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How complete is Hat?

Key:
- = no support
+ = partial support
* = full support

Haskell'98
vs. Hat
Actual (2.00)Planned

Language constructs
modules**
lambda abstractions**
pattern matches**
guards**
if-then-else**
case expr of**
list comprehensions+*
monadic do+*
infix operators**
numeric literals**
numeric sequences+*
n+k patterns**
Basic types
Bool**
Char**
List**
Tuples**
Int**
Integer**
Float**
Double**
Rational**
User types
data types**
type synonyms**
newtypes**
named fields+*
type classes**
derived instances**
strict types**
Haskell'98
vs. Hat
Actual (2.00)Planned

Input/output
single I/O streams**
file handling+*
Libraries
Prelude**
Ratio**
Complex**
Numeric**
Ix**
Array**
List**
Maybe**
Char**
Monad**
IO**
Directory**
System**
Time**
Locale**
CPUTime**
Random**
Platform Portability
machine and O/S**
nhc98**
ghc**
Non-Haskell'98 Extensions
primitive FFI**
IOExtras library-*
multi-parameter TCs-*
existentials--
concurrency--
parallelism--