In C, LINQ is a powerful query language that is used in the . .NET applications perform query operations on various data sources. Among them, range and repeat are two commonly used methods in LINQ, which are used to generate a series of consecutive numbers and repeat specified elements, respectively. Sometimes these two methods are confused, and this article will delve into the usage and application scenarios of these two methods.
1. Range method
The range method is used to generate a series of consecutive integers, which are declared as follows:
where start indicates the starting value and count indicates the number of integers generated. Here's a simple example of how to generate a series of integers using the range method:
try.dot.Net Experiment Results:
In the example above, enumerablerange(2, 5) generates a sequence of integers containing 5 elements, starting from 1.
2. repeat method
The repeat method is used to generate a sequence containing duplicate elements, which is declared as follows:
where element represents the element to be repeated, and count indicates the number of repetitions. Here's an example of using the repeat method:
try.dot.Net Experiment Results:
In the example above, enumerablerepeat(666, 6) generates a sequence of the number 666 containing 6 repeats.
3. Application scenarios
These two methods have a wide range of application scenarios in practical development. They can all play an important role in generating test data, initializing arrays, simulating indexes in loops, and so on. By using the range and repeat methods, developers can handle some common programming tasks more concisely and efficiently.
Range and repeat are two simple but powerful methods in LINQ that provide developers with some handy tools to process and generate data sequences more easily. In practical applications, the flexible use of these two methods can greatly improve the readability and conciseness of the **. I hope this article has given you a thorough understanding of the range and repeat methods and their differences.
Reference: learnmicrosoft.com/zh-cn/dotnet/csharp/linq/