Description
Returns true if this string begins with the specified prefix. The comparison is case-insensitive by default. An empty prefix always returns true.
Signature
bool StartsWith(const FString& InPrefix, ESearchCase::Type SearchCase = ESearchCase::IgnoreCase) constParameters
| Name | Type | Description | Default |
|---|---|---|---|
| InPrefix | const FString& | The prefix to search for at the start of the string. | — |
| SearchCase | ESearchCase::Type | Whether the comparison is case-sensitive or case-insensitive. | ESearchCase::IgnoreCase |
Return Type
bool Caveats & Gotchas
- • Like Contains, the default is case-insensitive. Pass ESearchCase::CaseSensitive for asset paths or identifiers where case matters.
- • An empty prefix string always returns true.
- • When checking multiple prefixes in sequence, consider building a lookup table or using a regex alternative — repeated StartsWith calls are each O(n) and can add up in hot loops.
Example
Check asset path prefix C++
FString Path = TEXT("/Game/Characters/Hero_BP");
if (Path.StartsWith(TEXT("/Game/Characters")))
{
// filter to character assets only
}See Also
Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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