an implementation of fractional index for lexicon.

fractional-index

Author

tiye

Version

0.0.4

License

Apache-2.0

Repository

github.com/Cumulo/lexicon-fractional-index.mbt

Last updated

8 months ago

Downloads

#lexicon-fractional-index

an implementation of fractional index for lexicon.

moon add tiye/lexicon-fractional-index

{
  "path": "tiye/lexicon-fractional-index",
  "alias": "lexicon"
}

key_between(a, b) // generated key between a and b
n_key_between(a, b, n) // n generated keys between a and b

#License

Apache 2.0

KeyError

source

pub suberror KeyError String

common error structure of lexicon order key

impl Show for KeyError

float64_approx

source

fn float64_approx(key : String) -> Double raise KeyError

float64_approx converts a key as generated by key_between() to a float64. Because the range of keys is far larger than float64 can represent accurately, this is necessarily approximate. But for many use cases it should be, as they say, close enough for jazz.

key_between

source

fn key_between(a : String?, b : String?) -> String raise KeyError

key_between returns a key that sorts lexicographically between a and b. Either a or b can be empty strings. If a is empty it indicates smallest key, If b is empty it indicates largest key. b must be empty string or > a.

n_keys_between

source

fn n_keys_between(a : String?, b : String?, n : Int) -> Array[String] raise KeyError

n_keys_between returns n keys between a and b that sorts lexicographically. Either a or b can be empty strings. If a is empty it indicates smallest key, If b is empty it indicates largest key. b must be empty string or > a.

pow

source

fn pow(x : Int, exp : Int) -> Int

powf

source

fn powf(x : Double, exp : Int) -> Double

Source Files

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lexicon-fractional-index

#lexicon-fractional-index

#License

#KeyError

#float64_approx

#key_between

#n_keys_between

#pow

#powf

Source Files

KeyError

float64_approx

key_between

n_keys_between

pow

powf