listless

Adjective
Synonyms: dispirited

WordNet 3.0

Adjective (2)

  1. lacking zest or vivacity“he was listless and bored”
  2. marked by low spirits; showing no enthusiasm“a dispirited and divided Party”“reacted to the crisis with listless resignation”Synonyms: dispirited
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Webster's Dictionary (GCIDE)

Listless \List"less\, a. [OE. listles, lustles. See Lust.] Having no desire or inclination; indifferent; heedless; spiritless. " A listless unconcern." --Thomson. [1913 Webster]

Benumbed with cold, and listless of their gain. --Dryden. [1913 Webster]

I was listless, and desponding. --Swift.

Syn: Heedless; careless; indifferent; vacant; uninterested; languid; spiritless; supine; indolent. -- List"less*ly, adv. -- List"less*ness, n. [1913 Webster]

Free On-line Dictionary of Computing

listless

<programming> 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).

(1995-02-22)

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