# String
String related methods


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## String.Len
```pascal
function String.Len(): Int32; constref;
```
Returns the length of the string


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## String.Pos
```pascal
function String.Pos(SubStr: String): Int32; constref;
```
Returns the position of the position of the first occurance of the substring


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## String.PosR
```pascal
function String.PosR(SubStr: String): Int32; constref;
```
Returns the position of the position of the last occurance of the substring


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## String.PosEx
```pascal
function String.PosEx(SubStr: String): TIntegerArray; constref;
```
Returns the position of every occurance of the substring


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## String.Contains
```pascal
function String.Contains(subString: String): Boolean; constref;
```
Returns true if the substring exists on the string.


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## String.ContainsAny
```pascal
function String.ContainsAny(subStrings: TStringArray): Boolean; constref;
```
Returns true if any of the substrings exists on the string.


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## String.ContainsAll
```pascal
function String.ContainsAll(subStrings: TStringArray): Boolean; constref;
```
Returns true if all of the substrings exist on the string.


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## String.Startswith
```pascal
function String.Startswith(Prefix: String): Boolean; constref;
```
Returns `True` if the string starts with the given string `Prefix`


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## String.Endswith
```pascal
function String.Endswith(Suffix: String): Boolean; constref;
```
Returns `True` if the string ends with the given string `Suffix`


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## String.Capitalize
```pascal
function String.Capitalize(): String; constref;
```
Returns the string with every word captalized


- - -

## String.Upper
```pascal
function String.Upper(): String; constref;
```
Returns the string with every character converted to uppercase


- - -

## String.Lower()
```pascal
function String.Lower(): String; constref;
function String.ToLower(): String; constref;
```
Returns the string with every character converted to lowercase


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## String.After
```pascal
function String.After(SubStr: String): String; constref;
```
Copy the string from after the first occurrence of SubStr


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## String.Before
```pascal
function String.Before(SubStr: String): String; constref;
```
Copy the string from before the first occurrence of SubStr


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## String.Count
```pascal
function String.Count(Str: String): Int32; constref;
```
Count the number of occurrences of the given string.


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## String.Replace
```pascal
function String.Replace(SubStr, ReplaceStr: String; Flags: TReplaceFlags=[rfReplaceAll]): String; constref;
```
Replace [all by default] occurrences of the given SubStr with with ReplaceStr


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## String.Split
```pascal
function String.Split(delimiter: String): TStringArray; constref;
```
Split up the string at each delimiter into smaller strings


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## String.Trim
```pascal
function String.Trim(chars:String = STR_WHITESPACE): String; constref;
function String.Strip(chars:String = STR_WHITESPACE): String; constref;
```
Return a copy of the string with leading and trailing characters removed.


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## String.IsAlphaNum
```pascal
function String.IsAlphaNum(): Boolean; constref;
```
Test if a string only contains alpha numerical characters.


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## String.IsDigit
```pascal
function String.IsDigit(): Boolean; constref;
```
Test if a sting is a digit


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## String.IsFloat
```pascal
function String.IsFloat(): Boolean; constref;
```
Test if a string is a floating point number


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## String.IsAlpha
```pascal
function String.IsAlpha(): Boolean; constref;
```
Test if a string only contains letters a-zA-Z


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## String.ExtractNumbers
```pascal
function String.ExtractNumbers(): TExtendedArray; constref;
```
Extract all the numbers found in the string, as there could be floating point numbers 
as well it reutnrs a TExtendedArray.


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## String.ExtractNumbersEx
```pascal
function String.ExtractNumbersEx(): TExtendedArray; constref;
```
Extract all the numbers found in the string, this time every number 
ends up in each their index. For example ``'1234'`` would return ``[1,2,3,4]``


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## String.FileExt
```pascal
function String.FileExt(): String; constref;
```
Returns the file extension


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## String.FileName
```pascal
function String.FileName(): String; constref;
```
Returns the file name


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## String.Hex
```pascal
function String.Hex(): string; constref;
```
Returns the hexadecimal value that represents the string.


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## operator string * int32
```pascal
operator * (left:String; Right:Int32): String;
```
Replicates the string the given amount of times. So ``'ho!' * 3`` would generate ``ho!ho!ho!``


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## operator string in string
```pascal
operator in (left:String; Right:String): Boolean;
```
Returns ``True`` if the string exists in the other string. So ``'hell' in 'hello world'`` would be ``True``