Helpers class

Static Methods

chunk<T>(List<T> list, int size) → List<List<T>>

Chunks a list into smaller lists of specified size

clamp<T extends Comparable<T>>(T value, T min, T max) → T

Clamps a value between min and max

delay(Duration duration) → Future<void>

Delays execution by the specified duration

delayMs(int milliseconds) → Future<void>

Delays execution by milliseconds

equals<T>(T? a, T? b) → bool

Checks if two values are equal (handles null)

ifNotNull<T>(T? value, void action(T)) → void

Executes a function if value is not null

ifTrue<T>(bool condition, T value()) → T?

Returns a value if condition is true, otherwise returns null

invertMap<K, V>(Map<K, V> map) → Map<V, K>

Inverts a map (swaps keys and values)

isBlank(String? value) → bool

Checks if a string is blank (empty or only whitespace)

isNotBlank(String? value) → bool

Checks if a string is not blank

orElse<T>(T? value, T defaultValue) → T

Returns the value if not null, otherwise returns default

parallel<T>(List<Future<T>> futures) → Future<List<T>>

Executes multiple futures in parallel and returns results

randomDouble(double min, double max) → double

Generates a random double between min and max

randomInt(int min, int max) → int

Generates a random integer between min and max (inclusive)

randomString(int length, {String chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'}) → String

Generates a random string of specified length

retry<T>(Future<T> action(), {int maxAttempts = 3, Duration delay = const Duration(seconds: 1), bool onError(Object)?}) → Future<T>

Retries a function with exponential backoff

safeCast<T>(dynamic value) → T?

Safely casts a value to a type, returns null if cast fails

sequential<T>(List<Future<T> Function()> futures) → Future<List<T>>

Executes futures sequentially

shuffle<T>(List<T> list) → List<T>

Shuffles a list and returns a new list

uuid() → String

Generates a random UUID-like string