listless

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Related to listlessly: languorous, insurmountable, exhilarating

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).
References in classic literature ?
So I hasten to add that the mood was one of brief duration, and that no cold-water arguments were able to quench the fire which those eyes had set aflame within me, no daylight philosophy had any power to dispel the dream of a face which was now my most precious possession, as I once more took up my stick and listlessly pursued my way to Yellowsands.
It's no use," he thought, and threw himself at full length on the turf, and looked vaguely and listlessly at all the well-known objects.
Some lean lazily against the side-posts, humming to themselves or calling to the passer-by in a raucous voice, and some listlessly read.
His frail white fingers were listlessly toying with something which looked, to my uninstructed eyes, like a dirty pewter medal with ragged edges, when I advanced within a respectful distance of his chair, and stopped to make my bow.
The sun went down and the stars peeped out, the Tower turned from its own proper colours to grey and from grey to black, the room became perfectly dark and the end of the cigar a deep fiery red, but still Mr Quilp went on smoking and drinking in the same position, and staring listlessly out of window with the doglike smile always on his face, save when Mrs Quilp made some involuntary movement of restlessness or fatigue; and then it expanded into a grin of delight.
I propped my book open and stared listlessly at the page of the `Georgics' where tomorrow's lesson began.
He went listlessly, with bent head and stooped shoulders, like an old man who bore upon his back the weight of a great sorrow.
Such were the ideas of the unfortunate prince while sitting listlessly upon his horse, to which he abandoned the reins; he rode slowly along beneath the warm May sun, in which the somber misanthropy of the exile perceived a last insult to his grief.
Tess listlessly lent a hand, and in a quarter of an hour the old four-post bedstead was dissociated from the heap of goods, and erected under the south wall of the church, the part of the building know as the d'Urberville Aisle, beneath which the huge vaults lay.
Philip stood at the table and pretended to turn listlessly the pages of the Bible.
as, with a portentous yawn, she laid down her worsted-work and looked listlessly towards the window.
Harrison stood listlessly at the wheel, half supporting himself by it, as though wearied by the weight of his flesh.