getfflag

Reads the current value of a Roblox Fast Flag.

getfflag(name: string): any

Pass the flag’s literal name, without a prefix (e.g. "EnablePreloading", not "DFFlagEnablePreloading").

Flag names follow one of six type prefixes: FFlag / DFFlag (booleans), FInt / DFInt (integers), FString / DFString (strings). The leading D marks dynamic flags, which refresh at runtime; the rest lock at session start.

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Parameters

Parameter	Type	Description
name	string	Flag name.

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Returns

Return type tracks the flag’s declared type:

Flag prefix	Returns
FFlag or DFFlag	boolean
FInt or DFInt	number
FString or DFString	string

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Example

Example 1

local preloading = getfflag("EnablePreloading")

Roblox configuration Fast Flags control various engine properties.