On 2012-03-09 02:13, Johan Tibell wrote:
Hi,
I just ran across some code that calls unsafeThawArray#, writeArray#,
and unsafeFreezeArray#, in that order. How unsafe is that?
Quick follow up question:
Are unsafeThawArray# and unsafeFreezeArray# guaranteed to not make a copy? I.e.
are these two pieces of code equivalent with respect to further usage of the
return value:
do mary <- unsafeThawArray# ary
writeArray# mary 123# newValue
unsafeFreezeArray# mary
and
do mary <- unsafeThawArray# ary
writeArray# mary 123# newValue
return ary
(where do notation is actually done manually.)
Twan
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