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Meaning of LISTLESS

Pronunciation:  'listlis

WordNet Dictionary
 
 Definition: 
  1. [adj]  lacking zest or vivacity; "he was listless and bored"
  2. [adj]  marked by low spirits; showing no enthusiasm; "a dispirited and divided Party"; "reacted to the crisis with listless resignation"
 
 Websites: 
 
 Synonyms: dispirited, lethargic, spiritless, unergetic
 

 

 

Webster's 1913 Dictionary
 
 Definition: 
\List"less\, a. [OE. listles, lustles. See {Lust}.]
Having no desire or inclination; indifferent; heedless;
spiritless. `` A listless unconcern.'' --Thomson.
      Benumbed with cold, and listless of their gain.
                                               --Dryden.
      I was listless, and desponding.          --Swift.
Syn: Heedless; careless; indifferent; vacant; uninterested;
     languid; spiritless; supine; indolent. --
     {List"less*ly}, adv. -- {List"less*ness}, n.
 
Computing Dictionary
 
 Definition: 

In functional programming, a property of a function which allows it to be combined with other functions in a way that eliminates intermediate data structures, especially lists.

Phil Wadler's thesis gives the conditions for a function to be in listless form: each input list is traversed only once, one element at a time, from left to right. Each output list is generated once, one element at a time, from left to right. No other lists are generated or traversed.

Not all functions can be expressed in listless form (e.g. reverse).

 
Thesaurus Terms
 
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