Avoid redundant guard checks when validating dates - #15936
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josevalim merged 1 commit intoSep 24, 2026
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Call days_in_month_guarded/2 directly in Calendar.ISO.valid_date?/3 to skip redundant month and year guard checks and avoid intermediate call dispatch. Assisted-by: Antigravity:Gemini-Flash
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Assisted-by: Antigravity:Gemini-Flash
Avoid redundant guard checks when validating dates.
I haven't included benchmark because it's a small improvement close to noise but it avoids work so the gain is real but minimal.