snap
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Related to snap: Snapchat
snap
1. Informal See snapshot
2. Brit a card game in which the word snap is called when two cards of equal value are turned up on the separate piles dealt by each player
3. American football the start of each play when the centre passes the ball back from the line of scrimmage to a teammate
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
snap
[snap] (meteorology)
A brief period of extreme (generally cold) weather setting in suddenly, as in a “cold snap.”
SNAP
[snap] (nucleonics)
A small nuclear power plant in which heat from radioisotope decay in a fuel such as strontium-90 is converted into electric energy, to provide power for spacecraft instrumentation, telemetry, and other applications. Derived from systems for nuclear auxiliary power.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
rivet set, rivet snap, setting punch, snap
rivet set
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
SNAP
(language)1. An early (IBM 360?) interpreted
text-processing language for beginners, close to basic
English.
["Computer Programming in English", M.P. Barnett, Harcourt Brace 1969].
2. ["Some Proposals for SNAP, A Language with Formal Macro Facilities", R.B. Napper, Computer J 10(3):231-243, 1967].
["Computer Programming in English", M.P. Barnett, Harcourt Brace 1969].
2. ["Some Proposals for SNAP, A Language with Formal Macro Facilities", R.B. Napper, Computer J 10(3):231-243, 1967].
snap
(2)1. <programming> To remove indirection, e.g. by replacing a
pointer to a pointer with a pointer to the final target (see
chase pointers).
The underlying metaphor may be a rubber band stretched through a number of points; if you release it from the intermediate points, it snaps to a straight line from first to last.
Often a trampoline performs an error check once and then snaps the pointer that invoked it so subsequent calls will bypass the trampoline (and its one-shot error check). In this context one also speaks of "snapping links". For example, in a Lisp implementation, a function interface trampoline might check to make sure that the caller is passing the correct number of arguments; if it is, and if the caller and the callee are both compiled, then snapping the link allows that particular path to use a direct procedure-call instruction with no further overhead.
The underlying metaphor may be a rubber band stretched through a number of points; if you release it from the intermediate points, it snaps to a straight line from first to last.
Often a trampoline performs an error check once and then snaps the pointer that invoked it so subsequent calls will bypass the trampoline (and its one-shot error check). In this context one also speaks of "snapping links". For example, in a Lisp implementation, a function interface trampoline might check to make sure that the caller is passing the correct number of arguments; if it is, and if the caller and the callee are both compiled, then snapping the link allows that particular path to use a direct procedure-call instruction with no further overhead.
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