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Hacking with HHVM

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HACK – Collections<br />

contains($mappedName)) {<br />

return true;<br />

}<br />

}<br />

if ($nums2->count() == 0) return true;<br />

return false;<br />

}<br />

Specialized array objects<br />

▪ Vector, Set, Map, StableMap<br />

▪ Frozen*<br />

Mutable* (default)<br />

▪ Support ArrayAccess<br />

▪ Extensive library of methods

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