// get the index of an already existing variable from the collection
public int indexOf(Variable v)
{
if(v == null) { return -1; }
for(int i=0;i<m_variables.Count();i++) {
if(v.id.Equals(m_variables[i].id, StringComparison.OrdinalIgnoreCase) &&
v.category == m_variables[i].category) {
return i;
}
}
return -1;
}
// remove an already existing variable
public bool remove(Variable v)
{
if(v == null) { return false; }
for(int i=0;i<m_variables.Count();i++) {
if(v.id.Equals(m_variables[i].id, StringComparison.OrdinalIgnoreCase) &&
v.category == m_variables[i].category) {
m_variables.RemoveAt(i);
return true;
}
}
return false;
}
// add an already existing variable
public bool add(Variable v)
{
if(v == null) { return false; }
if(!contains(v) && v.category < m_categories.Count()) {
m_variables.Add(v);
return true;
}
return false;
}