the latest item emitted by each Obs...
When making a bind of something, for example a date you may want to show it in a specific format without messing around with it in the code. To do this we can use the StringFormat property. Here are some examples: Text="{Binding Path=ReleaseDate, StringFormat=dddd dd MMMM yyyy}" This...
Emacs' documentation uses a consistent notation for all key bindings, which is explained here: Key chords A "key chord" is obtained by pressing two or more keys simultaneously. Key chords are denoted by separating all keys by dashes (-). They usually involve modifier keys, which are put ...
When using instances of QML files by directly declaring them, every property creates a binding. This is explained in the above examples. This is how you dynamically create components: var component = Qt.createComponent("Popup.qml"); var popup = component.createObject(parent, {"widt...
To cycle the level of outline shown: Tab Cycle outline level for one heading Shift-Tab Cycle outline level for the whole document To cycle through TODO states: Shift-Right Arrow Shift-Left Arrow To increase or decrease hierarchical level for a heading Meta-Right Arrow Make lower le...
/* * This example show some ways of using std::function to call * a) C-like function * b) class-member function * c) operator() * d) lambda function * * Function call can be made: * a) with right arguments * b) argumens with different order, types and count */ #include &lt...
Not everything in a bindings library will have the same name in C# as it does in Java. In C#, interface names start with "I", but Java has no such convention. When you import a Java library, an interface named SomeInterface will become ISomeInterface. Similarly, Java doesn't have propert...

Page 1 of 2