Change Log

v2.6.14 (2025-10-28)

• Optimize time addition and subtraction series methods in traveler.go file to ensure immutability by copying instances to avoid modifying the original instance
• Add Greek localised language support
• Add Finnish localised language support
• Add Myanmar localised language support

v2.6.13 (2025-10-15)

• Use sync.Once in SetLocale method of language.go to ensure language files are loaded only once, and use sync.Map for thread-safe caching
• Add boundary checks for escape character handling in format2layout method of helper.go to prevent panic caused by out-of-bounds access

v2.6.12 (2025-09-16)

• Lower golang environment dependency from 1.21 to 1.18
• Upgrade testify testing framework from v1.10.0 to v1.11.1
• Set isEmpty flag in UnmarshalJSON method of type_carbon.go file to indicate empty values
• Use sync.Map to implement high-performance concurrent caching
• Fix potential race conditions and null pointer dereference issues, improving concurrency safety

v2.6.11 (2025-07-18)

• Change Sleep from struct method to global method
• Refactor Persian calendar and add benchmark test files
• Refactor Chinese Lunar calendar and add benchmark test files
• Refactor Julian/Modified Julian calendar and add benchmark test files
• Add Hebrew calendar support and add unit tests and benchmark test files
• Add overall performance test report file

v2.6.10 (2025-07-07)

• Change Japanese translation file from jp.json to ja.json and rename document from README.jp.md to README.ja.md to comply with the ISO639-1 standard
• Remove deprecated ParseWithLayouts method and replace with ParseByLayouts method
• Remove deprecated ParseWithFormats method and replace with ParseByFormats method
• Remove deprecated CleanTestNow method and replace with ClearTestNow method
• Remove parsing support for timestamp strings from ParseByLayout and ParseByFormat methods, use CreateFromTimestamp, CreateFromTimestampMilli, CreateFromTimestampMicro, CreateFromTimestampNano to parse timestamp strings
• Optimize getAbsValue method in helper.go to replace conditional judgments with bitwise operation
• Optimize the methods related to time freezing in frozen.go, reduce lock contention using atomic operation and optimize memory allocation
• Optimize benchmark test files to cover serial testing, parallel testing and concurrent testing
• Add Korean readme document README.ko.md
• Add Sleep method and related unit tests, benchmark tests, and example file
• Add number constants such as MaxYear, MinYear, MaxMonth, MinMonth, MaxDay, MinDay etc. and replace hard coded with these constants

v2.6.9 (2025-06-28)

• Remove the implementation of the GormDataType interface for gorm

v2.6.8 (2025-06-12)

• Parsing when layouts or formats is empty, returns a error
• Upgrade gorm.io/gorm from 1.21.1 to 1.30.0 in tests
• Upgrade gorm.io/driver/mysql from 1.5.7 to 1.6.0 in tests
• Upgrade gorm.io/driver/postgres from 1.5.7 to 1.6.0 in tests
• Upgrade gorm.io/driver/sqlite from 1.5.7 to 1.6.0 in tests
• Rename DateTimeType to dateTimeType, DateTimeXXXType to dateTimeXXXType in type_builtin.go
• Rename DateType to dateType, DateXXXType to dateXXXType in type_builtin.go
• Rename TimeType to timeType, TimeXXXType to timeXXXType in type_builtin.go
• Simplify readme file and migrate overview and example usage to the official doc website
• Add HelloGitHub badge link

v2.6.7 (2025-05-26)

• String method removes the check for null value carbon
• Rename type_interface.go file to interfaces.go
• Change the second parameter of the Closest/Farthest methods to an optional parameter
• Add ZeroValue/EpochValue methods
• Add DataTyper interface, and enable builtin types to implement the DataTyper interface

v2.6.6 (2025-05-19)

• Fix bug locale file cannot be found on Windows os
• Fix bug lose of values of layout, weekStartsAt, weekendDays and lang when create new Carbon instance
• Fix bug StartOfWeek and EndOfWeek methods change original Carbon instance Unexpectedly
• Add curd integration testing for xorm, currently covering MySQL/Postgres/SQLite
• Add unit testing for the Windows os in ci action

v2.6.5 (2025-05-14)

• Upgrade go version from 1.18 to 1.21
• SetLanguage method of Carbon struct add check for invalid Language struct
• Parse method of Carbon struct add support for Postgres/SQLite time format string
• Parse/ParseByLayout/ParseByFormat methods of Carbon struct change the return value from nil to empty carbon when parsing an empty string
• Carbon struct add IsEmpty method to determine if it is an empty carbon
• Carbon struct add ClearTestNow method to replace CleanTestNow, CleanTestNow will be removed in the future
• Carbon struct add ParseByLayouts method to replace ParseWithLayouts, ParseWithLayouts will be removed in the future
• Carbon struct add ParseByFormats method to replace ParseWithFormats, ParseWithFormats will be removed in the future
• Carbon struct remove GormDataType method and change Value/MarshalJSON methods from pointer receiver to value receiver
• LayoutType[T] struct remove GormDataType method and change Value/MarshalJSON methods from pointer receiver to value receiver
• FormatType[T] struct remove GormDataType method and change Value/MarshalJSON methods from pointer receiver to value receiver
• TimestampType[T] struct remove GormDataType method and change Value/MarshalJSON methods from pointer receiver to value receiver
• SetResources method of Language struct add check invalid resources
• Add curd integration testing for gorm, currently covering MySQL/Postgres/SQLite
• Replace github.com/stretchr/testify/assert with github.com/stretchr/testify/suite for unit testing

v2.6.4 (2025-04-28)

