A behavior based animation allows you to specify that when a property changes the change should be animated over time.
ProgressBar {
id: progressBar
from: 0
to: 100
Behavior on value {
NumberAnimation {
duration: 250
}
}
}
In this example ...
int[string] aa = ["x": 5, "y": 6];
// The value can be set by its key:
aa["x"] = 7;
assert(aa["x"] == 7);
// if the key does not exist will be added
aa["z"] = 8;
assert(aa["z"] == 8);
Let's assume an associative array aa:
int[string] aa = ["x": 5, "y": 6];
Items can be removed by using .remove(), if key exits will be removed and remove returns true:
assert(aa.remove("x"));
if the given key does not exist remove does nothing and returns false:...
The StretchViewport is a Viewporttype, which supports a virtual screen size.
This allowes you to define a fixed (resolution independent) width and height.
The StretchViewport, as the name suggests, stretches the virtual screen, if the virtual aspect ratio does not match the real aspect ratio. The ...
An element containing a single child, with some framing options. Frame have a default Xamarin.Forms.Layout.Padding of 20.
XAML
<Frame>
<Label Text="I've been framed!"
HorizontalOptions="Center"
VerticalOptions="Center" />
</Frame>
Code
var ...
An element capable of scrolling if it's Content requires.
ScrollView contains layouts and enables them to scroll offscreen. ScrollView is also used to allow views to automatically move to the visible portion of the screen when the keyboard is showing.
Note: ScrollViews should not be nested. In a...
A layout containing views arranged in rows and columns.
This is a typical Grid definition in XAML.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="2*" />
<RowDefinition Height="*" />
<RowDefinition Height="200" />
...
A Layout that uses Constraints to layout its children.
RelativeLayout is used to position and size views relative to properties of the layout or sibling views. Unlike AbsoluteLayout, RelativeLayout does not have the concept of the moving anchor and does not have facilities for positioning elements ...
Open "Database Tool Window" if you don't have it opened:
This what it looks like:
Create new data source:
By clicking on "+" icon:
Or by opening "Data Sources and Drivers" dialog
And adding new data source by clicking "+" there
If you ...
Authentication can be set for an specific APIView endpoint, by using the authentication_classes variable:
from rest_framework.authentication import SessionAuthentication, BasicAuthentication
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
...
The most interesting package for managing real tokens is django-rest-knox which supports multiple tokens per user (and cancelling each token independently), as well as having support for token expiration and several other security mechanisms.
django-rest-knox depends on cryptography. You can find m...
A simple example of Vehicle hierarchy can be taken for single table inheritance strategy.
Abstract Vehicle class:
package com.thejavageek.jpa.entities;
import javax.persistence.DiscriminatorColumn;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persi...
Simplicity
Probably the best part of CoffeeScript is its simplicity. CoffeeScript allows for a more concise and simplistic syntax than plain JavaScript. One simple but surprisingly time-saving feature is that CoffeeScript has no need for ; or {}, eliminating the need to spend hours finding out the ...
Static initialization is suitable for most situations. When your application must delay the instantiation, use a non-default constructor or perform other tasks before the instantiation, and work in a multithreaded environment, you need a different solution. Cases do exist, however, in which you cann...
You must always unregister scopes other then your current scope as shown below:
//always deregister these
$rootScope.$on(...);
$scope.$parent.$on(...);
You don't have to deregister listners on current scope as angular would take care of it:
//no need to deregister this
$scope.$on(...);
$r...
