OpenEuphoria

LOOP and (&= VS Append)

• Posted by Lewis Townsend <keroltarr at HOTMAIL.COM> Sep 11, 2000
• 422 views

Hello all,

I have added a minor update to LOOP lib. It now has
method polymorphism. All that means is that metods
belong to classes now. Before you can use a function or
a procedure as a method, you must created it and add it
to the classes that will use it. I haven't updated the
doc yet but it works the same way as properties now.

Also, I have experiemented with changing all the lines
that use "&=" to use append() instead. What I have found
is that the benchmarks actually show that it runs slower.
Now I was recently informed that append() was faster than
&= (I think by Irv M.) Perhaps the discrepancy is that
append is faster for simple appends while &= is faster
for appends with lots of subscripting which is the case
with LOOP.E. Does anyone have any specific facts about
this? Rob? Here is the benchmarks done with a program
provided to me by Michael Nelson:

LOOP lib benchmarks using append()
==================================
Benchmarks for LOOP.E by Lewis Townsend.
Times in seconds for 100000 iterations

Please press enter...
Entering LOOP oset() loop...
LOOP oset() time (less loop overhead):   0.44

Please press enter...
Entering LOOP oget() loop...
LOOP oget() time (less loop overhead):   0.27

Please press enter...
Entering LOOP CallFunc() loop...
LOOP CallFunc() time (less loop overhead):   0.44

Please press enter...
Entering LOOP NewObject() loop...
LOOP NewObject() time (less loop overhead):   5.55

Please press enter...
Entering LOOP Delete() loop...
LOOP Delete() time (less loop overhead):   0.22



LOOP lib benchmarks with &=
===========================
Benchmarks for LOOP.E by Lewis Townsend.
Times in seconds for 100000 iterations

Please press enter...
Entering LOOP oset() loop...
LOOP oset() time (less loop overhead):   0.43

Please press enter...
Entering LOOP oget() loop...
LOOP oget() time (less loop overhead):   0.27

Please press enter...
Entering LOOP CallFunc() loop...
LOOP CallFunc() time (less loop overhead):   0.38

Please press enter...
Entering LOOP NewObject() loop...
LOOP NewObject() time (less loop overhead):   5.38

Please press enter...
Entering LOOP Delete() loop...
LOOP Delete() time (less loop overhead):   0.17

==========================================

If anyone wants the program these benchmarks
were generated by, contact me or Mike Nelson.

later,
Lewis Townsend
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