> ## Documentation Index
> Fetch the complete documentation index at: https://udcore.unrealdirective.com/llms.txt
> Use this file to discover all available pages before exploring further.
# String Functions
### ContainsLetters
Detects if the provided string contains any letters.
```cpp theme={null}
FString StringToCheck = "Example123"
bool bHasLetters = UUDCoreFunctionLibrary::ContainsLetters(StringToCheck);
```
**Inputs**
The string to check.
**Outputs**
True if the string contains letters.
### ContainsNumbers
Detects if the provided string contains any numbers.
```cpp theme={null}
FString StringToCheck = "Example123"
bool bHasNumbers = UUDCoreFunctionLibrary::ContainsNumbers(StringToCheck);
```
**Inputs**
The string to check.
**Outputs**
True if the string contains numbers.
### ContainsSpaces
Detects if the provided string contains any spaces.
```cpp theme={null}
FString StringToCheck = "Example 123"
bool bHasSpaces = UUDCoreFunctionLibrary::ContainsSpaces(StringToCheck);
```
**Inputs**
The string to check.
**Outputs**
True if the string contains spaces.
### ContainsSpecialCharacters
Detects if the provided string contains any special characters.
```cpp theme={null}
FString StringToCheck = "Example!@#"
bool bHasSpecialCharacters = UUDCoreFunctionLibrary::ContainsSpecialCharacters(StringToCheck);
```
**Inputs**
The string to check.
**Outputs**
True if the string contains special characters.
### FilterCharacters
Filters out character types from the string.
```cpp theme={null}
FString StringToCheck = "Example 123 !@#"
bool bFilterOutLetters = false;
bool bFilterOutNumbers = false;
bool bFilterOutSpecialCharacters = true;
bool bFilterOutSpaces = true;
FString FilteredString = UUDCoreFunctionLibrary::FilterCharacters(
StringToCheck,
bFilterOutLetters,
bFilterOutNumbers,
bFilterOutSpecialCharacters,
bFilterOutSpaces);
// Result: FilteredString = "Example123"
```
**Inputs**
The string to filter.
If true, filter out letters.
If true, filter out numbers.
If true, filter out special characters.
If true, filter out spaces.
**Outputs**
The filtered string.
### GetSortedStringArray
Returns a sorted copy of the provided string array.
```cpp theme={null}
TArray SortedArray = UUDCoreStringFunctionLibrary::GetSortedStringArray(OriginalArray);
```
**Inputs**
The string array to sort.
**Outputs**
A sorted copy of the provided string array.