The Hacker's Dictionary, - [best reads of all time .txt] 📗
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world, there is a folk theorem (nearly true) to the effect that (owing to gross inadequacies and performance penalties in the OS
interface) all interesting applications are ill-behaved. See also {bare metal}. Oppose {well-behaved}, compare {PC-ism}. See {mess-dos}.
:IMHO: // [from SF fandom via USENET; abbreviation for `In My Humble Opinion'] "IMHO, mixed-case C names should be avoided, as mistyping something in the wrong case can cause hard-to-detect errors --- and they look too Pascalish anyhow." Also seen in variant forms such as IMNSHO (In My Not-So-Humble Opinion) and IMAO
(In My Arrogant Opinion).
:Imminent Death Of The Net Predicted!: [USENET] prov. Since USENET
first got off the ground in 1980-81, it has grown exponentially, approximately doubling in size every year. On the other hand, most people feel the {signal-to-noise ratio} of USENET has dropped steadily. These trends led, as far back as mid-1983, to predictions of the imminent collapse (or death) of the net. Ten years and numerous doublings later, enough of these gloomy prognostications have been confounded that the phrase "Imminent Death Of The Net Predicted!" has become a running joke, hauled out any time someone grumbles about the {S/N ratio} or the huge and steadily increasing volume.
:in the extreme: adj. A preferred superlative suffix for many hackish terms. See, for example, `obscure in the extreme' under {obscure}, and compare {highly}.
:incantation: n. Any particularly arbitrary or obscure command that one must mutter at a system to attain a desired result. Not used of passwords or other explicit security features. Especially used of tricks that are so poorly documented they must be learned from a {wizard}. "This compiler normally locates initialized data in the data segment, but if you {mutter} the right incantation they will be forced into text space."
:include: vt. [USENET] 1. To duplicate a portion (or whole) of another's message (typically with attribution to the source) in a reply or followup, for clarifying the context of one's response.
See the the discussion of inclusion styles under "Hacker Writing Style". 2. [from {C}] `#include '
has appeared in {sig block}s to refer to a notional `standard {disclaimer} file'.
:include war: n. Excessive multi-leveled including within a discussion {thread}, a practice that tends to annoy readers. In a forum with high-traffic newsgroups, such as USENET, this can lead to {flame}s and the urge to start a {kill file}.
:indent style: [C programmers] n. The rules one uses to indent code in a readable fashion; a subject of {holy wars}. There are four major C indent styles, described below; all have the aim of making it easier for the reader to visually track the scope of control constructs. The significant variable is the placement of {' and}' with respect to the statement(s) they enclose and the guard or controlling statement (if',else', for',while', or `do') on the block, if any.
K&R style' --- Named after Kernighan & Ritchie, because the examples in {K&R} are formatted this way. Also calledkernel style' because the UNIX kernel is written in it, and the `One True Brace Style' (abbrev. 1TBS) by its partisans. The basic indent shown here is eight spaces (or one tab) per level; four are occasionally seen, but are much less common.
if (cond) { <body> }Allman style' --- Named for Eric Allman, a Berkeley hacker who wrote a lot of the BSD utilities in it (it is sometimes calledBSD style'). Resembles normal indent style in Pascal and Algol.
Basic indent per level shown here is eight spaces, but four is just as common (esp. in C++ code).
if (cond) { <body> }`Whitesmiths style' --- popularized by the examples that came with Whitesmiths C, an early commercial C compiler. Basic indent per level shown here is eight spaces, but four is occasionally seen.
if (cond) { <body> }GNU style' --- Used throughout GNU EMACS and the Free Software Foundation code, and just about nowhere else. Indents are always four spaces per level, with{' and `}' halfway between the outer and inner indent levels.
if (cond) { <body> }Surveys have shown the Allman and Whitesmiths styles to be the most common, with about equal mind shares. K&R/1TBS used to be nearly universal, but is now much less common (the opening brace tends to get lost against the right paren of the guard part in an `if'
or `while', which is a {Bad Thing}). Defenders of 1TBS
argue that any putative gain in readability is less important than their style's relative economy with vertical space, which enables one to see more code on one's screen at once. Doubtless these issues will continue to be the subject of {holy wars}.
