Optimize my code =)

[Robin]

Hiho,

here are the results of both compilers (DMD and LDC2) on my 
system:

LDC:
=========================================
allocationTest ...
	Time required: 5 secs, 424 msecs
multiplicationTest ...
	Time required: 1 secs, 744 msecs
toStringTest ...
	Time required: 0 secs, 974 msecs
transposeTest ...
	Time required: 0 secs, 998 msecs
scalarMultiplicationTest ...
	Time required: 0 secs, 395 msecs
matrixAddSubTest ...
	Time required: 0 secs, 794 msecs
matrixEqualsTest ...
	Time required: 0 secs, 0 msecs
identityMatrixTest ...
	Time required: 0 secs, 393 msecs
=========================================

DMD:
=========================================
allocationTest ...
	Time required: 3 secs, 161 msecs
multiplicationTest ...
	Time required: 2 secs, 6 msecs
toStringTest ...
	Time required: 1 secs, 365 msecs
transposeTest ...
	Time required: 1 secs, 45 msecs
scalarMultiplicationTest ...
	Time required: 0 secs, 405 msecs
matrixAddSubTest ...
	Time required: 0 secs, 809 msecs
matrixEqualsTest ...
	Time required: 0 secs, 430 msecs
identityMatrixTest ...
	Time required: 0 secs, 350 msecs
=========================================

All in all I must say that I am more pleased with the DMD results 
as I am kind of worried about the LDC allocation test performance 
...

I also had to rewrite parts of the codes as some functions just 
weren't "pure" or "nothrow" such as the whole things around 
this.data[] += other.data[].

Robin