What's the Maximum Value of an Unsigned Integer in Go?

Discovering the Maximum Value of an Unsigned Integer in Go

When working with unsigned integers in Go, it's often necessary to determine their maximum representable value. This value varies depending on the bit length of the type, such as uint8, uint16, or uint64.

Initialization of minLen for Comparative Computation

In the provided loop, the minLen variable must be initialized such that it is greater than any potential value of thing.n encountered during iteration. This allows the loop to correctly find the minimum and maximum lengths from the sliceOfThings.

Maximum Value Specification

According to the documentation and forum discussions, the maximum value for an unsigned integer type can be determined using bitwise operations as follows:

const MaxUint = ^uint(0)

For example, for a uint32 type, MaxUint would be equal to 4294967295.

Initialization of minLen

Using the MaxUint constant, we can initialize minLen accordingly:

var minLen uint = ^uint(0)

This ensures that the first comparison minLen > thing.n will always evaluate to true before any iterations, allowing the loop to start with the maximum value as the initial assumption for the minimum length.

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