With expressions for immutable copies in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a copy of the record with a new Age.

C Sharp (C#)

var person2 = person [1] { Age = 30 };

Drag options to blanks, or click blank then click option'

Anew

Bcopy

Cclone

Dwith

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'new' instead of 'with' to copy a record.

Trying to use 'copy' or 'clone' which are not valid keywords here.

The 'with' expression creates a copy of the record with specified property changes.

2fill in blank

medium

Complete the code to define a record Person with properties Name and Age.

C Sharp (C#)

public record Person(string [1], int Age);

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AName

Bname

CFullName

DAge

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'name' which is not consistent with C# naming conventions.

Using 'FullName' which is not defined in the record.

The property name should be 'Name' to match the usage in the code.

3fill in blank

hard

Fix the error in the code to create a new record with a changed Age.

C Sharp (C#)

var person2 = person [1] { Age = 35 };

Drag options to blanks, or click blank then click option'

Acopy

Bwith

Cclone

Dnew

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'copy' or 'clone' which are not valid C# keywords.

Using 'new' which creates a new instance but does not copy existing values.

The 'with' keyword is required to create a copy with modified properties in records.

4fill in blank

hard

Fill both blanks to create a copy of the record with a new Name and Age.

C Sharp (C#)

var person3 = person [1] { Name = [2], Age = 40 };

Drag options to blanks, or click blank then click option'

Awith

B"John"

C"Alice"

Dnew

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'new' instead of 'with' for copying.

Not using quotes around the string value for Name.

Use 'with' to copy the record and assign the new Name as "John".

5fill in blank

hard

Fill all three blanks to create a copy with uppercase Name and incremented Age.

C Sharp (C#)

var person4 = person [1] { Name = person.Name.[2](), Age = person.Age [3] 1 };

Drag options to blanks, or click blank then click option'

Awith

BToUpper

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'new' instead of 'with' for copying.

Using 'ToLower' instead of 'ToUpper' for the Name.

Using '-' instead of '+' to increment Age.

Use 'with' to copy, 'ToUpper()' to uppercase the Name, and '+' to add 1 to Age.