X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=Todo;h=5e48ba62448f9dc1b96edaa7e45ba6d0d73c3a48;hb=ba51d756f9ffaa3939ada6861397f27ce3967220;hp=86e2b17d5fbc854298ac522e935ddc4d07b56388;hpb=79072805bf63abe5b5978b5928ab00d360ea3e7f;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/Todo b/Todo
old mode 100755
new mode 100644
index 86e2b17..5e48ba6
--- a/Todo
+++ b/Todo
@@ -1,18 +1,59 @@
-Set KEEP on constant split
-Optimize foreach on array.
-Execute all BEGINs and ENDs.
-Make a good way to determine if *.pl is being executed directly.
-Make specialized allocators.
-Optimize switches.
-Do debugger
-Cache eval tree
-Implement eval once
-Cache m//g state
-rcatmaybe
-Fix length($&)
-eval {} coredump
+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
+
+Would be nice to have
+	pack "(stuff)*"
+	Contiguous bitfields in pack/unpack
+	lexperl
+	Bundled perl preprocessor
+	Use posix calls internally where possible
+	gettimeofday
+	format BOTTOM
+	-iprefix.
+	-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
+
+Possible pragmas
+	debugger
+	optimize (use less memory, CPU)
+
+Optimizations
+	constant function cache
+	switch structures
+	eval qw() at compile time
+	foreach (1..1000000)
+	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
+	Optimize sort by { $a <=> $b }
+	Rewrite regexp parser for better integrated optimization
+	LRU cache of regexp: foreach $pat (@pats) { foo() if /$pat/ }
+
+Vague possibilities
+	ref function in list context
+	data prettyprint function?  (or is it, as I suspect, a lib routine?)
+	make tr/// return histogram in list context?
+	undef wantarray in void 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
+	substr EXPR,OFFSET,LENGTH,STRING
 
-make tr/// return histogram in list context?
-Do anything with "hint"?
-When does split() go to @_?
-undef wantarray in void context?