struct

Pf::Kit::Sparse32(T)

Inherits Struct < Value < Object

Constants

CAPS = StaticArray(UInt8, 33).new(0_u8)

Maps population count (array size) to capacity directly.

GROWTH = StaticArray(UInt8, 33).new(0_u8)

Maps item count to expected capacity. '0' means 'keep' (do not grow).

Constructors

new(mem : Pointer(T), bitmap : UInt32)
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Instance methods

at?(index : Int) : T | Nil

Returns the element at index, or nil.

index must be in 0...32, otherwise this method raises IndexError.

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bitmap

Returns the bitmap. The bitmap specifies which slots out of the 32 available ones are occupied.

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each(from lo = 0_u8, & : T, UInt8 -> )

Yields each element from this array followed by its index.

  • lo can be used to specify the lower bound (the index where to start; inclusive).
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empty?

Returns true if this array contains no elements.

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inspect(io)
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reverse_each

Yields each element from this array starting at the rightmost one and moving left.

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size

Returns the amount of elements in this array.

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to_unsafe

Returns a pointer to the internal buffer where self's elements are stored.

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with(index : Int, el : T) : Sparse32(T)

Returns a copy of this array where el is present at index.

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with!(index : Int, el : T) : self

Modifies this array at index by updating or inserting el there.

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without(index : Int) : Sparse32(T)

Returns a copy of this array where the element at index is absent.

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without!(index : Int) : self

Modifies this array by removing the element at index if it was present.

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