From http://www.nyx.net/~gthompso/quine.htm
总结的很全,各种语言都有,至少我听说的语言都提及了
摘录一些有趣的:
C的,很早就知道了,今天想起来帖出来
char*f="char*f=%c%s%c;main(){printf(f,34,f,34,10);}%c";main(){printf(f,34,f,34,10);}
可以把char*去了,只报warning
对这段代码,要么看不懂,要么会为其精妙的构思叫绝
很佩服作者
C++的,有点麻烦,但换汤不换药
Author: lapinski@utexas.edu
#include
main(){char*s="#include%cmain(){char*s=%c%s%c;cout.form(s,10,34,s,34,10);}%c";cout.form(s,10,34,s,34,10);}
Javascript的，有投机取巧的感觉
Author: Geoffrey A. Swift(blimey@toke.com)
function a() {
document.write(a, "a()");
}
a()
In perspective drawing, a vanishing point represents a group of parallel lines, in other words, a direction. For any point on the paper, if we want a line towards the same direction (in the 3d space), we simply draw a line through it and the vanishing point. But sometimes the vanishing point is too far away, such that it is outside the paper/canvas. In this example, we have a point P and two perspective lines L1 and L2. The vanishing point VP is naturally the intersection of L1 and L2. The task is to draw a line through P and VP, without having VP on the paper. I am aware of a few traditional solutions: 1. Use extra pieces of paper such that we can extend L1 and L2 until we see VP. 2. Draw everything in a smaller scale, such that we can see both P and VP on the paper. Draw the line and scale everything back. 3. Draw a perspective grid using the Brewer Method. #1 and #2 might be quite practical. #3 may not guarantee a solution, unless we can measure distances/p...
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