ue4c++格式化字符串

https://alom.com.cn/20220727/ue4/2022-07-27-ue4%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%A0%BC%E5%BC%8F%E5%8C%96/

函数说明

• Format the specified string using the specified arguments. Replaces instances of {0} with indices from the given array matching the index specified in the token
• @param InFormatString A string representing the format expression
• @param InOrderedArguments An array of ordered arguments that match the tokens specified in InExpression
• @return A string containing the formatted text

UE_NODISCARD static FString Format(const TCHAR* InFormatString, const FStringFormatOrderedArguments& InOrderedArguments);

例子

TArray<FStringFormatArg> FormatArray;
FormatArray.Add(FStringFormatArg(1));
FormatArray.Add(FStringFormatArg("2"));
FString fmt = FString::Format(TEXT("arg1 {0} arg2 {1}"), FormatArray);
if (GEngine)
{
    GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::White, fmt);
}