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Set Class
Set consist of a data set that contains values of the same type, where value is unique.
A Set is alway sorted on the value.
Contents
How to use[edit]
Define[edit]
<xpp> Set s = new Set(Types::STRING); </xpp>
Insert a value[edit]
<xpp> s.add("Wassini"); s.add("Eric"); </xpp>
Exists value[edit]
To see if a value already is added, use the in method: <xpp> if (s.in("Wassini"))
print "Yes!";
else
print "No!";
</xpp>
Getting values[edit]
There are several ways to get the values in the set.
- Using a SetIterator
- Using a SetEnumerator
SetIterator[edit]
The SetIterator loops throug the complete set:
<xpp> SetIterator si;
si = new SetIterator(s);
while (si.more()) {
print si.value();
si.next();
} </xpp>
SetEnumerator[edit]
SetEnumerator class is like SetIterator class, but does not allows the deletion of elements during enumeration and SetIterator does. <xpp> SetEnumerator se=s.getEnumerator();
while (se.moveNext()) {
print se.current();
} </xpp>
Removing values[edit]
Just use the remove method to remove the active value.
<xpp> s.remove("Wassini"); </xpp>
Other methods[edit]
<xpp> // Get number of elements: print s.elements();
// Determines whether the set is empty: print s.empty();
// Get the type of the values print s.typeId();
// Get a description of the type of the elements: print s.definitionString();
// Dump the whole set as a string: print s.toString(); </xpp>
Passing across tiers[edit]
The Set can be passed across tiers by converting it to a container. The pack method converts it to a container: <xpp> container packedSet = s.pack(); </xpp> To convert the packed container back to a Set, call the static create method of the Set class: <xpp> Set s = Set:create(packedSet); </xpp>
