applied non-conflicting parts of suggested patch

[perl5.git] / Todo

diff --git a/Todo b/Todo
old mode 100755 (executable)
new mode 100644 (file)
index 3393a7f..ca5cbaf
--- a/Todo
+++ b/Todo
@@ -1,31 +1,56 @@
-POSIX compatibility
-hash binding
-pack(P)
-fix gv refcnts
+Tie Modules
+       VecArray                Implement array using vec()
+       SubstrArray             Implement array using substr()
+       VirtualArray            Implement array using a file
+       ShiftSplice             Defines shift et al in terms of splice method
 
-/\Afoo/ (beginning of string, or where previous g match left off)
-/foo\Z/ (end of string only)
-Make specialized allocators
-Optimize switch statements
-Optimize foreach on array
-Optimize foreach (1..1000000)
-Set KEEP on constant split
-Cache eval tree (unless lexical outer scope used (mark in &compiling?))
-rcatmaybe
-Cache method lookup
-Shrink opcode tables via multiple implementations selected in peep
-Straighten out the RS stuff in BEGIN
-Make yyparse recursion longjmp() proof.
+Would be nice to have
+       pack "(stuff)*"
+       Contiguous bitfields in pack/unpack
+       lexperl
+       Bundled perl preprocessor
+       Use posix calls internally where possible
+       gettimeofday (possibly best left for a module?)
+       format BOTTOM
+       -i rename file only when successfully changed
+       All ARGV input should act like <>
+       report HANDLE [formats].
+       support in perlmain to rerun debugger
+       regression tests using __DIE__ hook
+       reference to compiled regexp
+       lexically scoped functions: my sub foo { ... }
+       lvalue functions
+       regression/sanity tests for suidperl
+       Full 64 bit support (i.e. "long long")
+       Generalise Errno way of extracting cpp symbols and use that in
+           Errno and Fcntl (ExtUtils::CppSymbol?)
+
+Possible pragmas
+       debugger
+       optimize (use less memory, CPU)
+
+Optimizations
+       constant function cache
+       switch structures
+       foreach(reverse...)
+       Set KEEP on constant split
+       Cache eval tree (unless lexical outer scope used (mark in &compiling?))
+       rcatmaybe
+       Shrink opcode tables via multiple implementations selected in peep
+       Cache hash value?  (Not a win, according to Guido)
+       Optimize away @_ where possible
+       "one pass" global destruction
+       Rewrite regexp parser for better integrated optimization
+       LRU cache of regexp: foreach $pat (@pats) { foo() if /$pat/ }
+
+Vague possibilities
+       ref function in list context
+       make tr/// return histogram in list context?
+       Loop control on do{} et al
+       Explicit switch statements
+       built-in globbing
+       compile to real threaded code
+       structured types
+       autocroak?
+       Modifiable $1 et al
 
-sub mysplice(@, $, $, ...)?
-pretty function?  (or is it, as I suspect, a lib routine?)
-perlex function?
-X Perl?  Motif Perl?
-give DOG $bone?
-Nested destructors?
-make tr/// return histogram in list context?
-Implement eval once?  (Unnecessary with cache?)
-When does split() go to @_?
-undef wantarray in void context?
-goto &coroutine?
-filehandle references?