package res

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Module Res.DefStratSource

Default strategy for resizable datastructures

type t is a triple (waste, shrink_trig, min_size), where waste (default: 1.5) indicates how much the array should grow in excess when reallocation is triggered, shrink_trig (default: 0.5) at which percentage of excess elements it should be shrunk and min_size (default: 16 elements) is the minimum size of the resizable array.

Sourcetype t = float * float * int

The abstract type of strategies.

Sourceval default : t

Default strategy of this strategy implementation.

Sourceval grow : t -> int -> int

grow strat new_len

  • returns

    the new real length of some contiguous datastructure using strategy strat given new virtual length new_len. The user should then use this new real length to resize the datastructure.

Be careful, the new (real) length must be larger than the new virtual length, otherwise your program will crash!

Sourceval shrink : t -> real_len:int -> new_len:int -> int

shrink strat ~real_len ~new_len

  • returns

    the new real length of a resizable datastructure given its current real length real_len and its required new virtual length new_len wrt. strategy strat. The user should then use this new real length to resize the datastructure. If -1 is returned, it is not necessary to resize.

Be careful, the new (real) length must be larger than the new virtual length new_len, otherwise your program may crash!