:index: n. See {coefficient of X}.
:infant mortality: n. It is common lore among hackers (and in the electronics industry at large; this term is possibly techspeak by now) that the chances of sudden hardware failure drop off exponentially with a machine's time since power-up (that is, until the relatively distant time at which enough mechanical wear in I/O
devices and thermal-cycling stress in components has accumulated for the machine to start going senile). Up to half of all chip and wire failures happen within a new system's first few weeks; such failures are often referred to as infant mortality' problems (or, occasionally, assudden infant death syndrome'). See {bathtub curve}, {burn-in period}.
:infinite: adj. Consisting of a large number of objects; extreme.
Used very loosely as in: "This program produces infinite garbage." "He is an infinite loser." The word most likely to follow infinite', though, is {hair} (it has been pointed out that fractals are an excellent example of infinite hair). These uses are abuses of the word's mathematical meaning. The termsemi-infinite', denoting an immoderately large amount of some resource, is also heard. "This compiler is taking a semi-infinite amount of time to optimize my program." See also {semi}.
:infinite loop: n. One that never terminates (that is, the machine {spin}s or {buzz}es forever and goes {catatonic}). There is a standard joke that has been made about each generation's exemplar of the ultra-fast machine: "The Cray-3 is so fast it can execute an infinite loop in under 2 seconds!"
:infinity: n. 1. The largest value that can be represented in a particular type of variable (register, memory location, data type, whatever). 2. `minus infinity': The smallest such value, not necessarily or even usually the simple negation of plus infinity.
In N-bit twos-complement arithmetic, infinity is 2^(N-1) - 1 but minus infinity is - (2^(N-1)), not -(2^(N-1) - 1). Note also that this is different from "time T equals minus infinity", which is closer to a mathematician's usage of infinity.
:initgame: /in-it'gaym/ [IRC] n. An {IRC} version of the venerable trivia game "20 questions", in which one user changes his {nick} to the initials of a famous person or other named entity, and the others on the channel ask yes or no questions, with the one to guess the person getting to be "it" next. As a courtesy, the one picking the initials starts by providing a 4-letter hint of the form sex, nationality, life-status, reality-status. For example, MAAR means "Male, American, Alive, Real" (as opposed to "fictional"). Initgame can be surprisingly addictive. See also {hing}.
:insanely great: adj. [Mac community, from Steve Jobs; also BSD UNIX
people via Bill Joy] Something so incredibly {elegant} that it is imaginable only to someone possessing the most puissant of {hacker}-natures.
:INTERCAL: /in't*r-kal/ [said by the authors to stand for `Compiler Language With No Pronounceable Acronym'] n. A computer language designed by Don Woods and James Lyon in 1972.
INTERCAL is purposely different from all other computer languages in all ways but one; it is purely a written language, being totally unspeakable. An excerpt from the INTERCAL Reference Manual will make the style of the language clear: It is a well-known and oft-demonstrated fact that a person whose work is incomprehensible is held in high esteem. For example, if one were to state that the simplest way to store a value of 65536
in a 32-bit INTERCAL variable is: DO :1 <- #0$#256 any sensible programmer would say that that was absurd. Since this is indeed the simplest method, the programmer would be made to look foolish in front of his boss, who would of course have happened to turn up, as bosses are wont to do. The effect would be no less devastating for the programmer having been correct.INTERCAL has many other peculiar features designed to make it even more unspeakable. The Woods-Lyons implementation was actually used by many (well, at least several) people at Princeton. The language has been recently reimplemented as C-INTERCAL and is consequently enjoying an unprecedented level of unpopularity; there is even an alt.lang.intercal newsgroup devoted to the study and ...
appreciation of the language on USENET.
:interesting: adj. In hacker parlance, this word has strong connotations of annoying', ordifficult', or both. Hackers relish a challenge, and enjoy wringing all the irony possible out of the ancient Chinese curse "May you live in interesting times".
Oppose
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