Modern Chrono LocalDate IsValid

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LocalDate.IsValid

Returns true if the date exists and is in range.

Syntax

LocalDate.IsValid

Examples

#import "std/chrono"
using chrono

print LocalDate( 2026, 8, 13 ).IsValid      '' true
print LocalDate( 2025, 2, 30 ).IsValid      '' false -- no such date
print LocalDate( 2024, 2, 29 ).IsValid      '' true -- 2024 is a leap year

'' The only correct test: an Invalid value never compares equal to
'' anything, itself included

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Library: Chrono Date and Time
Category: Date and Time (Chrono)
Documented under: The Members