diff options
Diffstat (limited to 'src/util')
-rw-r--r-- | src/util/string.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/util/string.h b/src/util/string.h index cdb41630c6..a0c87bd00c 100644 --- a/src/util/string.h +++ b/src/util/string.h @@ -7,6 +7,8 @@ #include <attributes.h> +#include <algorithm> +#include <array> #include <cstring> #include <locale> #include <sstream> @@ -74,4 +76,15 @@ std::string ToString(const T& t) return oss.str(); } +/** + * Check whether a container begins with the given prefix. + */ +template <typename T1, size_t PREFIX_LEN> +NODISCARD inline bool HasPrefix(const T1& obj, + const std::array<uint8_t, PREFIX_LEN>& prefix) +{ + return obj.size() >= PREFIX_LEN && + std::equal(std::begin(prefix), std::end(prefix), std::begin(obj)); +} + #endif // BITCOIN_UTIL_STRENCODINGS_H |