StringExtensions

This page is about the StringExtensions class available in PeyrSharp.Extensions. You can find here all of its extension methods.

INFO

This class is static.

Compatibility

The StringExtensions class is part of the PeyrSharp.Extensions module, and is compatible with all of these frameworks and platforms:

Package/Platform	Windows	macOS	Linux + others
Extensions	✅	✅	✅
Framework	.NET 6	.NET 7	.NET 8
Extensions	✅	✅	✅

Methods

CountWords()

Definition

Counts the number of words in a string. Returns int.

Arguments

This method has no arguments.

Usage

using PeyrSharp.Extensions;

int numberOfWords = "Hello, this is a test sentence!".CountWords();
// numberOfWords = 6

CountWords(wordSeparator)

Definition

Counts the number of words in a string, with specified word separators. By default, the method uses those (if you don't pass any argument to it): , ,, ;, ., :, !, ?. Returns int.

Arguments

Type	Name	Meaning
string[]	wordSeparator	The separator of the words.

Usage

using PeyrSharp.Extensions;

string[] wordSeparator = { " ", ",", ":", "!", "?", ";", "." };
int numberOfWords = "Hello, this is a test sentence!".CountWords(wordSeparator);
// numberOfWords = 6

EndsWithSamePunctuation(stringToCheck)

Definition

Checks if a string is ending with the same punctuation than an other one. Returns a bool; true if it is the case.

Arguments

Type	Name	Meaning
string	stringToCheck	The string to compare.

Usage

using PeyrSharp.Extensions;

string a = "This is a test sentence.";
string b = "This is an another test sentence.";

a.EndsWithSamePunctuation(b); // true

EndsWithSamePunctuation(stringToCheck, punctuationToCheck)

Definition

Checks if a string is ending with the same specified punctuation than an other one. Returns a bool; true if it is the case.

Arguments

Type	Name	Meaning
string	stringToCheck	The string to compare.
string	punctuationToCheck	The punctuation sign to check for.

Usage

using PeyrSharp.Extensions;

string a = "This is a test sentence.";
string b = "This is an another test sentence.";

a.EndsWithSamePunctuation(b, "."); // true

EncryptAes(key)

Definitions

Encrypts a string using AES encryption. Returns the encrypted content as a string as well.

Arguments

Type	Name	Meaning
string	key	The encryption key. This is the same key that will be used to decrypt the text.

Usage

using PeyrSharp.Core;

string encrypted = "Hello!".EncryptAes("password");
// encrypted = 6NvvTBntd2PdFxXzVbccLw==

DecryptAes(key)

Definitions

Decrypts a string using AES encryption. Returns the decrypted content as a string as well.

Arguments

Type	Name	Meaning
string	key	The encryption key that was used during the encryption process.

Usage

using PeyrSharp.Core;

string text = "6NvvTBntd2PdFxXzVbccLw==".DecryptAes("password");
// text = Hello!

HasRepeatedCharacters()

Definition

Checks if a letter or character is being repeated in a string. Returns bool.

INFO

Only returns true if a character is repeated more than three times. For instance, "11" will return false, whereas "aaaa" will return true.

Arguments

This methods has no arguments.

Usage

using PeyrSharp.Extensions;

"111".HasRepeatedCharacters(); // true

SplitLines()

Definition

Splits a string lines to an array. Returns string[].

INFO

The method uses the string.Split() method under the hood, which means that it is providing it the following separators: \n, \r, \r\n.

Arguments

This methods has no arguments.

Usage

using PeyrSharp.Extensions;

string[] lines = "Hello\nWorld".SplitLines();
// lines = { "Hello", "World" }

ToUpperAt(str, r)

Definition

Returns a new string in which the characters in a specified range of the current string are converted to uppercase. Returns a string that is equivalent to the current string, but with the characters in the specified range converted to uppercase.

Arguments

Type	Name	Meaning
string	str	The string to modify.
Range	r	The range of characters to convert to uppercase.

Usage

using PeyrSharp.Extensions;

string str = "aBcDeFgHiJ";
string upper = str.ToUpperAt(2..6); // Convert the characters at indexes 2 to 6 (inclusive) to uppercase
// upper = "aBCDEFGhij"

ToUpperAt(s)

Definition

Uppercases the first letter of a string. Returns a string with the first letter uppercased.

Arguments

Type	Name	Meaning
string	s	The string to capitalize.

Usage

using PeyrSharp.Extensions;

string str = "test";
string upper = str.ToUpperAt(); // Uppercase the first letter of the string
// upper = "Test"

ToLowerAt(s)

Definition

Uppercases the first letter of a string. Returns the input string with the first letter lowercased.

Arguments

Type	Name	Meaning
string	s	The string to lowercase.

Usage

using PeyrSharp.Extensions;
phrase.ToLowerAt(); // "hello world"

ToLowerAt(str, r)

Definition

Returns a new string in which the characters in a specified range of the current string are converted to lowercase.

Arguments

Type	Name	Meaning
string	str	The string to modify.
Range	r	The range of characters to convert to lowercase.

Returns

A string that is equivalent to the current string, but with the characters in the specified range converted to lowercase.

Usage

using PeyrSharp.Extensions;
string result = text.ToLowerAt(range); // "This is a test sentence."

Reverse(input)

Definition

Reverses a string.

Arguments

Type	Name	Description
string	input	The string to reverse.

Returns

A string representing the reversed input.

Usage

using PeyrSharp.Extensions;

string reversed = "Hello, world!".Reverse();
// Output: "!dlrow ,olleH"