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Two
Atom Vectors (AVs) can be compared. An Atom Vector
is determined to be smaller than another if the
length of the vector of the first AV is smaller
than the second. If the AVs are of the same length,
the comparison is between the magnitudes of the two
vectors. Finally, the individual elements of the
AVs are compared and a result is declared as soon
as there is a mismatch.
Thus,
the only meaningful comparison is that for
equality.
The
following example is self-explanatory:
>>> from Yup.Taro.AtomVect import *
>>> A = AtomVector( numatom=3, sample='UNIFORM' )
>>> B = AtomVector( numatom=3, sample='UNIFORM' )
>>> A
AtomVector[3:3] {
-0.0277413 0.648549 0.382733
-0.0690634 -0.89526 0.656545
-0.404462 0.547166 0.0104678
}
>>> B
AtomVector[3:3] {
0.750603 0.832209 0.22074
0.44554 0.263894 -0.966918
-0.0707724 -0.531358 -0.292947
}
>>> A < B
1
>>> A > B
0
>>> A == B
0
>>> A.fill( copy=B )
>>> A
AtomVector[3:3] {
0.750603 0.832209 0.22074
0.44554 0.263894 -0.966918
-0.0707724 -0.531358 -0.292947
}
>>> A == B
1
>>> A is B
0
>>>
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In
the second part of the example,
B
is copied to A
and therefore the equality operation returns 1,
i.e., true. A
and B
are not the same objects as the
is
operator affirms.
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