Arguments

Batch Script Arguments

Learn how Windows Batch scripts read command-line arguments using positional parameters, SHIFT, and path modifiers like %~dp0.

Functions in R

How R functions are defined, scoped, and evaluated — covering default arguments, lexical scoping, return values, and the ... variadic argument.

Query Arguments and Variables

Learn how GraphQL fields accept arguments to parameterize what they return, and how variables keep queries reusable, safe, and cacheable.

Default Arguments in C++

Learn how to give function parameters default fallback values in C++ and the rule that default arguments must be trailing parameters.

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.

Command Line Arguments in C

Learn how argc and argv let C programs read command-line input, with parsing and string-to-number conversion examples.

Default and Keyword Arguments in Python

How to give function parameters default values and call functions with keyword arguments, plus the notorious mutable default argument trap.

Function Arguments in Python

Understanding positional, positional-only, keyword-only, *args, and **kwargs arguments in Python function signatures.

Default and Named Arguments in Kotlin

Simplify function calls in Kotlin using default parameter values and named arguments instead of overloads.

Passing Arguments Between Screens

How to pass IDs, primitives, and complex data safely between destinations in Navigation Compose using route arguments and shared ViewModels.

Named Arguments and the Nullsafe Operator

Named arguments let callers pass function parameters by name in any order, and the nullsafe operator short-circuits chained property/method access safely when…

HCL Syntax Fundamentals

HashiCorp Configuration Language (HCL) is the declarative syntax underlying every Terraform file. Mastering its blocks, arguments, and expressions is the found…

Method Arguments and Defaults

Learn how Ruby methods accept required, optional, splat, keyword, and block arguments, and how default values keep call sites flexible and expressive.

Command-Line Arguments and getopts

Learn how Bash scripts receive positional parameters, how to shift and iterate over them, and how to build proper option parsing with getopts.

Functions in Bash

Learn how to define reusable Bash functions, pass arguments and return values, manage variable scope with local, and organize larger scripts around them.