dartbag #

A grab-bag of miscellaneous, lightweight utility code for Dart. Functionality includes (but is not limited to):

byte_data #

List<int>.asUint8List converts a List<int> to a Uint8List without copying, if possible.

assertsEnabled returns whether assert is enabled.
currentDartPackagePath returns the path to the current Dart library for Dart VM builds.
staticType returns the static type of an object.

List.reverse reverses a List in place.
List.rotateLeft rotates a List in place.
List.sortWithKey sorts a List by computing and caching sort keys, which can be significantly faster if comparisons are expensive.

chainIf allows conditional method chaining based on a condition.
tryAs casts an object and returns null on failure instead of throwing a TypeError.
OutputParameter allows specifying output parameters from functions as a crude mechanism to return multiple values.
int.padDigits converts an int to a String, left-padded with zeroes to have a minimum number of digits.
int.multipleOf rounds a non-negative integer to the nearest multiple of another number.
Uri.updateQueryParameters adds or replaces query parameters in a Uri.
Rectangle.center returns the center of a Rectangle.
bool.implies returns whether one bool logically implies another.

tryParseBool parses a bool from a String?.
tryParseInt and tryParseDouble are wrappers around int.tryParse and double.tryParse that accept null arguments.
List<Enum>.tryParse parses an Enum value from a String?.

randMaxInt returns the maximum value allowed by Random.nextInt portably.
Random.nextIntFrom returns a random integer in a specified range.
lazyShuffler shuffles a List lazily.
RepeatableRandom wraps an existing pseudo-random number generator and allows a random sequence to be easily restarted and that allows the seed to be retrieved.

readableDuration returns a Duration as a human-readable string.
readableNumber returns a number as a human-readable string with SI prefixes and units.

RestartableTimer is a non-periodic Timer that can be easily restarted.
ExpiringPeriodicTimer is a periodic Timer that automatically stops after a time limit.

getTerminalSize attempts to get the number of columns and lines of a terminal.
wordWrap wraps a string to a maximum line length.