(Quiz) The Concept of Binding

A relation between an attribute and an entity

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A __________ is an association between an attribute and an entity, such as between a variable and its type or value, or between an operation and a symbol.

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Bindings between attributes and entities can take place at

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language design time

language implementation time

compile time

load time

link time

run time

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The asterisk symbol (*) is usually bound to the multiplication operation at

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language design time

language implementation time

compile time

run time

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Examples of bindings between attributes and entities

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the asterisk symbol (*) is usually bound to the multiplication operation at (1).
A data type, such as int in C, is bound to a range of possible values at (2).
A variable in a Java program is bound to a particular data type at (3).
A variable may be bound to a storage cell when the program is loaded into memory at (4). That same binding does not happen until (5) in some cases, as with variables declared in Java methods.
A call to a library subprogram is bound to the subprogram code at (6).

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language implementation time

language design time

compile time

run time

load time

link time

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Explanation

Analyze the binding times of the following Java assignment statement

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count = count + 5;

The type of count is bound at (1).
The set of possible values of count is bound at compiler (2).
The meaning of the operator symbol + is bound at (3), when the types of its operands have been determined.
The internal representation of the literal 5 is bound at compiler (4).
The value of count is bound at (5) with this statement

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compile time

design time

execution time

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A complete understanding of the binding times for the attributes of program entities is _______ for understanding the semantics of a programming language

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a prerequisite

not a prerequisite

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A binding is _________ if it first occurs before run time begins and remains unchanged throughout program execution

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static

dynamic

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If the binding first occurs during run time or can change in the course of program execution, it is called ________

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static

dynamic

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Before a variable can be referenced in a program, it must be bound to a data ________

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attribute

storage

value

type

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The two important aspects of binding a variable to its data type are

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how the type is specified

when the binding takes place

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In programs, types can be specified statically through some form of explicit or implicit declaration

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True

False

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The time at which a binding between an attribute and an entity takes place is called _ __

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A relation between an attribute and an entity

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Explanation

Bindings between attributes and entities can take place at

Correct Answer

Explanation

The asterisk symbol (*) is usually bound to the multiplication operation at

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Explanation

Examples of bindings between attributes and entities

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Explanation

Analyze the binding times of the following Java assignment statement

Correct Answer

Explanation

A complete understanding of the binding times for the attributes of program entities is _______ for understanding the semantics of a programming language

Correct Answer

Explanation

A binding is _________ if it first occurs before run time begins and remains unchanged throughout program execution

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Explanation

If the binding first occurs during run time or can change in the course of program execution, it is called ________

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Explanation

Before a variable can be referenced in a program, it must be bound to a data ________

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Explanation

The two important aspects of binding a variable to its data type are

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Explanation

In programs, types can be specified statically through some form of explicit or implicit declaration

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Explanation

The time at which a binding between an attribute and an entity takes place is called _____ ______

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The time at which a binding between an attribute and an entity takes place is called _ __