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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
Profiler
pack "(stuff)*"
Contiguous bitfields in pack/unpack
lexperl
Bundled perl preprocessor
Use posix calls internally where possible
const variables
gettimeofday
bytecompiler
format BOTTOM
$obj->can("method") to probe method inheritance
-iprefix.
-i rename file only when successfully changed
All ARGV input should act like <>
Multiple levels of warning
report HANDLE [formats].
tie(FILEHANDLE, ...)
__DATA__
support in perlmain to rerun debugger
make 'r' print return value like gdb 'fini'
regression tests using __WARN__ and __DIE__ hooks
Possible pragmas
debugger
optimize (use less memory, CPU)
Optimizations
constant function cache
switch structures
foreach(@array)
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
sfio?
"one pass" global destruction
Optimize sort by { $a <=> $b }
Rewrite regexp parser for better integrated optimization
Vague possibilities
ref function in list context
Populate %SIG at startup if appropriate
sub mysplice(@, $, $, ...)
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
perl to C translator
multi-thread scheduling
built-in globbing
compile to real threaded code
structured types
paren counting in tokener to queue remote expectations
autocroak?
Modifiable $1 et al
substr EXPR,OFFSET,LENGTH,STRING
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