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thunk    音标拼音: [θ'ʌnk]
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thunk
n 1: a dull hollow sound; "the basketball made a thunk as it hit
the rim"

/thuhnk/ 1. "A piece of coding which provides an
address", according to P. Z. Ingerman, who invented thunks in
1961 as a way of binding {actual parameters} to their formal
definitions in {ALGOL 60} {procedure} calls. If a procedure
is called with an expression in the place of a {formal
parameter}, the compiler generates a thunk which computes the
expression and leaves the address of the result in some
standard location.

2. The term was later generalised to mean an expression,
frozen together with its {environment} (variable values), for
later evaluation if and when needed (similar to a
"{closure}"). The process of unfreezing these thunks is
called "forcing".

3. A {stubroutine}, in an {overlay} programming environment,
that loads and jumps to the correct overlay.

Compare {trampoline}.

There are a couple of onomatopoeic myths circulating about the
origin of this term. The most common is that it is the sound
made by data hitting the {stack}; another holds that the sound
is that of the data hitting an {accumulator}. Yet another
suggests that it is the sound of the expression being unfrozen
at argument-evaluation time. In fact, according to the
inventors, it was coined after they realised (in the wee hours
after hours of discussion) that the type of an argument in
{ALGOL 60} could be figured out in advance with a little
{compile-time} thought, simplifying the evaluation machinery.
In other words, it had "already been thought of"; thus it was
christened a "thunk", which is "the past tense of "think" at
two in the morning".

4. ({Microsoft Windows} programming) {universal thunk},
{generic thunk}, {flat thunk}.

[{Jargon File}]

(1997-10-11)


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  • THUNK Definition Meaning - Merriam-Webster
    The meaning of THUNK is dialectal past tense and past participle of think How to use thunk in a sentence
  • Thunk - Wikipedia
    Thunk Look up thunk in Wiktionary, the free dictionary In computer programming, a thunk is a subroutine used to inject a calculation into another subroutine Thunks are primarily used to delay a calculation until its result is needed, or to insert operations at the beginning or end of the other subroutine
  • THUNK | English meaning - Cambridge Dictionary
    THUNK definition: 1 a low sound made by something falling or hitting something else heavily: 2 to fall or hit… Learn more
  • Thunk - definition of thunk by The Free Dictionary
    Define thunk thunk synonyms, thunk pronunciation, thunk translation, English dictionary definition of thunk n A dull, hollow sound: the thunk of a metal pipe striking a tree intr v thunked , thunk·ing , thunks To make a dull, hollow sound: "Her hard shoes thunk
  • thunk - Wiktionary, the free dictionary
    thunk Representing the dull sound of the impact of a heavy object striking another and coming to an immediate standstill, with neither object being broken by the impact
  • Thunk Definition Meaning | YourDictionary
    Thunk definition: A dull, hollow sound Origin of Thunk Claimed by the inventors to be from the supposed past tense, being coined when they realised after much thought (whence "thunk") that the type of an argument in ALGOL 60 could be predetermined at compile time; not, as is sometimes claimed, from the interjection, being the supposed sound made by data hitting the stack or an accumulator
  • THUNK Definition Meaning | Dictionary. com
    THUNK definition: an abrupt, dull sound See examples of thunk used in a sentence
  • THUNK - Definition Translations | Collins English Dictionary
    Discover everything about the word "THUNK" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide





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