UintArrayUtils

Overview

library UintArrayUtils

function indexOf(
    uint256[] memory A,
    uint256 a
) internal pure returns (uint256, bool)

Finds the index of the first occurrence of the given element.

Parameters:

Name	Type	Description
A	uint256[]	The input array to search
a	uint256	The value to find

Return values:

Name	Type	Description
[0]	uint256	Returns (index and isIn) for the first occurrence starting from index 0

function contains(uint256[] memory A, uint256 a) internal pure returns (bool)

Returns true if the value is present in the list. Uses indexOf internally.

Parameters:

Name	Type	Description
A	uint256[]	The input array to search
a	uint256	The value to find

Return values:

Name	Type	Description
[0]	bool	Returns isIn for the first occurrence starting from index 0

function difference(
    uint256[] memory A,
    uint256[] memory B
) internal pure returns (uint256[] memory)

Computes the difference of two arrays. Assumes there are no duplicates.

Parameters:

Name	Type	Description
A	uint256[]	The first array
B	uint256[]	The second array

Return values:

Name	Type	Description
[0]	uint256[]	A - B; an array of values in A not found in B.

function intersect(
    uint256[] memory A,
    uint256[] memory B
) internal pure returns (uint256[] memory)

Returns the intersection of two arrays. Arrays are treated as collections, so duplicates are kept.

Parameters:

Name	Type	Description
A	uint256[]	The first array
B	uint256[]	The second array

Return values:

Name	Type	Description
[0]	uint256[]	The intersection of the two arrays

function extend(
    uint256[] memory A,
    uint256[] memory B
) internal pure returns (uint256[] memory)

Returns the combination of two arrays

Parameters:

Name	Type	Description
A	uint256[]	The first array
B	uint256[]	The second array

Return values:

Name	Type	Description
[0]	uint256[]	Returns A extended by B