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Transcendent Integer Negation
Languages Post #3711, on Sep 17, 2021 in TG

Transcendent Integer Negation

Why is this Languages meme funny?

Level 1: Making Simple Hard

This is like needing to turn a toy car around and first spinning it by hand, then measuring angles with a ruler, then mailing it to yourself with a note that says "face backward," and finally declaring that the car "isn't." The joke is that every row acts smarter than the last, but the job was easy from the start: just make the number negative.

Level 2: Minus The Easy Way

An integer is a whole number like 4, 0, or -12. To get its negative value, most languages let you write something like i = -i. If i is 7, it becomes -7; if it is already -7, it becomes 7.

The meme shows four ways to do that same thing, each one more ridiculous than the last:

  • i = i * -1 multiplies the number by negative one.
  • i = i - 2*i subtracts twice the number from itself, which also flips the sign.
  • The string-conversion version turns the number into text, sticks a minus sign in front, and turns it back into a number.
  • i = in't stops being real code and becomes wordplay on int.

This is why the expanding-brain images fit. They usually pretend that stranger ideas are more advanced. Here, the "advanced" versions are worse because they make a basic operation harder to read. New developers often learn this lesson after writing a clever line, coming back two weeks later, and realizing they have created homework for their future self.

The relevant Language humor is that programming languages often have many ways to express the same result. The CodeQuality lesson is that the clearest version is usually the best version unless there is a real reason to do something else. Code is read many more times than it is written, and a tiny negation should not require a math proof, a parser, and a pun dictionary.

Level 3: Galaxy Brain Negation

The expanding-brain format is doing precise work here: every row claims to be more enlightened while the code becomes less defensible. The first row shows the normal-ish arithmetic version:

i = i * -1

That is already slightly more verbose than the usual unary negation i = -i, but it is readable. The second row escalates to:

i = i - 2*i

Mathematically, that is equivalent because i - 2i = -i. It also has the flavor of code written by someone who just discovered algebra and immediately deployed it to production. The operation is still simple, but now the reader has to pause, simplify the expression mentally, and wonder whether there was a hidden reason for avoiding -i. There usually was not. There was only confidence.

The third row goes fully into type coercion theater: it visually builds a string by prefixing "-" to i.tostring, then converts it back with .toint. That is the kind of "solution" that crosses language boundaries for no reason. Instead of staying in the numeric domain, it allocates text, depends on formatting behavior, parses the result, and invites bugs around signs, locales, nulls, overflow, and whatever a particular language means by toString this week. It is the coding equivalent of mailing yourself a note to remember where your desk is.

The final row, glowing with maximum enlightenment, says:

i = in't

The joke pivots from syntax abuse to pure technical pun. int is the common name for an integer type, and in't sounds like a contraction of "isn't." So the integer becomes "isn't" itself: no longer positive, no longer negative, just semantically negated by apostrophe. This is not optimization. It is a crime scene with good typography.

What makes it especially familiar to experienced developers is the satire of cleverness as a maintenance hazard. A readable one-character operation gets replaced by progressively more "interesting" alternatives. In real codebases, that same instinct creates utility wrappers for built-in behavior, abstraction layers that hide nothing, and performance "improvements" that allocate more memory than the original problem. The meme is not saying clever code is always bad; it is saying that cleverness without purpose turns CodeReadability into archaeology.

Description

An expanding-brain meme is split into four horizontal rows, with code-like expressions on the left and progressively more illuminated brain images on the right. The rows read "i = i * -1", "i = i - 2*i", "i = ("-" + i.tostring).toint", and finally "i = in't" in very large bold text. The technical joke is about taking a simple operation, negating an integer, and escalating it through algebraic overwork, string conversion, and finally a pun on "int." It satirizes clever-looking but unreadable code that replaces a straightforward expression with novelty for its own sake.

Comments

24
Anonymous ★ Top Pick The third line allocates a string just to flip a sign, which is how you know the fourth line is the real performance optimization.
  1. Anonymous ★ Top Pick

    The third line allocates a string just to flip a sign, which is how you know the fourth line is the real performance optimization.

  2. @sylfn 4y

    x = (x ^ -1) + 1

  3. @RiedleroD 4y

    i=-i;

    1. @zherud 4y

      That's the 1st one

      1. @RiedleroD 4y

        nah not exactly

        1. @zherud 4y

          - is a prefix function that returns -1*i. So it's the same with 1 more step

  4. @Araalith 4y

    Perl: $i =~s/^/-/;

  5. @ZgGPuo8dZef58K6hxxGVj3Z2 4y

    i = (int)((uint)(i ^ 0xFFFFFFFF) & 0x80000000);

  6. @cotoha_1 4y

    just yell at it...

  7. @scout_ca11sign 4y

    i*=-1

  8. Deleted Account 4y

    j = 0 - i; i = 0 + j;

  9. @RiedleroD 4y

    i = -(2*i-(i - i*2))

  10. @sylfn 4y

    i = sqrt(-1)

    1. @RiedleroD 4y

      bug report: only works if i==NaN

      1. @sylfn 4y

        bug report: NaN != NaN

        1. @RiedleroD 4y

          bug report: that's javascript

  11. @sylfn 4y

    i = (opposite_sign(i)) * i; where int opposite_sign(int x) { return x > 0 ? -1 : 1; }

  12. @mrybs1 4y

    i=-i Easy-peasy

    1. @azizhakberdiev 4y

      i-=i--i

  13. @vimlover 4y

    i=√-1

    1. @mrybs1 3y

      Вы посмотрите на этого гения мысли

    2. Deleted Account 3y

      i² = -1

  14. @mrybs1 3y

    Pardon

  15. @BoxCollider2D 2y

    i *= -1;

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