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Optimize FromUnderscoreDashSeparatedWords to reduce allocations #1660

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Optimize FromUnderscoreDashSeparatedWords to reduce allocations #1660

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96fcb0c
Optimize FromUnderscoreDashSeparatedWords to reduce allocations
alexzzzs Dec 30, 2025
8403780
Use MemoryExtensions.Replace instead of manual for loop
alexzzzs Jan 7, 2026
f3a7a45
fix indentation/whitespace
alexzzzs Jan 8, 2026
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17 changes: 14 additions & 3 deletions src/Humanizer/StringHumanizeExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -32,8 +32,19 @@ public static partial class StringHumanizeExtensions
private static Regex FreestandingSpacingCharRegex() => FreestandingSpacingCharRegexField;
#endif

static string FromUnderscoreDashSeparatedWords(string input) =>
string.Join(" ", input.Split(['_', '-']));
static string FromUnderscoreDashSeparatedWords(string input)
{
#if NET7_0_OR_GREATER
return string.Create(input.Length, input, (span, state) =>
{
state.AsSpan().CopyTo(span);
span.Replace('_', ' ');
span.Replace('-', ' ');
});
#else
return input.Replace('_', ' ').Replace('-', ' ');
#endif
}

static string FromPascalCase(string input)
{
Expand Down Expand Up @@ -160,4 +171,4 @@ internal static unsafe string Concat(char left, CharSpan right) =>
internal static unsafe string Concat(CharSpan left, char right) =>
Concat(left, new CharSpan(&right, 1));
#endif
}
}
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