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Use constexpr to check memo validity #4249

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Use constexpr to check memo validity #4249

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7 changes: 3 additions & 4 deletions src/ripple/protocol/impl/STTx.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -481,11 +481,10 @@ isMemoOkay(STObject const& st, std::string& reason)
// The only allowed characters for MemoType and MemoFormat are the
// characters allowed in URLs per RFC 3986: alphanumerics and the
// following symbols: -._~:/?#[]@!$&'()*+,;=%
static std::array<char, 256> const allowedSymbols = [] {
std::array<char, 256> a;
a.fill(0);
static constexpr std::array<char, 256> const allowedSymbols = []() {
std::array<char, 256> a{};

std::string symbols(
std::string_view symbols(
"0123456789"
"-._~:/?#[]@!$&'()*+,;=%"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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