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Chapter 6: Problem 26

The value of a default argument must be a(n) _________.

Short Answer

Expert verified
Question: The value of a default argument must be a(n) ______ object. Answer: immutable

Step by step solution

01

Understanding Default Arguments

A default argument is a value provided for a function parameter when the function is defined, and it is used if the caller does not provide a value for that parameter when calling the function. It is helpful because it allows developers to set predefined values for parameters and enables function calls with fewer arguments.
02

Identifying the Correct Term

A default argument's value must be an *immutable* object. Immutable objects include numbers, strings and tuples. This is because if the default value was mutable, like a list or dictionary, it could change during the course of function calls, leading to unexpected behavior.
03

Filling in the Blank

The correct term for the value of a default argument is an **immutable** object. The completed sentence is: The value of a default argument must be a(n) **immutable** object.

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Most popular questions from this chapter

\(\mathrm{T} \quad \mathrm{F} \quad\) A stub is a dummy function that is called instead of the actual function it represents.

When only a copy of an argument is passed to a function, it is said to be passed by _________.

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T \(\quad F \quad\) If other functions are defined before main, the program still starts executing at function main.
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