UGameplayStatics::HasOption

function Engine Blueprint Since 4.0

#include "Kismet/GameplayStatics.h"

Access: public Specifiers: staticBlueprintPure

Description

Returns true if the specified key exists anywhere in a URL options string, regardless of its associated value. Use this before ParseOption when you need to distinguish a key with an empty value from a missing key.

Caveats & Gotchas

• A key present with an empty value (e.g. '?Spectate=') will return true; use HasOption to detect presence, then ParseOption only when the value itself matters.
• Like ParseOption, the comparison is case-insensitive and Options is taken by value so the caller's string is not modified.

Signature

static ENGINE_API bool HasOption( FString Options, const FString& InKey );

Parameters

Name	Type	Description	Default
Options	FString	The full options string to search.	—
InKey	const FString&	The key to check for existence.	—

Return Type

bool

Example

Conditional logic based on flag presence in InitGame C++

void AMyGameMode::InitGame(const FString& MapName, const FString& Options, FString& ErrorMessage)
{
    Super::InitGame(MapName, Options, ErrorMessage);
    if (UGameplayStatics::HasOption(Options, TEXT("Spectate")))
    {
        bAllowSpectators = true;
    }
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

Feedback

Was this helpful?