5af2978f77
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12108 626c5289-ae23-0410-ae9c-e8d60b6d4f22
71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
// This example illustrates the manipulation of C++ references in Java.
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package main
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import (
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"fmt"
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. "./example"
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)
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func main() {
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fmt.Println("Creating some objects:")
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a := NewVector(3, 4, 5)
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b := NewVector(10, 11, 12)
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fmt.Println(" Created ", a.Print())
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fmt.Println(" Created ", b.Print())
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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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fmt.Println("Adding a+b")
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c := Addv(a, b)
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fmt.Println(" a+b = " + c.Print())
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// Because addv returns a reference, Addv will return a
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// pointer allocated using Go's memory allocator. That means
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// that it will be freed by Go's garbage collector, and we can
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// not use DeleteVector to release it.
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c = nil
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// ----- Create a vector array -----
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fmt.Println("Creating an array of vectors")
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va := NewVectorArray(10)
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fmt.Println(" va = ", va)
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// ----- Set some values in the array -----
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// These operators copy the value of Vector a and Vector b to
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// the vector array
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va.Set(0, a)
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va.Set(1, b)
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va.Set(2, Addv(a, b))
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// Get some values from the array
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fmt.Println("Getting some array values")
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for i := 0; i < 5; i++ {
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fmt.Println(" va(", i, ") = ", va.Get(i).Print())
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}
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// Watch under resource meter to check on this
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fmt.Println("Making sure we don't leak memory.")
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for i := 0; i < 1000000; i++ {
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c = va.Get(i % 10)
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}
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// ----- Clean up ----- This could be omitted. The garbage
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// collector would then clean up for us.
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fmt.Println("Cleaning up")
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DeleteVectorArray(va)
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DeleteVector(a)
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DeleteVector(b)
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}
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