Parameters

Command Parameters

How CommandParameter passes contextual data from a View control into a ViewModel's Execute and CanExecute logic, and the patterns and pitfalls around its use.

Navigation in MVVM

How MVVM apps navigate between screens through an INavigationService abstraction, pass parameters and receive results, and support deep linking without ViewMod…

Cascading Parameters

Understand how CascadingValue and [CascadingParameter] let ancestor components implicitly supply data to deeply nested descendants without prop drilling.

Component Parameters

Learn how Blazor components accept and expose data from their parents using the [Parameter] attribute, including required parameters, complex types, and one-wa…

Functions and Parameters

Learn to write reusable PowerShell functions with typed, validated, pipeline-aware parameters, and understand how advanced functions behave like native cmdlets.

PowerShell Syntax and Cmdlets

Master the Verb-Noun cmdlet naming convention, parameters, aliases, and the pipeline that make PowerShell commands predictable and discoverable.

Stored Procedures

Understand how to create, parameterize, and execute stored procedures to encapsulate reusable, precompiled T-SQL logic on the server.

Parameters and Scope

Understand Pascal's value vs var parameters and how block-structured scoping controls variable visibility.

Optional and ByRef Parameters

Learn how VB.NET's Optional, ByRef, and ParamArray parameters give procedures flexible, efficient, and expressive argument-passing options.

Functions in D

Understand D function declarations, parameter storage classes (in/ref/out/lazy), overloading, and Design by Contract.

Optional and Named Parameters

Learn Dart's positional-optional and named parameter syntax, how defaults and the required keyword work, and the rules governing how they combine.

Implicits in Scala

Scala's implicit parameters, implicit conversions, and implicit classes let the compiler thread context and behavior through code automatically, powering type…

Function Parameters and Arguments in C++

Learn the difference between function parameters and arguments in C++ and understand pass-by-value semantics with a hands-on example.

Default and Rest Parameters in JavaScript

Use default parameter values and gather variable numbers of arguments with rest parameters.

Optional and Default Parameters in TypeScript

Make function parameters optional or give them default values, and understand how TypeScript infers their types.

Rest Parameters in TypeScript

Collect an arbitrary number of trailing arguments into a typed array parameter.

Parameters and Return Values in Swift

Master default values, variadic parameters, in-out parameters, and multiple return values via tuples in Swift functions.

Route Parameters and Query Strings

Understand how to capture dynamic URL segments and optional query data in Express routes.

Pivot Tables

How pandas' pivot_table reshapes long-format data into a summarized cross-tabulation, aggregating values across row and column groupings similar to a spreadshe…

Route Parameters and Query Params

Understand how to pass dynamic data through the URL using required route parameters and optional query parameters, and how to read them reactively in a compone…