Extendy - a simple library of extension methods for C#

Why use Extendy?

If you find yourself constantly needing to write extension methods or tediously re-write implementations of them, then this package is right for you. Rather than doing all of that yourself, you can simply install Extendy. Now you can just use methods such as yourVar.EqualsIgnoreCase(otherVar) instead of the overly verbose yourVar.Equals(someOtherVar, StringComparison.OrdinalIgnoreCase).

Can I contribute?

Absolutely! Open an issue up and we'll discuss your proposal. I don't want this repo to become bloated with too many methods. They are meant to be practical and used often. More niche ones can be found elsewhere or written into your project.

Which extenson methods are in Extendy?

There are four main sections, with the strings namespace broken into four further ones. I've considered consolidating them into one, but I don't want to bloat IntelliSense.
These are the namespaces available for import, which link to their corresponding methods and descriptions

Extendy.Collections
Extendy.DateTimes
Extendy.Enums
Extendy.Strings.Common
Extendy.Strings.Modification
Extendy.Strings.Searching
Extendy.Strings.TypeChecks

Extendy.Collections

Method	Summary
ContainsAny<TSource, TValues>(params T[] values)	Checks whether any of the values exist in the source
ContainsAny<T>(params T[] values)	Checks whether any of the values exist in the source
AddRange<TSource, TValues>(params T[] values)	Adds the specified values to the collection
RemoveDuplicates<T>()	Removes duplicate values from the collection
DistinctBy<TSource, TValues>(Func keySelector)	Returns distinct elements from a sequence based on a function.

Extendy.DateTimes

Method	Summary
IsToday()	Determines whether or not the input date is the same year, month, and day as the current day
IsTodayUtc()	Determines whether or not the input date is the same year, month, and day as the current UTC day
IsSameDay(DateTime otherDate)	Determines whether or not the input date is the same year, month, and day as the other date

Extendy.Enums

Method	Summary
ToEnum<T>()	Converts a string to the provided enum type
ToEnum<T>(bool ignoreCase)	Converts a string to the provided enum type

Extendy.Strings.Common

Method	Summary
EqualsIgnoreCase(string value)	Determines whether this instance and another specified string object are the same value, agnostic of case.
ContainsIgnoreCase(string value)	Returns a value indicating whether a specified substring occurs within this string, agnostic of case.
StartsWithIgnoreCase(string value)	Determines whether the beginning of this string instance matches the specified string.
EndsWithIgnoreCase(string value)	Determines whether the end of this string instance matches the specified string.

Extendy.Strings.Modification

Method	Summary
ReplaceIgnoreCase(string oldValue, string newValue)	Returns a new string in which all occurrences of a specified string, case agnostic, in the current instance are replaced with another specified string.
ReplaceIgnoreCase(char oldValue, char newValue)	Returns a new string in which all occurrences of a specified Unicode character, case agnostic, in the current instance are replaced with another specified Unicode character.
RemoveAll(string toRemove)	Returns a new string in which all occurrences of toRemove in the current instance have been deleted.
RemoveAll(char toRemove)	Returns a new string in which all occurrences of the toRemove char in the current instance have been deleted.
RemoveAllIgnoreCase(string toRemove)	Returns a new string in which all occurrences of toRemove, case agnostic, in the current instance have been deleted.
RemoveAllIgnoreCase(char toRemove)	Returns a new string in which all occurrences of the toRemove char, case agnostic, in the current instance have been deleted.
Left(int length)	Returns the left substring of a given length from the current string object.
Right(int length)	Returns the right substring of a given length from the current string object.
Reverse()	Inverts the order of the elements in a string
TrimIgnoreCase(char trimChar)	Removes all the occurrences of the given character at the start and end of the current string object, case agnostic.
TrimStartIgnoreCase(char trimChar)	Removes all the occurrences of the given character at the start of the current string object, case agnostic.
TrimEndIgnoreCase(char trimChar)	Removes all the occurrences of the given character at the end of the current string object, case agnostic.
TrimIgnoreCase(char[] trimChars)	Removes all the occurrences of a set of Unicode characters from the start and end of the current string object, case agnostic.
TrimStartIgnoreCase(char[] trimChars)	Removes all the occurrences of a set of Unicode characters from the start of the current string object, case agnostic.
TrimEndIgnoreCase(char[] trimChars)	Removes all the occurrences of a set of Unicode characters from the end of the current string object, case agnostic.

Extendy.Strings.Searching

Method	Summary
ContainsAny(string[] anyOf)	Determines whether this string occurs in anyOf or not.
ContainsAnyIgnoreCase(string[] anyOf)	Determines whether this string occurs in anyOf or not, case agnostic.
IndexOfIgnoreCase(string value)	Reports the zero-based index of the first occurrence of the specified string in this instance, case agnostic.
IndexOfIgnoreCase(string value, int startIndex)	Reports the zero-based index of the first occurrence of the specified string in this instance, case agnostic. The search starts at a specified index.
IndexOfIgnoreCase(string value, int startIndex, int count)	Reports the zero-based index of the first occurrence of the specified string in this instance, case agnostic. The search starts at a specified index and examines a specified number of positions.
IndexOfIgnoreCase(char value)	Reports the zero-based index of the first occurrence of the specified Unicode character in this instance, case agnostic.
IndexOfIgnoreCase(char value, int startIndex)	Reports the zero-based index of the first occurrence of the specified Unicode character in this instance, case agnostic. The search starts at a specified index.
IndexOfIgnoreCase(char value, int startIndex, int count)	Reports the zero-based index of the first occurrence of the specified Unicode character in this instance, case agnostic. The search starts at a specified index and examines a specified number of positions.
LastIndexOfIgnoreCase(string value)	Reports the zero-based index of the last occurrence of the specified string in this instance, case agnostic.
LastIndexOfIgnoreCase(string value, int startIndex)	Reports the zero-based index of the last occurrence of the specified string in this instance, case agnostic. The search starts at a specified index and works backwards through the string.
LastIndexOfIgnoreCase(string value, int startIndex, int count)	Reports the zero-based index of the last occurrence of the specified string in this instance, case agnostic. The search starts at a specified index and works backwards through the string for the specified number of character positions.
LastIndexOfIgnoreCase(char value)	Reports the zero-based index of the last occurrence of the specified Unicode character in this instance, case agnostic.
LastIndexOfIgnoreCase(char value, int startIndex)	Reports the zero-based index of the last occurrence of the specified Unicode character in this instance, case agnostic. The search starts at a specified index and works backwards through the string.
LastIndexOfIgnoreCase(char value, int startIndex, int count)	Reports the zero-based index of the last occurrence of the specified Unicode character in this instance, case agnostic. The search starts at a specified index and works backwards through the string for the specified number of character positions.

Extendy.Strings.TypeChecks

Method	Summary
IsNumeric()	Determines whether this instance contains only numeric characters
IsAlphabetic()	Determines whether this instance contains only alphabetic characters.
IsAlphaNumeric()	Determines whether this instance contains only alphabetic and/or numeric characters.
IsUpper()	Determines whether this instance contains only uppercase alphabetic characters.
IsLower()	Determines whether this instance contains only lowercase alphabetic characters.