• Fix panic when database field type was nil
• Split database_types.go into type_carbon.go, type_layout.go, type_format.go, type_timestamp.go
• Rename LayoutFactory interface to LayoutTyper and SetLayout method to Layout
• Rename FormatFactory interface to FormatTyper and SetFormat method to Format
• Rename TimestampFactory interface to TimestampTyper and SetPrecision method to Precision
• Add b.ResetTimer() in benchmark test files
• Add Copy method for Language struct
• Add carbon.Timestamp type alias and carbon.NewTimestamp method
• Add carbon.TimestampMilli type alias and carbon.NewTimestampMilli method
• Add carbon.TimestampMicro type alias and carbon.NewTimestampMicro method
• Add carbon.TimestampNano type alias and carbon.NewTimestampNano method
• Add carbon.DateTime type alias and carbon.NewDateTime method
• Add carbon.DateTimeMicro type alias and carbon.NewDateTimeMicro method
• Add carbon.DateTimeMilli type alias and carbon.NewDateTimeMilli method
• Add carbon.DateTimeNano type alias and carbon.NewDateTimeNano method
• Add carbon.Date type alias and carbon.NewDate method
• Add carbon.DateMilli type alias and carbon.NewDateMilli method
• Add carbon.DateMicro type alias and carbon.NewDateMicro method
• Add carbon.DateNano type alias and carbon.NewDateNano method
• Add carbon.Time type alias and carbon.NewTime method
• Add carbon.TimeMilli type alias and carbon.NewTimeMilli method
• Add carbon.TimeMicro type alias and carbon.NewTimeMicro method
• Add carbon.TimeNano type alias and carbon.NewTimeNano method

v2.6.3 (2025-04-21)

• Fix bug with the same results in different countries using IsWeekend and IsWeekday methods.
• Fix bug carbon.Parse("").StdTime() cause a nil pointer panic. #294
• Change errors from private method to public method.
• Change the default start date of the week from Sunday to Monday
• Change the year of MinValue from -9998 to 1
• Change weeksPerLongYear constant to WeeksPerLongYear
• Add benchmark test files xxx_bench_test.go
• Add IsEpoch method to report whether is a unix epoch time(1970-01-01 00:00:00 +0000 UTC).
• Add WeekEndsAt method to get end day of the week.
• Add SetWeekendDays method to set weekend days of the week.
• Add DefaultWeekStartsAt global variable to store weekend days of the week.

v2.6.2 (2025-04-08)

• Remove hour, Minute,second parameter in CreateFromLunar,CreateFromPersian methods
• Change some format symbol definitions involves symbols such as U, V, X,S,T Z,u,v,x,z
• Fix bug of incorrect judgment of IsLeapMonth in lunar calendar
• Fix bug of AtomFormat and AtomLayout return inconsistent value
• Fix bug of RFC3339Format and RFC3339Layout return inconsistent value
• time.Local is not updated when setting global time zone
• Add format symbol o to get time zone offset
• Add TimestampLayout, TimestampMilliLayout, TimestampMicroLayout and TimestampNanoLayout constants
• Add TimestampFormat, TimestampMilliFormat, TimestampMicroFormat and TimestampNanoFormat constants
• Add DateTimeMilli, DateTimeMicro, DateTimeNano field types
• Add DateMilli、DateMicro、DateNano field types
• Add TimeMilli、TimeMicro、TimeNano field types
• Fix missing timezone bug in IsDST method
• Fix missing timezone bug StartOfXXX, EndOfXXX methods
• Fix missing timezone bug when converting other calendars to Gregorian calendar
• time.Local is not updated when setting default timezone
• Add MaxDuration, MinDuration methods

v2.6.1 (2025-03-27)

• Add ParseWithLayouts and ParseWithFormats methods
• Rename formatFactory interface to FormatFactory, layoutFactory interface to LayoutFactory, timestampFactory interface to TimestampFactory, and add type constraints
• Change the return value of the GormDataType method of the LayoutType, FormatType, TimestampType struct to time
• Change DateTime, Date, Time types from struct to string
• Change Timestamp、TimestampMilli、TimestampMicro,TimestampNano types from struct to int64
• Move built-in database field types to new file types.go
• Fixed updated_at field is automatically updated and invalid when gorm updates data

v2.6.0 (2025-03-25)

• golang minimum version dependency upgraded to 1.18
• carbon, julian, lunar, persian changed from value passing to pointer passing
• Add ZoneName method to get the time zone name
• Add HasError method to check if there is an error
• Add IsNil method to check if it is nil
• Add Copy method to deep copy carbon
• Add WeekStartsAt method to get start day of the week
• Add example file xxx_example.go
• Add a new constant.go file and migrate constants from the carbon.go file to this file
• Change default global timezone from Local to UTC
• Rename Offset method to ZoneOffset method
• Rename IsSetTestNow method to IsTestNow method
• Rename UnSetTestNow method to CleanTestNow method
• Remove Location method, replaced by Timezone method
• Change the judgment logic of IsValid and IsInvalid methods, zero time is no longer considered invalid time
• Update time.Local when setting the global default timezone
• Refactor database.go and remove carbon.DateTime, carbon. DateTimeMilli, carbon.DateTimeMicro, carbon.DateTimeNano, carbon. Date, carbon.DateMilli, carbon.DateMicro, carbon.DateNano, carbon.Time, carbon.TimeMilli, carbon.TimeMicro, carbon.TimeNano, carbon.Timestamp, carbon.TimestampMilli, carbon.TimestampMicro, carbon.TimestampNano field types, use generic fields instead to implement custom output format when MarshalJSON/UnmarshalJSON

Refer to releases for change logs of earlier versions