Structure.getDouble

bool getDouble(string fieldname, out double value)

Sets the double pointed to by value corresponding to the value of the given field. Caller is responsible for making sure the field exists and has the correct type.

Parameters

`fieldname`	the name of a field
`value`	a pointer to a gdouble to set

Returns

true if the value could be set correctly. If there was no field

with fieldname or the existing field did not contain a double, this function returns false.