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<?php
 use mapache_commons\Collection;
 use mapache_commons\Debug;
 
 include "../lib/Collection.php";
 include "../lib/Debug.php";
 
 $countries=array("USA","Canada","Mexico","MapacheLand");
 $countriesAssoc=array("First"=>"USA","Second"=>"Canada","Third"=>"Mexico","Fourth"=>"MapacheLand");
 
 $countriesList=[];
 $countriesList[]=['Country'=>"USA",'Population'=>300];
 $countriesList[]=['Country'=>"Canada",'Population'=>50];
 $countriesList[]=['Country'=>"Mexico",'Population'=>80];
 
 $arrayComplex=array('Name'=>'John'
 ,'Age'=>33
 ,'Address'=>['Name'=>'MapacheLand','City'=>'Racoon City']);
 
 Debug::var_dump(Collection::first($countries));
 Debug::var_dump(Collection::first($countriesAssoc));
 Debug::var_dump(Collection::firstKey($countriesAssoc));
 
 echo Collection::generateTable($countriesList);
 
 Debug::var_dump(Collection::arrayKeyLower($arrayComplex));
 Debug::var_dump(Collection::arrayKeyUpper($arrayComplex));
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