katana library

This package contains utility classes such as the Masamune package.

To use, import package:katana/katana.dart.

Classes

Api

Provides static methods for making HTTP requests.

Const

Class that defines a constant value.

DateDuration

A class that represents a date period.

DateFormat

DateFormat is for formatting and parsing dates in a locale-sensitive manner.

Immutable

Used to annotate a class.

MetaConst

Class that defines a constant value for metadata.

Required

Used to annotate a named parameter p in a method or function f.

Extensions

DateTimeExtensions on DateTime

Provides extended methods for DateTime.

DateTimeIterableExtensions on Iterable<DateTime>

Provides extended methods for DateTime arrays.

DoubleExtensions on double

Provides extended methods for double.

DoubleIterableExtensions on Iterable<double>

Provides extended methods for double arrays.

DurationExtensions on Duration

Provides extended methods for Duration.

DynamicMapExtensions on Map<String, dynamic>

Provides extended methods for DynamicMap.

InterableOfIterableExtensions on Iterable<Iterable<T>>

Provides extended methods for Iterable arrays.

IntExtensions on int

Provides extended methods for int.

IntIterableExtensions on Iterable<int>

Provides extended methods for int arrays.

IterableExtensions on Iterable<T>

Provides extended methods for T arrays.

JsonDynamicListExtensions on DynamicList

Provides Json extension methods for DynamicList.

JsonDynamicMapExtensions on DynamicMap

Provides Json extension methods for DynamicMap.

ListExtensions on List<T>

Provides extended methods for List in T.

MapExtensions on Map<K, V>

Provides extended methods for Map.

NullableDoubleExtensions on double?

Provides an extension method for double that is nullable.

NullableIntExtensions on int?

Provides an extension method for int that is nullable.

NullableIterableExtensions on Iterable<T>?

Provides an extension method for Iterable that is nullable.

NullableListExtensions on List<T>?

Provides an extension method for List that is nullable.

NullableMapExtensions on Map<K, V>?

Provides an extension method for Map that is nullable.

NullableNumExtensions on num?

Provides an extension method for num that is nullable.

NullableObjectExtensions on Object?

Provides an extension method for List that is nullable.

NullableSetExtensions on Set<T>?

Provides an extension method for Set that is nullable.

NullableStringExtensions on String?

Provides an extension method for String that is nullable.

NullableValueIterableExtensions on Iterable<T?>

Provides an extension method for Iterable whose value is nullable.

RandomExtensions on Random

Provides extended methods for Random.

SetExtensions on Set<T>

Provides extended methods for Set.

StringExtensions on String

Provides extended methods for String.

Constants

nullOfBool → const bool?

A null object with a defined type of bool?

nullOfDouble → const double?

A null object with a defined type of double?

nullOfDynamicList → const DynamicList?

A null object with a defined type of DynamicList?

nullOfDynamicMap → const DynamicMap?

A null object with a defined type of DynamicMap?

nullOfInt → const int?

A null object with a defined type of int?

nullOfNum → const num?

A null object with a defined type of num?

nullOfString → const String?

A null object with a defined type of String?

zeroOfNum → const num

A 0 object with a defined type of num?

Properties

sprintf ↔ PrintFormat

getter/setter pair

uuid → String

Generate and retrieve the UUID for Version 4.

no setter

Functions

generateCode(int length, {int seed = 0, String charSet = "23456789abcdefghjkmnpqrstuvwxy"}) → String

Generates and returns a random string with the number of characters given by length.

initializeDateFormatting([String? locale, String? ignored]) → Future<void>

This should be called for at least one locale before any date formatting methods are called. It sets up the lookup for date symbols. Both the locale and ignored parameter are ignored, as the data for all locales is directly available.

jsonDecodeAsList<T extends Object?>(String json, [List<T> defaultValue = const []]) → List<T>

Converts json to a Json-decoded List

jsonDecodeAsMap<T extends Object?>(String json, [Map<String, T> defaultValue = const {}]) → Map<String, T>

Converts json to a Json-decoded Map<String, dynamic> object.

jsonEncodable(Object? o) → bool

If this object is Json encodable, true is returned.

nullOfList<T>() → List<T>?

A null object with a defined type of List<T>?

nullOfMap<K, V>() → Map<K, V>?

A null object with a defined type of Map<K, V>?

nullOfSet<T>() → Set<T>?

A null object with a defined type of Set<T>?

wait(Iterable futures) → Future<void>

Wait until all Futures given in futures are completed.

Typedefs

ApiResponse = Response

An HTTP response where the entire response body is known in advance.

ApiResquest = Request

An HTTP request where the entire request body is known in advance.

DynamicList = List

Represents the type of List<dynamic>.

DynamicMap = Map<String, dynamic>

Represents the type of Map<String, dynamic>.