System::Collections::Generic::IEnumerable::LINQ_FirstOrDefault method
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]IEnumerable::LINQ_FirstOrDefault() method
Returns the first element of a sequence, or a default value if the sequence is empty.
T System::Collections::Generic::IEnumerable<T>::LINQ_FirstOrDefault()
ReturnValue
First element in the sequence or default-constructed value if the sequence is empty.
See Also
- Class IEnumerable
- Namespace System::Collections::Generic
- Library Aspose.PDF for C++
IEnumerable::LINQ_FirstOrDefault(std::function<bool(T)>) method
Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
T System::Collections::Generic::IEnumerable<T>::LINQ_FirstOrDefault(std::function<bool(T)> predicate)
| Parameter | Type | Description |
|---|---|---|
| predicate | std::function<bool(T)> | A function to test each element for a condition. |
ReturnValue
default(T) if source is empty or if no element passes the test specified by predicate; otherwise, the first element in source that passes the test specified by predicate.
See Also
- Class IEnumerable
- Namespace System::Collections::Generic
- Library Aspose.PDF for C++