gmana
library
Extensions
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BoolNullableX
on bool?
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Extensions for nullable bool values providing safe defaults.
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DoubleNullableX
on double?
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Extensions for nullable double values providing safe defaults.
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DurationNaturalLanguageX
on Duration
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Alternative duration formatting for human-readable UI copy.
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HumanizedDuration
on Duration
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Formatting, arithmetic, and utility methods for Duration.
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IntNullableX
on int?
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Extensions for nullable int values providing safe defaults.
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IntX
on int
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Core extensions on int adding parity checks, digits access, and iterative utilities.
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IterableNullableX
on Iterable<T?>
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Extension on Iterable providing utilities for filtering and transforming nullable elements safely.
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IterableNumX
on Iterable<T>
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Comprehensive extensions on Iterable for numeric types.
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IterableOfIterablesX
on Iterable<Iterable<E>>
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Extension on Iterable of Iterables providing methods to flatten nested collections.
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IterableX
on Iterable<T>
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General utility extension on Iterable providing flat-mapping, grouping, and chunking capabilities.
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NumDurationExtension
on num
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Creates Duration values from numbers, such as
5.seconds.
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NumNullableX
on num?
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Extensions for nullable num values providing safe defaults.
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NumX
on num
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Shared mathematical, formatting, and conversion extensions on num (covering both int and double).
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StreamListX
on Stream<List<T>>
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Extension providing collection-oriented functional operations for Streams emitting Lists.
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StreamX
on Stream<T>
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General-purpose utility extension on Stream providing enhanced filtering,
timing controls (like debounce/throttle), error handling, and scanning operators.
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StringDateExtension
on String
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Date validation and comparison utilities for date strings.
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StringNullableX
on String?
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Extension on nullable String providing safe fallback and mapping methods.
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StringValidation
on String
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A vast collection of validation utilities mapped as getters on String.
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StringX
on String
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Main extension on String providing comprehensive conversion and formatting tools.
Functions
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contains(String str, String seed)
→ bool
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Returns
true if str contains seed.
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containsIgnoreCase(String str, String seed)
→ bool
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Returns
true if str contains seed, ignoring case.
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equals(String? str, String comparison)
→ bool
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Returns
true if str equals comparison.
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isAfter(String str, [String? reference])
→ bool
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Returns
true if str represents a date after reference.
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isAlpha(String str)
→ bool
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Returns
true if str contains only ASCII alphabetic characters (a–z, A–Z).
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isAlphaNumeric(String str)
→ bool
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Returns
true if str contains only ASCII alphanumeric characters (a–z, A–Z, 0–9).
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isAscii(String str)
→ bool
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Returns
true if str contains only printable ASCII characters (U+0000–U+007F).
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isBase64(String str)
→ bool
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Returns
true if str is a valid Base64-encoded string.
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isBefore(String str, [String? reference])
→ bool
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Returns
true if str represents a date before reference.
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isBetween(String str, String from, String to)
→ bool
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Returns
true if str represents a date strictly between from and to.
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isByteLength(String str, int min, [int? max])
→ bool
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Returns
true if str byte-length is within `min`, `max`.
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isCreditCard(String str)
→ bool
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Returns
true if str is a valid credit card number (Luhn check).
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isDate(String str)
→ bool
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Returns
true if str is a parseable date string.
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isDivisibleBy(String str, String n)
→ bool
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Returns
true if the numeric value of str is divisible by n.
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isEmail(String str)
→ bool
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Returns
true if str matches the RFC 5322 email format heuristic.
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isFloat(String str)
→ bool
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Returns
true if str represents a floating-point number.
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isFQDN(String str, {bool requireTld = true, bool allowUnderscores = false})
→ bool
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Returns
true if str is a valid fully-qualified domain name.
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isFullWidth(String str)
→ bool
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Returns
true if str contains full-width Unicode characters.
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isFuture(String str)
→ bool
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Returns
true if str represents a date in the future.
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isHalfWidth(String str)
→ bool
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Returns
true if str contains half-width Unicode characters.
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isHexadecimal(String str)
→ bool
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Returns
true if str is a valid hexadecimal string.
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isHexColor(String str)
→ bool
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Returns
true if str is a valid hex color (e.g. #FFF or #FFFFFF).
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isInt(String str)
→ bool
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Returns
true if str represents an integer.
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isIpv4(String str)
→ bool
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Returns
true if str is a valid IPv4 address.
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isIpv6(String str)
→ bool
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Returns
true if str is a valid IPv6 address.
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isISBN(String? str, [String? version])
→ bool
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Returns
true if str is a valid ISBN-10 or ISBN-13.
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isJson(String str)
→ bool
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Returns
true if str is valid JSON.
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isLeapYear(String str)
→ bool
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Returns
true if str represents a date in a leap year.
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isLength(String str, int min, [int? max])
→ bool
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Returns
true if the display-length of str is within `min`, `max`,
counting surrogate pairs as single characters.
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isLowerCase(String str)
→ bool
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Returns
true if str is entirely lowercase (or has no cased characters).
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isMongoId(String str)
→ bool
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Returns
true if str is a valid 24-character MongoDB ObjectId (hex).
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isMultiByte(String str)
→ bool
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Returns
true if str contains multi-byte (non-ASCII) characters.
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isNull(String? str)
→ bool
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Returns
true if str is null or empty.
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isNullOrEmpty(String? str)
→ bool
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Returns
true if str is null or empty.
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isNumeric(String str)
→ bool
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Returns
true if str contains only numeric digits (optionally negative).
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isPast(String str)
→ bool
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Returns
true if str represents a date in the past.
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isPostalCode(String? text, String locale, {bool orElse()?})
→ bool
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Returns
true if text is a valid postal code for locale.
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isSurrogatePair(String str)
→ bool
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Returns
true if str contains surrogate pairs.
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isToday(String str)
→ bool
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Returns
true if str represents today's UTC date.
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isUpperCase(String str)
→ bool
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Returns
true if str is entirely uppercase (or has no cased characters).
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isUuid(String? str, [String? version])
→ bool
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Returns
true if str is a valid UUID (any version by default).
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isVariableWidth(String str)
→ bool
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Returns
true if str contains both full-width and half-width characters.
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isWeekday(String str)
→ bool
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Returns
true if str represents a Monday–Friday.
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isWeekend(String str)
→ bool
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Returns
true if str represents a Saturday or Sunday.
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matches(String str, String pattern)
→ bool
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Returns
true if str matches the regex pattern.
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resolveEmailValidationIssue(EmailValidationIssue issue)
→ String
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Default English messages for email validation issues.
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resolveNumberValidationIssue(NumberValidationIssue issue)
→ String
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Default English messages for number validation issues.
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resolvePasswordValidationIssue(PasswordValidationIssue issue)
→ String
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Default English messages for password validation issues.
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resolveTextValidationIssue(TextValidationIssue issue)
→ String
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Default English messages for text validation issues.
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tryParseDate(String str)
→ DateTime?
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Parses
str as a UTC DateTime, returning null on failure.
