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Cекс видеоо





This article demonstrates several techniques to produce a string by modifying an existing string. All the techniques demonstrated return the result of the modifications as a new string object. To clearly demonstrate this, the examples all store the result in a new variable. You can then examine cекс видеоо the original cекс видеоо and the string resulting from the modification when you run each example.

The C examples in this article run in the Try. NET inline code runner and playground. Select the Run button to run an example in an interactive window. Cекс видеоо you execute the code, you can modify it and run the modified code by selecting Run again.

The modified code either runs in the interactive window or, if compilation fails, the interactive window displays all C compiler error messages. There are several techniques demonstrated cекс видеоо this article.

Cекс видеоо

You can replace existing text. You can search for patterns and replace matching text with other text. You can treat a string cекс видеоо a sequence of characters. You can also use convenience methods that remove white space. You should choose the techniques that most closely match your scenario. The preceding code demonstrates this immutable property of strings. You can see in the preceding example that the original string, sourceis not modified.

Cекс видеоо method creates a new string containing the modifications. The Replace method can replace either strings or single characters. In both cases, every occurrence of the sought text is replaced. You can use the String. Cекс видеооand String. TrimEnd methods to remove any leading or trailing white space. Cекс видеоо following code shows an example of each. The source string does not change; these methods return a new string with the modified contents.

Cекс видеоо

You can remove text from a string using the String. This method removes a number of characters starting at a specific index. The cекс видеоо example shows how to use String. IndexOf followed by Remove to remove text from a string:.

Cекс видеоо

You can use regular expressions to replace text matching patterns with new text, possibly defined by a cекс видеоо. The following example uses the System. Regex class to find a pattern in a source string and replace it with proper capitalization. Replace String, String, MatchEvaluator, RegexOptions method takes a function that provides the logic of the replacement as one of its arguments.

In this example, that function, LocalReplaceMatchCase is a local function declared inside the sample method. LocalReplaceMatchCase uses the System.

StringBuilder class to cекс видеоо the replacement string with proper capitalization. Regular expressions are most useful for cекс видеоо and replacing text that follows a pattern, rather than known cекс видеоо.

For more information on regular expression language elements, see Regular Expression Language - Quick Reference. ToString method returns an immutable string with the contents in the StringBuilder object.

Cекс видеоо

You can produce a character array from a string, modify the contents of the array, and then create a new string from the modified contents of the array.

The following example shows how cекс видеоо replace a set of characters in a string. First, it uses the ToCharArray method to create an array of characters. It uses the IndexOf method to find the cекс видеоо index of the word "fox.

Cекс видеоо

Finally, a new string is constructed from the updated character array. Using unsafe code, you can cекс видеоо a string "in place" after it has been created. Unsafe code bypasses many of the features of. NET designed to minimize certain types of bugs in code. You need to use unsafe code to modify a string in place because the string class is designed as an immutable type. Cекс видеоо it has been created, its value does not change.

Cекс видеоо

Unsafe code circumvents this property by accessing and cекс видеоо the memory used by a string without using normal string methods. The following example is provided for those rare situations where you cекс видеоо to modify a string in-place using unsafe code. The example shows how to use the cекс видеоо keyword. The fixed keyword prevents the garbage collector GC from moving the string object in memory while code accesses the memory using the unsafe pointer.

It also demonstrates one possible side effect of unsafe operations on strings that results from the way that the C compiler stores interns strings internally.

Cекс видеоо

You can learn more in the articles on unsafe and fixed. The API reference for Intern includes inforamtion on string interning. You can try these samples by looking at the code cекс видеоо our GitHub repository.

Cекс видеоо

Or you can download the samples as a zip file. Our new feedback system is built cекс видеоо GitHub Issues. Read about this change in our blog post. Note The Cекс видеоо examples in this article run in the Try.

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Cекс видеоо

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