Tutorial by Examples: o

Orthogonal to the JRE versus JDK dichotomy, there are two types of Java release that are widely available: The Oracle Hotspot releases are the ones that you download from the Oracle download sites. The OpenJDK releases are the ones that are built (typically by third-party providers) from the Ope...

A JDK installation and a text editor are the bare minimum for Java development. (It is nice to have a text editor that can do Java syntax highlighting, but you can do without.) However for serious development work it is recommended that you also use the following: A Java IDE such as Eclipse, In...

The format statement applies the given format to the specified variable for display purposes only, i.e. the underlying value does not change. data example1 ; Date = '02AUG2016'd ; /* stored as a SAS date, i.e. a number */ Date2 = '31AUG2016'd ; format Date monyy7. Date2 yymmddn8. ; run...

In order to be able to work with C structs as Ruby objects, you need to wrap them with calls to Data_Wrap_Struct and Data_Get_Struct. Data_Wrap_Struct wraps a C data structure in a Ruby object. It takes a pointer to your data structure, along with a few pointers to callback functions, and returns a...

//Here self.webView is the view whose screenshot I need to take //The screenshot is saved in jpg format in the application directory to avoid any loss of quality in retina display devices i.e. all current devices running iOS 10 UIGraphicsBeginImageContextWithOptions(self.webView.bounds.size, N...

Idiom specific adjustments can be done from C# code, for example for changing the layout orientation whether the view is shown or a phone or a tablet. if (Device.Idiom == TargetIdiom.Phone) { this.panel.Orientation = StackOrientation.Vertical; } else { this.panel.Orientation = Stac...

Adjustments can be done for specific platforms from C# code, for example for changing padding for all the targeted platforms. if (Device.OS == TargetPlatform.iOS) { panel.Padding = new Thickness (10); } else { panel.Padding = new Thickness (20); } An helper method is also availab...

You can create custom views that can be integrated to your page thanks to those adjustment tools. Select File > New > File... > Forms > Forms ContentView (Xaml) and create a view for each specific layout : TabletHome.xamland PhoneHome.xaml. Then select File > New > File... > F...

To mark some expression as an abbreviation, use <abbr> tag: <p>I like to write <abbr title="Hypertext Markup Language">HTML</abbr>!</p> If present, the title attribute is used to present the full description of such abbreviation.

To move to split on left, use <C-w><C-h> To move to split below, use <C-w><C-j> To move to split on right, use <C-w><C-k> To move to split above, use <C-w><C-l>

It's a better experience to open split below and on right set it using set splitbelow set splitright

Source table RowABCD1CodeProductColourPrice21penred50032penblue-5043penred054pencilblue1765pencilgreen-1.5 to select all: = QUERY(A1:D5, "select *") or = QUERY(A1:D5, "select A, B, C, D") or convert data range into array and use this formula: = QUERY({A1:D5}, "sel...

Assume you want to delegate to a class but you do not want to provide the delegated-to class in the constructor parameter. Instead, you want to construct it privately, making the constructor caller unaware of it. At first this might seem impossible because class delegation allows to delegate only to...

Gson does not support inheritance out of the box. Let's say we have the following class hierarchy: public class BaseClass { int a; public int getInt() { return a; } } public class DerivedClass1 extends BaseClass { int b; @Override public int getI...

Struct defines new classes with the specified attributes and accessor methods. Person = Struct.new :first_name, :last_name You can then instantiate objects and use them: person = Person.new 'John', 'Doe' # => #<struct Person first_name="John", last_name="Doe"> p...

Person = Struct.new :name do def greet(someone) "Hello #{someone}! I am #{name}!" end end Person.new('Alice').greet 'Bob' # => "Hello Bob! I am Alice!"

Attributes can be accessed strings and symbols as keys. Numerical indexes also work. Person = Struct.new :name alice = Person.new 'Alice' alice['name'] # => "Alice" alice[:name] # => "Alice" alice[0] # => "Alice"

The first thing to do is to add the service to AndroidManifest.xml, inside the <application> tag: <application ...> ... <service android:name=".RecordingService" <!--"enabled" tag specifies Whether or not the service can ...

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...

Any list comprehension can be correspondingly coded with list monad's do notation. [f x | x <- xs] f <$> xs do { x <- xs ; return (f x) } [f x | f <- fs, x <- xs] fs <*> xs do { f <- fs ; x <- xs ; return (f x) } [y | x &...