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There are two ever-so-slightly different engines of regular expressions implemented in R. The default is called POSIX-consistent; all regex functions in R are also equipped with an option to turn on the latter type: perl = TRUE. Look-ahead/look-behind perl = TRUE enables look-ahead and look-behind...

(->) is a simple example of a profunctor: the left argument is the input to a function, and the right argument is the same as the reader functor instance. instance Profunctor (->) where lmap f g = g . f rmap f g = g . g

Example 1, Query: SELECT char_length('ABCDE') Result: 5 Example 2, Query: SELECT character_length('ABCDE') Result: 5

The method of SQL generation from BQL PXSelectGroupBy<> data views has been changed in Acumatica Framework 5.2. The sections below illustrate the differences using the example of PXSelectGroupBy<FinYear, Aggregate<GroupBy<FinYear.finPeriods>>>.Select(graph): Acumatica Frame...

Detailed instructions on getting mpandroidchart set up or installed.

You can use any IDE and OOP language to implement S.O.L.I.D Principles. In the sample code I have used C# as it is the most widely used language in .NET word and is closely resembles Java and C++.

Existing legends can be difficult to manage. For example, if your plot has two lines, but only one of them has a legend entry and that should stay this way, then adding a third line with a legend entry can be difficult. Example: figure hold on fplot(@sin) fplot(@cos) legend sin % Add only a le...

Why to use LSP Scenario: Suppose we have 3 databases (Mortgage Customers, Current Accounts Customers and Savings Account Customers) that provide customer data and we need customer details for given customer's last name. Now we may get more than 1 customer detail from those 3 databases against giv...

Windows Get spigot.jar using BuildTools or from here. Paste the following text into a text document. Save it as start.bat in the same directory as spigot.jar: You will need to rename your jar to spigot.jar, or modify the file in the bat file to point to the correct file. nb: Windows (by ...

#include <forward_list> #include <string> #include <iostream> template<typename T> std::ostream& operator<<(std::ostream& s, const std::forward_list<T>& v) { s.put('['); char comma[3] = {'\0', ' ', '\0'}; for (const auto& e : v...

Html.Partial returns a string on the other hand Html.RenderPartial returns void. Html.RenderPartial This method returns void and the result is directly written to the HTTP response stream. That means it uses the same TextWriter object used in the current webpage/template. For this reason, this me...

public static MvcHtmlString RadioButtonLabelFor<TModel, TProperty>(this HtmlHelper<TModel> self, Expression<Func<TModel, TProperty>> expression, bool value, string labelText) { // Retrieve the qualified model identifier string name = ExpressionHe...

Detailed instructions on getting wpf-controls set up or installed.

By default, the scope is public, the value can be accessed from anywhere. package com.example { class FooClass { val x = "foo" } } package an.other.package { class BarClass { val foo = new com.example.FooClass foo.x // <- Accessing a public value from anothe...

When the scope is private, it can only be accessed from the current class or other instances of the current class. package com.example { class FooClass { private val x = "foo" def aFoo(otherFoo: FooClass) { otherFoo.x // <- Accessing from another instance of the sam...

You can specify a package where the private value can be accessed. package com.example { class FooClass { private val x = "foo" private[example] val y = "bar" } class BarClass { val f = new FooClass f.x // <- Will not compile f.y // <- Wil...

The most restrictive scope is "object-private" scope, which only allows that value to be accessed from the same instance of the object. class FooClass { private[this] val x = "foo" def aFoo(otherFoo: FooClass) = { otherFoo.x // <- This will not compile, accessing x...

The protected scope allows the value to be accessed from any subclasses of the current class. class FooClass { protected val x = "foo" } class BarClass extends FooClass { val y = x // It is a subclass instance, will compile } class ClassB { val f = new FooClass f.x // <...

The package protected scope allows the value to be accessed only from any subclass in a specific package. package com.example { class FooClass { protected[example] val x = "foo" } class ClassB extends FooClass { val y = x // It's in the protected scope, will compile ...

The following Less: .paragraph{ font-size: 12px; color: blue; background: white; } .parent{ font-size: 14px; color: black; background: green; .nestedParagraph:extend(.paragraph){ } } will compile into the following css: .paragraph, .parent .nestedParagraph { ...