ValidateStruct use tags for fields. result will be equal to `false` if there are any errors. todo currently there is no guarantee that errors will be

IsNull checks if the string is null.

IsHash checks if a string is a hash of type algorithm. Algorithm is one of ['md4', 'md5', 'sha1', 'sha256', 'sha384', 'sha512', 'ripemd128', 'ripemd16

ToInt convert the input string or any int type to an integer type 64, or 0 if the input is not an integer.

SetFieldsRequiredByDefault causes validation to fail when struct fields do not include validations or are not explicitly marked as exempt (using `vali

ToFloat convert the input string to a float, or 0.0 if the input is not a float.

InRange returns true if value lies between left and right border, generic type to handle int, float32, float64 and string. All types must the same typ

InRangeFloat64 returns true if value lies between left and right border

InRangeInt returns true if value lies between left and right border

IsIP checks if a string is either IP version 4 or 6. Alias for `net.ParseIP`

IsPositive returns true if value > 0

IsWhole returns true if value is whole number

Matches checks if string matches the pattern (pattern is regular expression) In case of error return false

ReplacePattern replaces regular expression pattern in string

Abs returns absolute value of number

Contains checks if the string contains the substring.

Count iterates over the slice and apply ConditionIterator to every item. Returns count of items that meets ConditionIterator.

Each iterates over the slice and apply Iterator to every item

Errors returns itself.

Filter iterates over the slice and apply ConditionIterator to every item. Returns new slice.

Find iterates over the slice and apply ConditionIterator to every item. Returns first item that meet ConditionIterator or nil otherwise.

InRangeFloat32 returns true if value lies between left and right border

IsDNSName will validate the given string as a DNS name

IsISBN checks if the string is an ISBN (version 10 or 13). If version value is not equal to 10 or 13, it will be checks both variants.

IsNatural returns true if value is natural number (positive and whole)

IsNegative returns true if value < 0

IsNonNegative returns true if value >= 0

IsNonPositive returns true if value <= 0

IsTime checks if string is valid according to given format

Map iterates over the slice and apply ResultIterator to every item. Returns new slice as a result.

Sign returns signum of number: 1 in case of value > 0, -1 in case of value < 0, 0 otherwise

ToBoolean convert the input string to a boolean.

ToJSON convert the input to a valid JSON string

ToString convert the input to a string.

Trim trims characters from both sides of the input. If second argument is empty, it will remove spaces.

PadString either left, right or both sides. Note that padding string can be unicode and more then one character

BlackList removes characters that appear in the blacklist.

ErrorByField returns error for specified field of the struct validated by ValidateStruct or empty string if there are no errors or this field doesn't

ErrorsByField returns map of errors of the struct validated by ValidateStruct or empty map if there are no errors.

GetLines splits string by "\n" and return array of lines

IsBase64 checks if a string is base64 encoded.

IsDivisibleBy checks if the string is a number that's divisible by another. If second argument is not valid integer or zero, it's return false. Otherw

IsEmail checks if the string is an email.

IsIn checks if string str is a member of the set of strings params

IsInt checks if the string is an integer. Empty string is valid.

IsPort checks if a string represents a valid port

IsRsaPublicKey checks if a string is valid public key with provided length

LeftTrim trims characters from the left side of the input. If second argument is empty, it will remove leading spaces.

RightTrim trims characters from the right side of the input. If second argument is empty, it will remove trailing spaces.

StringLength checks string's length (including multi byte strings)

WhiteList removes characters that do not appear in the whitelist.

parseTagIntoMap parses a struct tag `valid:required~Some error message,length(2|3)` into map[string]string{"required": "Some error message", "length(2

ByteLength checks string's length

CamelCaseToUnderscore converts from camel case form to underscore separated form. Ex.: MyFunc => my_func

Error returns string equivalent for reflect.Type

Every validates that every item of array corresponds to ConditionIterator. Returns boolean.

GetLine returns specified line of multiline string

HasLowerCase checks if the string contains at least 1 lowercase. Empty string is valid.

HasUpperCase checks if the string contains as least 1 uppercase. Empty string is valid.

HasWhitespace checks if the string contains any whitespace

HasWhitespaceOnly checks the string only contains whitespace

IsASCII checks if the string contains ASCII chars only. Empty string is valid.

IsAlpha checks if the string contains only letters (a-zA-Z). Empty string is valid.

IsAlphanumeric checks if the string contains only letters and numbers. Empty string is valid.

IsByteLength checks if the string's length (in bytes) falls in a range.

IsCIDR checks if the string is an valid CIDR notiation (IPV4 & IPV6)

IsCreditCard checks if the string is a credit card.

IsDataURI checks if a string is base64 encoded data URI such as an image

IsDialString validates the given string for usage with the various Dial() functions

IsExistingEmail checks if the string is an email of existing domain

IsFilePath checks is a string is Win or Unix file path and returns it's type.

IsFloat checks if the string is a float.

IsFullWidth checks if the string contains any full-width chars. Empty string is valid.

IsHalfWidth checks if the string contains any half-width chars. Empty string is valid.

IsHexadecimal checks if the string is a hexadecimal number.

IsHexcolor checks if the string is a hexadecimal color.

IsHost checks if the string is a valid IP (both v4 and v6) or a valid DNS name

IsIMEI checks if a string is valid IMEI

IsIMSI checks if a string is valid IMSI

IsIPv4 checks if the string is an IP version 4.

IsIPv6 checks if the string is an IP version 6.

IsISBN10 checks if the string is an ISBN version 10.

IsISBN13 checks if the string is an ISBN version 13.

IsISO3166Alpha2 checks if a string is valid two-letter country code

IsISO3166Alpha3 checks if a string is valid three-letter country code

IsISO4217 checks if string is valid ISO currency code

IsISO693Alpha2 checks if a string is valid two-letter language code

IsISO693Alpha3b checks if a string is valid three-letter language code

IsJSON checks if the string is valid JSON (note: uses json.Unmarshal).

IsLatitude checks if a string is valid latitude.

IsLongitude checks if a string is valid longitude.

IsLowerCase checks if the string is lowercase. Empty string is valid.