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Merge bitcoin/bitcoin#29606: refactor: Reserve memory for ToLower/ToUpper conversions

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6f2f4a4d09 Reserve memory for ToLower/ToUpper conversions (Lőrinc)

Pull request description:

  Similarly to https://github.com/bitcoin/bitcoin/pull/29458, we're preallocating the result string based on the input string's length.
  The methods were already [covered by tests](https://github.com/bitcoin/bitcoin/blob/master/src/test/util_tests.cpp#L1250-L1276).

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Tree-SHA512: e3ba7af77decdc73272d804c94fef0b11028a85f3c0ea1ed6386672611b1c35fce151f02e64f5bb5acb5ba506aaa54577719b07925b9cc745143cf5c7e5eb262
This commit is contained in:
Ava Chow 2024-03-13 08:18:01 -04:00
commit c38157b9b9
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1 changed files with 2 additions and 0 deletions
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2
src/util/strencodings.cpp
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@ -446,6 +446,7 @@ bool ParseFixedPoint(std::string_view val, int decimals, int64_t *amount_out)
std::string ToLower(std::string_view str)
{
std::string r;
r.reserve(str.size());
for (auto ch : str) r += ToLower(ch);
return r;
}
@ -453,6 +454,7 @@ std::string ToLower(std::string_view str)
std::string ToUpper(std::string_view str)
{
std::string r;
r.reserve(str.size());
for (auto ch : str) r += ToUpper(ch);
return r;
}