v1.5.0

Correctness, concurrency, performance, and security release.

⚠️ Behavior changes (read before upgrading)

• Untagged nested structs/pointers are now validated recursively (time.Time/decimal.Decimal still treated as scalars).
• Duplicate errors removed — one error per field.
• FieldError.FuncError is now json:"-".

Highlights

• Fixed a data race + unbounded memory growth in requiredIf.
• Fixed O(2^depth) nested validation + duplicate errors (field-cache bug).
• Guarded cyclic references (depth limit) — no more infinite hang.
• Embedded (anonymous) struct fields are now validated.
• Allocation-free, ~2.5× faster success path.
• ReDoS-safe (RE2) and fuzzed (~6.6M execs, zero crashes).
• New FailFast option; CI hardened (Go matrix, race, lint v2, fuzz); coverage 78%→88%.

Full details in CHANGELOG.md.

v1.4.0

What's New

Locale Validation Rules

• Country codes (ISO 3166-1): country, country.alpha2, country.alpha3, country.numeric
• Currency codes (ISO 4217 + Crypto): currency, currency.fiat, currency.crypto, currency.all
• Language codes (ISO 639): language, language.alpha2, language.alpha3
• Phone validation: phone, phone.e164 (using phonenumbers library)

Cryptocurrency Support

• Added 100+ cryptocurrency codes (BTC, ETH, USDT, SOL, etc.)
• currency.crypto for crypto-only validation
• currency validates both fiat and crypto

Breaking Changes

• Now requires Go 1.23+ (due to phonenumbers library dependency)

Example Usage

type Payment struct {
    Country    string `valid:"required,country.alpha2"`
    Currency   string `valid:"required,currency"`        // fiat or crypto
    FiatOnly   string `valid:"required,currency.fiat"`   // fiat only
    CryptoOnly string `valid:"required,currency.crypto"` // crypto only
    Language   string `valid:"required,language.alpha2"`
    Phone      string `valid:"required,phone.e164"`
}

v1.3 - Code Consolidation & API Improvements

Breaking Changes

• Add generic functions
• Change func name pattern ValidateGte → IsGte

Performance Improvements

• ~14% faster validation (BenchmarkGo119Performance)
• ~44% fewer memory allocations
• ~34% less memory usage
• Fixed Empty() to use IsZero() instead of DeepEqual()

Code Quality

• Consolidated field comparison functions with unified helper
• Added deref() helper to reduce code duplication
• Net code reduction: ~320 lines
• Updated README with better organization

v1.2

add uuid3, uuid4, uuid5, uuid

v1.1

added FieldErrors
fixed TestInnerStruct2

v1.0

Update .travis.yml

added go v.1.12, v1.13, v1.14 testing

v1.0-alpha.3

Add Simple Translation
https://github.com/syssam/go-validator/tree/master/_examples/translation

v1.0-alpha.2

change message placeholder name