Tutorial by Examples: v
List<Integer> nums = Arrays.asList(1, 2, 3);
List<String> strings = nums.stream()
.map(Object::toString)
.collect(Collectors.toList());
That is:
Create a stream from the list
Map each element using Object::toString
Collect the String values into a List using Collectors...
In general, UWP is used for making a single application that runs on Windows 10 across many different devices. However, it is also possible to make code tailored to specific devices. You can achieve this in several different ways.
Different XAML Layout
If you want to use a specific layout on for a...
Unlike emails, JIDs were defined with Internationalization (i18n) in mind using the
Preparation, Enforcement, and Comparison of Internationalized Strings (PRECIS) framework. PRECIS (defined in RFC 7564), is a framework for comparing strings safely in a variety of contexts. For instance, imagine you...
Below code is simple java program using selenium.
The journey of the below code is
Open Firefox browser
Open google page
Print title of Google page
Find the search box location
Pass the value as Selenium in the search box
Submit the form
Shutdown the browser
package org.openqa.selenium....
Sometimes one has to work with pages that are not using jQuery while most developers are used to have jQuery handy.
In such situations one can use Chrome Developer Tools console (F12) to manually add jQuery on a loaded page by running following:
var j = document.createElement('script');
j.onload ...
In VB.NET, every variable must be declared before it is used (If Option Explicit is set to On). There are two ways of declaring variables:
Inside a Function or a Sub:
Dim w 'Declares a variable named w of type Object (invalid if Option Strict is On)
Dim x As String 'Declares a variable named ...
Static method:
Dim parseMethod = GetType(Integer).GetMethod("Parse",{GetType(String)})
Dim result = DirectCast(parseMethod.Invoke(Nothing,{"123"}), Integer)
Instance method:
Dim instance = "hello".ToUpper
Dim method = Gettype(String).GetMethod("ToUpper&quo...
ArrayList is one of the inbuilt data structures in Java. It is a dynamic array (where the size of the data structure not needed to be declared first) for storing elements (Objects).
It extends AbstractList class and implements List interface. An ArrayList can contain duplicate elements where it mai...
This example assumes that your lookup column is named MultiLookupColumnName and that you want to set your multi-lookup field to lookup to the items with IDs 1 and 2.
Using jQuery AJAX
2010
var listName = "YourListName";
var lookupList = "LookupListName";
var idOfItemToUpdate...
Ionic 1.2 officially supports deployment as a website
If you're not using any Cordova plugins then there is no problem (if you really wish to) to upload the contents of the www folder to your server, and woila - you'll have the same app.
However, it is important to note that Ionic 1 never intended...
A Cordova application runs as a website on a WebView component within the native mobile platform. Debugging a cordova application can therefore be done by utilizing your favourite browsers development tools. The following steps are needed to hook the application, running on the device, to the Chrome...
You can render the contents of an SVG file as an image within an HTML document using an <img> tag. For example:
<img src="my_svg_file.svg" alt="Image description">
The dimensions of the image will, by default, display according to the width and height properties s...
When to use abstract classes: To implement the same or different behaviour among multiple related objects
When to use interfaces: to implement a contract by multiple unrelated objects
Abstract classes create "is a" relations while interfaces provide "has a" capability.
This c...
sudo apt-add-repository ppa:brightbox/ruby-ng
Hit Enter to confirm
sudo apt-get update
Then you can install your ruby version of choice (the ppa supports ruby2.0 ruby2.1 ruby2.2 ruby2.3 and legacy versions ruby1.8 ruby1.9.1) Don't forget to include the respective -dev package for your version. Ot...
Bridge pattern decouples abstraction from implementation so that both can vary independently. It has been achieved with composition rather than inheritance.
Bridge UML diagram from wikipedia:
You have four components in this pattern.
Abstraction: It defines an interface
RefinedAbstraction: It ...
example:
df = pd.DataFrame({'group1' : ['A', 'A', 'A', 'A',
'B', 'B', 'B', 'B'],
'group2' : ['C', 'C', 'C', 'D',
'E', 'E', 'F', 'F'],
'B' : ['one', np.NaN, np.NaN, np.NaN,
...
# example data
DT = data.table(iris)
DT[, Bin := cut(Sepal.Length, c(4,6,8))]
To apply the same summarizing function to every column by group, we can use lapply and .SD
DT[, lapply(.SD, median), by=.(Species, Bin)]
# Species Bin Sepal.Length Sepal.Width Petal.Length Petal.Width
# 1...
JUnit is the leading testing framework used for testing Java code.
The class under test models a simple bank account, that charges a penalty when you go overdrawn.
public class BankAccount {
private int balance;
public BankAccount(int i){
balance = i;
}
public Bank...
Problem
There is a series of repeating elements in page that you need to know which one an event occurred on to do something with that specific instance.
Solution
Give all common elements a common class
Apply event listener to a class. this inside event handler is the matching selector elemen...
Be aware that Microsoft Excel 2013 (and higher) uses Single Document
Interface (SDI) and that Excel 2010 (And below) uses Multiple Document
Interfaces (MDI).
This implies that for Excel 2013 (SDI), each workbook in a single instance of Excel contains its own ribbon UI:
Conversely for Excel...
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