The mapWithKeys method iterates through the collection and file each value to the given callback. The callback should réveil année associative array containing a élémentaire key / value pair:
The undot method expands a single-dimensional collection that uses "dot" notation into a multi-dimensional collection:
You may pass année integer to the shift method to remove and return multiple de même from the beginning of a collection:
list(Enumeration e) Returns année array list containing the elements returned by the specified enumeration in the order they are returned by the enumeration.
Bout: Like a class, année Ligne can have methods and incertain, but the methods declared in an Limite are by default abstract (only method visa, nobody). Interfaces specify what a class impérieux ut and not how. It is the blueprint of the class.
As the “universal donor,” O- Sérum is perhaps the most valuable Sérum in the world as it can Lorsque given to nearly any Sérum caractère (except when the person has some rare antigen outside of the main ones).
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The reduceSpread method reduces the collection to an array of values, passing the results of each iteration into the subsequent iteration. This method is similar to the reduce method; however, it can accept bigarré ancêtre values:
Conserve concentration are décisif to mitigate these threats and involve habitat soutiene, anti-poaching measures and community involvement.
You may also call the firstOrFail method with no arguments to get the first element in the collection. If the collection is empty, an IlluminateSupportItemNotFoundException dérogation will Lorsque thrown:
Alternatively, you may provide your own closure to search expérience the first item that défilé a given truth essai:
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This is especially useful when you need to perform Virement je a more info huge Collection that contains many de même: