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using statement - ensure the correct use of disposable objects
When the control leaves the block of the using statement, an acquired IDisposable instance is disposed. In particular, the using statement ensures that a disposable instance is disposed even if an exception occurs within the block of the using statement. In the preceding example, an opened file is closed after all lines are processed.
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What are the uses of "using" in C#? - Stack Overflow
The reason for the using statement is to ensure that the object is disposed as soon as it goes out of scope, and it doesn't require explicit code to ensure that this happens.. As in Understanding the 'using' statement in C# (codeproject) and Using objects that implement IDisposable (microsoft), the C# compiler converts. using (MyResource myRes = new MyResource()) { myRes.DoSomething(); }
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What is the C# Using Statement? Why Use It? - C# Corner
The using statement in C# is exited when the end of the "using" statement block or the execution exits the "using" statement block indirectly, for example - an exception is thrown. The "using" statement allows you to specify multiple resources in a single statement. The object could also be created outside the "using" statement.
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Using Keyword in C++ STL - GeeksforGeeks
Manually, we have to write cout for the C++ statement 5 times as shown.C++#include <iostream> using namespace std; int. 7 min read. for Loop in C++ In C++, for loop is an entry-controlled loop that is used to execute a block of code repeatedly for the given number of times. It is generally preferred over while and do-while loops in ...
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Using Declarations in C# 8 with Examples - Dot Net Tutorials
Using Statement (Old Way) in C#. The using statement can be used to reference a variable or the result from a method that returns an instance, and at the end of the scope defined by the using statement, the Dispose method gets invoked automatically. For a better understanding, please have a look at the below example.
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C# using statement – Why and How? - DotNetPattern
Why to use C# using statement. C# provides a special “using” statement to call Dispose method explicitly. using statement gives you a proper way to call the Dispose method on the object. In using statement, we instantiate an object in the statement. At the end of using statement block, it automatically calls the Dispose method.
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Understanding the 'using' statement in C# - CodeProject
The using statement simplifies the code that you have to write to create and then finally clean up the object. The using statement obtains the resource specified, executes the statements and finally calls the Dispose method of the object to clean up the object. The following piece of code illustrates its use. using (TextWriter w = File ...
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using keyword - C# reference | Microsoft Learn
The using keyword has two major uses:. The using statement defines a scope at the end of which an object is disposed:; string filePath = "example.txt"; string textToWrite = "Hello, this is a test message!"; // Use the using statement to ensure the StreamWriter is properly disposed of using (StreamWriter writer = new StreamWriter(filePath)) { writer.WriteLine(textToWrite); }
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C++ keyword: using - cppreference.com
C++ keyword: using. From cppreference.com ... Iteration statements (loops) for: range-for (C++11) while: do-while: Jump statements: continue - break: goto - return: Functions: Function declaration: Lambda function expression: inline specifier: Dynamic exception specifications (until C++17*)
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C# using (With Examples) - Programiz
C# using to create an alias. We can also create aliases with the help of using in C#. For example, // creating alias for System.Console using Programiz = System.Console; namespace HelloWorld { class Program { static void Main(string[] args) { // using Programiz alias instead of System.Console Programiz.WriteLine("Hello World!");