a that is the source, or one of the sources, of a river.
a stream that is the source or a source of a river
theory A head-strict function will not necessarily evaluate every cons cell of its (list) argument, but whenever it does evaluate a cons cell it will also evaluate the element in the head of that cell. An example of a head-strict function is beforeZero :: [Int] -> [Int] beforeZero  =  beforeZero (0:xs) =  […]
[hed-strawng, -strong] /ˈhɛdˌstrɔŋ, -ˌstrɒŋ/ adjective 1. determined to have one’s own way; willful; stubborn; obstinate: a headstrong young man. 2. proceeding from or exhibiting willfulness: a headstrong course. /ˈhɛdˌstrɒŋ/ adjective 1. self-willed; obstinate 2. (of an action) heedless; rash adj. “determined to have one’s way,” late 14c., from head (n.) + strong. Cf. Old English […]
[hedz-uhp] /ˈhɛdzˌʌp/ adjective 1. quick to grasp a situation and take advantage of opportunities; alert; resourceful. noun 2. a warning in advance: sending a heads-up to the Pentagon about possible attacks. [hed] /hɛd/ noun 1. the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, […]
- Heads-up display
[hedz-uhp] /ˈhɛdzˈʌp/ noun 1. an electronic display of data from instruments or other sources projected at eye level so that a driver or pilot sees it without looking away from the road or course. Abbreviation: HUD. 2. (in a computer game) an electronic display of meters and dials around the screen margins. Abbreviation: HUD.