# String extensions
Extensions to the `String` and `TStringArray` types.


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## String.Is
```pascal
function String.IsURL(): Boolean;
function String.IsEmail(): Boolean;
function String.IsUUID(): Boolean;
function String.IsUUIDV4(): Boolean;
function String.IsRefreshToken(): Boolean;
```
Checks if a string is a certain "thing" with some predefined regex patterns.


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## String.IsURL
```pascal
function String.IsURL(): Boolean;
```
Checks if a string is a valid "URL" with some predefined regex patterns.


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## String.IsEmail
```pascal
function String.IsEmail(): Boolean;
```
Checks if a string is a valid email address with some predefined regex patterns.


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## String.IsUUID
```pascal
function String.IsUUID(): Boolean;
```
Checks if a string is a "UUID" with some predefined regex patterns.


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## String.IsUUIDV4
```pascal
function String.IsUUIDV4(): Boolean;
```
Checks if a string is a "UUID V4" with some predefined regex patterns.


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## String.IsRefreshToken
```pascal
function String.IsRefreshToken(): Boolean;
```
Checks if a string is a "refresh token" with some predefined regex patterns.