4601dec946
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@791 626c5289-ae23-0410-ae9c-e8d60b6d4f22
72 lines
1.7 KiB
Python
72 lines
1.7 KiB
Python
# file: example.py
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# This file illustrates the manipulation of C++ references in Python
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# This uses the low-level interface. Shadow classes work differently.
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import example
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# ----- Object creation -----
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print "Creating some objects:"
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a = example.new_Vector(3,4,5)
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b = example.new_Vector(10,11,12)
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print " Created",example.Vector_print(a)
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print " Created",example.Vector_print(b)
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# ----- Call an overloaded operator -----
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# This calls the wrapper we placed around
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#
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# operator+(const Vector &a, const Vector &)
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#
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# It returns a new allocated object.
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print "Adding a+b"
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c = example.addv(a,b)
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print " a+b =", example.Vector_print(c)
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# Note: Unless we free the result, a memory leak will occur
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example.delete_Vector(c)
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# ----- Create a vector array -----
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# Note: Using the high-level interface here
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print "Creating an array of vectors"
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va = example.new_VectorArray(10)
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print " va = ",va
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# ----- Set some values in the array -----
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# These operators copy the value of $a and $b to the vector array
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example.VectorArray_set(va,0,a)
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example.VectorArray_set(va,1,b)
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# This will work, but it will cause a memory leak!
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example.VectorArray_set(va,2,example.addv(a,b))
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# The non-leaky way to do it
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c = example.addv(a,b)
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example.VectorArray_set(va,3,c)
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example.delete_Vector(c)
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# Get some values from the array
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print "Getting some array values"
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for i in range(0,5):
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print " va(%d) = %s" % (i, example.Vector_print(example.VectorArray_get(va,i)))
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# Watch under resource meter to check on this
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print "Making sure we don't leak memory."
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for i in xrange(0,1000000):
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c = example.VectorArray_get(va,i % 10)
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# ----- Clean up -----
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print "Cleaning up"
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example.delete_VectorArray(va)
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example.delete_Vector(a)
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example.delete_Vector(b)
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