docs/internal/notes-and-links.txt

   1 Programming languages were at one point a flourishing research area.  In some areanas, they still are.
   2 It is difficult to get a programming language "right."  Parenscript is fortunate in that it is
   3 modelled after a language to which many people have contributed a great deal over many decades.
   4
   5 Most of the links and notes below refer to ideas about Common Lisp.  Some are about Javascript,
   6 the target programming language and environment for Parenscript.
   7
   8
   9 Strange Javascript Semantics
  10 ===========================================================================
  11 var x = 1;
  12 function foo() {
  13  if (x == ONE_OR_NOT_ONE) { var x = 3; }
  14  return "bleck: " + x;
  15 };
  16 foo();
  17
  18 This code returns "bleck: undefined" when ONE_OR_NOT_ONE is 1 or 2.  See
  19 http://www.ecma-international.org/publications/files/ecma-st/ECMA-262.pdf
  20 page 37 for an explanation of the semantics of variable scope.
  21
  22
  23 var x = 1; function foo(a) { return foo; var foo=5; } foo(3);
  24
  25 => 'undefined'
  26
  27 var x = 1; function foo(a) { return foo; } foo(3);
  28
  29 => thee function foo
  30
  31
  32
  33
  34 Reference material
  35 ===========================================================================
  36 Macro Expansion in Lisp:
  37    Common Lisp the Language, 2nd Edition.
  38    http://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node99.html
  39
  40 File Compilation:
  41    http://www.lispworks.com/documentation/HyperSpec/Body/03_bca.htm
  42
  43 Special forms in Lisp:
  44    CLHS
  45    http://www.lisp.org/HyperSpec/Body/sec_3-1-2-1-2-1.html
  46
  47 block      let*                  return-from
  48 catch      load-time-value       setq
  49 eval-when  locally               symbol-macrolet
  50 flet       macrolet              tagbody
  51 function   multiple-value-call   the
  52 go         multiple-value-prog1  throw
  53 if         progn                 unwind-protect
  54 labels     progv
  55 let        quote