Function argument
A function argument is a value or expression supplied when a function or method is invoked, providing input to the called operation.
A Pythonic Adventure: From Python basics to a working web app
A function argument is a value supplied to a function call for the function to operate on.
- How it is used
- Uses arguments to give print(), input(), and reusable menu functions the information they need.
- How deep it goes
- Explains passing strings, numbers, and variables through calls, then works through a three-argument menu function with defaults.
- Examples
- Demonstrates print and input prompts, then a coffee-shop menu selecting drinks, flavors, and toppings.
- What you can do after
- Build it from scratch by writing and calling a menu function that accepts choices, titles, and prompts.
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The Well-Grounded Rubyist, Fourth Edition
A Ruby argument is a value supplied to a method call and is distinct from a supplied block.
- How it is used
- Uses arguments to supply objects to Ruby method calls, including conversions, array operations, and proc calls.
- How deep it goes
- Defines arguments against formal parameters, works through required and optional counts, and explains object references; leaves lambda argument rules undeveloped.
- Examples
- Illustrates arguments with Celsius conversion, wrong-count errors, rest arrays, default values, string mutation, and proc calls.
- What you can do after
- Build it from scratch by defining method parameters, supplying matching arguments, and choosing rest or default parameters when calls vary.
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Python Workout, Second Edition
A function argument is a value supplied to a function call for use by the corresponding parameter.
- How it is used
- Uses arguments to pass fixed, optional, variable-length, or named values into Python functions.
- How deep it goes
- Explains defaults, tuple collection, iterable unpacking, and dictionary-based keyword processing, stopping short of deeper call mechanics.
- Examples
- Uses a variable-argument summation function and an XML-tag function with optional content and keyword-generated attributes.
- What you can do after
- Apply it via Python function calls that pass optional values, unpack iterables, or supply arbitrary keyword pairs.
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Statistics Slam Dunk
A function argument is an input value supplied to a function when it is invoked.
- How it is used
- Uses supplied input values to control what a function does when it runs.
- How deep it goes
- Defines arguments, distinguishes them from function bodies and return values, and demonstrates a missing-argument error.
- Examples
- Uses pivot_wider(), r_to_rsquared(), and gini.est() calls to show supplied inputs, outputs, and missing arguments.
- What you can do after
- Apply R functions by supplying required inputs and interpreting their returned values.
The Well-Grounded Python Developer: How the pros use Python and Flask
An argument is a value supplied to a function or method when it is called.
- How it is used
- Uses arguments to pass information from calling code into functions and methods through an API contract.
- How deep it goes
- Defines arguments and parameters, then demonstrates positional, keyword, variadic, and default arguments through print.
- Examples
- Uses print calls with one or multiple strings and examines the print signature’s sep, end, file, and flush parameters.
- What you can do after
- Apply it via Python function calls to pass values positionally or by keyword and customize print output.
Related concepts
- function parametercontrasts with · A function parameter is a named input declared in a function definition that receives a corresponding argument value when the function is called.
- inputcontrasts with · An input is a value, information, or signal supplied to a system, computation, or interface for processing or to influence its behavior.
- functionused by · A function is a callable program unit that performs an operation, may accept inputs, and can produce a result or side effect.
- rest operatorused by · In JavaScript, rest syntax uses three dots to collect remaining function arguments, array elements, or object properties into a single binding.
- callused by · A function call is an operation or expression that invokes a function or other callable, optionally supplies arguments, and initiates its execution.
- higher-order functionused by · A higher-order function is a function that accepts functions as arguments, returns functions as results, or both.
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