(39) 's Extra Blueprint Nodes for You as a Plugin, No C++ Required!

[Rama]

New BP Node ~ Is Alpha Numeric

Dear Community,

BP node lets you find out if a string contains only letters and numbers!

is very useful when allowing users to pick login names and passwords!

**C++ Code For You**

My solution relies entirely on a core C++ function called isalnum.

So I am not making up my own solution, I am enabling you to call  core C++ function via a BP node, doing the necessary conversion to go from UE4 FString to c++ std::string / UTF8 char string



```


#include <string>
bool UVictoryBPLibrary::IsAlphaNumeric(const FString& String)
{
	std::string str = (TCHAR_TO_UTF8(*String));
	    
	for ( std::string::iterator it=str.begin(); it!=str.end(); ++it)
	{
		if(!isalnum(*it))
		{   
			return false;
		}
	}
	
	return true;
}


```



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