Is it possible use default arguments with member initialization lists?
Vector3::Vector3(double xI, double yI, double zI)
: x(xI=0), y(yI=0), z(zI=0)
{
}
The constructor always sets x, y, and z to 0 even if you call it with setting the arguments.
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Daniel Node.js
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3Why not just `Vector3::Vector3(double xI=0, double yI=0, double zI=0) ...`? – Oliver Charlesworth Jun 05 '13 at 00:27
2 Answers
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Vector3(double xI=0, double yI=0, double zI=0);
Vector3::Vector3(double xI, double yI, double zI)
: x(xI), y(yI), z(zI)
{
}
Also, if you are wondering what your code is doing, it's simply setting your parameters to be 0, then passing the value of them (now 0) to initialize the members.
matt
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Doesn't work. `error: no matching function for call to Vector3::Vector3(double, double)` – Daniel Node.js Jun 05 '13 at 00:31
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@matt Ah. I found it. You need to remove the `=0` parts from the implementation and only have it on the declaration. – Daniel Node.js Jun 05 '13 at 00:50
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The assignment operator = always return what it has assigned to left side variable, in your case it return 0, which get assigned to x,y and z.
AlexDan
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