Using some setters, without setting all needed properties in the constructor(s)
public final class Person { // example of a bad immutability
private final String name;
private final String surname;
public Person(String name) {
this.name = name;
}
public String ge...
JasperSoft Studio
If datasource or database connection is needed to fill report, create your Data Adapter
in Repository Explorer by right clicking "Data Adapters" selecting "Create Data Adapter"
Enter preview mode by selecting the Preview tab (no errors in deign need t...
When working with Azure using PowerShell there are 2 different ways you should be aware of and you will see a lot of the Microsoft documentation referring to both of them:
"Classic mode (Service Management)"
This is the old way of operating Azure and managing Azure. There is still some s...
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...
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...
# 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...
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...
function processGoogleDriveFolders() {
var arrayAllFolderNames,continuationToken,folders,foldersFromToken,thisFolder;//Declare variable names
arrayAllFolderNames = [];//Create an empty array and assign it to this variable name
folders = DriveApp.getFolders();//Get all folders from ...
function processGoogleDriveFiles() {
var arrayAllFileNames,continuationToken,files,filesFromToken,fileIterator,thisFile;//Declare variable names
arrayAllFileNames = [];//Create an empty array and assign it to this variable name
files = DriveApp.getFiles();//Get all files from Googl...
While server side-code can run with elevated privileges, there is not an equivalent method to elevate privileges in client-side code (for obvious security reasons). As an alternative, you can specify credentials to emulate the access of a specific user or service account.
To specify credentials, bu...
--dataset schemas must be identical
SELECT 'Data1' as 'Column' UNION ALL
SELECT 'Data2' as 'Column' UNION ALL
SELECT 'Data3' as 'Column' UNION ALL
SELECT 'Data4' as 'Column' UNION ALL
SELECT 'Data5' as 'Column'
EXCEPT
SELECT 'Data3' as 'Column'
--Returns Data1, Data2, Data4, and Data5
When you show a location to your users, you might want the MKMapView to display a coordinate at a zoom-level instead of setting a region to show. This functionality is not implemented by default, so you need to extend MKMapView with a methods that do the complex calculation from a coordinate and zoo...
Instance variables have an object wide scope, they can be declared anywhere in the object, however an instance variable declared on class level, will only be visible in the class object. A variable will be considered an instance variable when prefixed with @. Instance variables are used to set and g...
The easiest way to install and manage various versions of Ruby with rbenv is to use the ruby-build plugin.
First clone the rbenv repository to your home directory:
$ git clone https://github.com/rbenv/rbenv.git ~/.rbenv
Then clone the ruby-build plugin:
$ git clone https://github.com/rbenv/rub...
ScopedTypeVariables let you refer to universally quantified types inside of a declaration. To be more explicit:
import Data.Monoid
foo :: forall a b c. (Monoid b, Monoid c) => (a, b, c) -> (b, c) -> (a, b, c)
foo (a, b, c) (b', c') = (a :: a, b'', c'')
where (b'', c'') = (b <&g...
PHP's source code is hosted on GitHub. To build from source you will first need to check out a working copy of the code.
mkdir /usr/local/src/php-7.0/
cd /usr/local/src/php-7.0/
git clone -b PHP-7.0 https://github.com/php/php-src .
If you want to add a feature, it's best to create your own bra...
Given the following XML document:
<documentation>
<tags>
<tag name="Java">
<topic name="Regular expressions">
<example>Matching groups</example>
<example>Escaping metacharacter...
