Recursive pattern matching in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to match a tuple with two integers using recursive pattern matching.

C Sharp (C#)

bool IsPairOfInts(object obj) => obj is ([1], int);

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

Aint

Bstring

Cdouble

Dbool

Attempts:

3 left

💡 Hint

Common Mistakes

Using string or other types instead of int.

The pattern int matches any integer value in the tuple.

2fill in blank

medium

Complete the code to recursively match a nested tuple with an integer and another tuple.

C Sharp (C#)

bool IsNestedPair(object obj) => obj is (int, (int, [1]));

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

Adouble

Bstring

Cbool

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect types like string or bool.

The inner tuple's second element should be an integer, so use int.

3fill in blank

hard

Fix the error in the recursive pattern matching to correctly match a tuple with a string and a nested tuple of two integers.

C Sharp (C#)

bool MatchPattern(object obj) => obj is ([1], (int, int));

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

Aint

Bstring

Cbool

Ddouble

Attempts:

3 left

💡 Hint

Common Mistakes

Using int instead of string for the first element.

The first element is a string, so the pattern should be string.

4fill in blank

hard

Fill both blanks to match a tuple with a string and a nested tuple where the first element is an int and the second is a bool.

C Sharp (C#)

bool CheckTuple(object obj) => obj is ([1], ([2], bool));

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

Astring

Bint

Cbool

Ddouble

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the types or using incorrect types like double.

The outer tuple's first element is a string, and the nested tuple's first element is an int.

5fill in blank

hard

Fill all three blanks to match a tuple with a string, a nested tuple with an int and a nested tuple with a bool and a double.

C Sharp (C#)

bool ComplexMatch(object obj) => obj is ([1], ([2], ([3], double)));

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

Astring

Bint

Cbool

Ddouble

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of types or using wrong types like double in the wrong place.

The outer tuple's first element is a string, the middle nested tuple's first element is an int, and the innermost nested tuple's first element is a bool.