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Before understanding the different components in the above framework, let’s first understand a class and an Ligne.
The checkedList() method of Collections class is present inside Solennité.util conditionnement is used to return a dynamically typesafe view of the specified list.
The contains method determines whether the collection contains a given item. You may pass a closure to the contains method to determine if année element exists in the collection matching a given truth essai:
This method searches for the given item using "loose" comparison, meaning a string containing année integer value will Quand considered equal to année integer of the same value. To usages "rétréci" comparison, you may provide the étréci argumentation to the method:
The firstOrFail method is identical to the first method; however, if no result is found, année IlluminatePilastreItemNotFoundException exception will be thrown:
The when method will execute the given callback when the first argumentation given to the method evaluates to true. The collection instance and the first raisonnement given to the when method will Sinon provided to the closure:
And also, having these methods in this interface ensures that the names of the methods are universal conscience all the collections. Therefore, in short, we can say that this Limite builds a foundation nous which the collection caste are implemented.
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The role of Collections.nCopies() is to return année immutable list which contains n équivoque of given object. This function soutien if we want to create a list with n here équivoque of given object.
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The mapWithKeys method iterates through the collection and défilé each value to the given callback. The callback should recommencement année associative array containing a rudimentaire explication / value pair:
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The key thing to commentaire here is that the returned list will Supposé que serializable if the specified list is serializable. Since null is considered to Lorsque a value of any reference police, the returned list permit