speed_up

Package to speed up your productivity.

Usage

Object

someObj.isNull;
someObj.isNotNull;

String extensions

Check String is null or empty

'Some String'.isNullOrEmpty
'Some String'.isNotNullOrEmpty

Capitalization

'flutter'.capitalized; // 'Flutter'

'flutter is awesome'.titleCased; // 'Flutter Is Awesome'

Equality

str1.isEqualTo(str2);
str1.isEqualTo(str2, ignoreCase: true);

Collection extension

 final sum = [1, 2, 3].sum(); // 6

 final sum = [Product(price: 100.99), Product(price: 49.99)].sum((p) => p.price);

final ordered = orders.orderBy((x) => x.amount, desc: true);

final groups = people.groupBy((p) => p.age, map: (p) => p.name);

mapWithIndex

const arr = [1, 2, 3];
final arr2 =
    arr.mapWithIndex((index, item, isFirst, isLast) => '$index - $item');
print(arr2); // ['0 - 1', '1- 2', '2 -3']

Next After

Random

replaceWhere

// Given array
const arr = [1, 2, 3];

// replace by index
final newArray = arr.replaceWhere((index, _) => index == 1, withNewItem: 13);
newArray.should.be([1, 13 ,3]);

// or replace by prop
final newArray = arr.replaceWhere((_, number) => number.isOdd, withNewItem: 13);
newArray.should.be([ 13, 2, 13]);

Reorder list

const list = [1, 2, 3, 4, 5];

list.reorderByIndexes(oldIndex: 1, newIndex: 0);  // [2, 1, 3, 4, 5]
list.reorder(5, newIndex: 0).toList();          // [5, 1, 2, 3, 4]

split_on_pages_by_count

test('split_on_pages_by_count - full pages', () {
  final pages = arr.splitOnPagesBy(2).toList();
  pages.length.should.be(5);
  for (final page in pages) {
    page.length.should.be(2);
  }
});

intersperse

Puts element between every element in list.

Example:

final list1 = intersperse(2, <int>[]); // [];
final list2 = intersperse(2, [0]); // [0];
final list3 = intersperse(2, [0, 0]); // [0, 2, 0];

Get image file size

const fileSize = 1024 * 1024;

// Get file size in closest size suffix
final sizeInMb = FileSizeInfo.getSize(bytes);
log(sizeInKb.getTitle())); // prints '1.oo MB'
log(sizeInKb.getTitle(decimals: 0))); // prints '1 MB'

// Convert to desired suffix
final sizeInKb = sizeInMb.asSuffix(FileSizeSuffix.KB);
log(sizeInKb.getTitle())); // prints '1024 KB'

log();

RangeValue type

final numRange = RangeValue(1, 10);
print(numRange.isValid); // true

final start = DateTime.now();
final end = DateTime.now().add(Duration(days: 1));
final dateTimeRange = RangeValue(end, start);

print(dateTimeRange.isValid); // false

Debouncer

Declare it

final debounce = Debounce(delay: const Duration(milliseconds: 100));

and trigger it

onTextChange(String text) {
  _debounce(() => print(text));
}

Contributing

We accept the following contributions:

• Improving documentation
• Reporting issues
• Fixing bugs

Maintainers

• Andrew Piterov