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sortedmap 0.4.2

Published Aug 14, 2018
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  • Readme
  • Changelog
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  • 69

Contains a SortedMap and FilteredMap class, which hold a map of objects that can be ordered relative to each other.

Unlike SplayTreeMap the objects can be ordered on both key and value or a combination of both.

The FilteredMap also allows to specify an isValid function on key/value pairs and limit the number of objects allowed in the map.

SortedMap #

A simple usage example:

import 'package:sortedmap/sortedmap.dart';

main() {
  var map = new SortedMap((Pair a, Pair b)=>Comparable.compare(a.value, b.value));
  
  map.addAll({
    "a": 3,
    "b": 2,
    "c": 4,
    "d": 1
  });
  
  print(map.lastKeyBefore("c")); // a
  print(map.firstKeyAfter("d")); // b
  
}

FilteredMap #

A simple usage example:

import 'package:sortedmap/sortedmap.dart';

main() {
  var map = new FilteredMap(new Filter(
    compare: (Pair a, Pair b)=>Comparable.compare(a.value, b.value),
    isValid: (Pair v) => v.key!="b",
    limit: 2));
  
  map.addAll({
    "a": 3,
    "b": 2,
    "c": 4,
    "d": 1
  });
  
  print(map.keys); // (d, a)
  
}

Features and bugs #

Please file feature requests and bugs at the issue tracker.

Changelog #

0.4.2 #

  • Support Dart 2 in pubspec.yaml

0.4.1 #

  • fixes on Dart 2 compatibility

0.4.0 #

  • Dart 2 pre-release compatibility

0.3.1 #

  • performance improvements

0.3.0 #

  • resolve strong mode analysis warnings
  • change dependency on quiver to <0.28.0

0.2.0 #

  • new FilteredMapView class
  • some api changes

0.1.2 #

  • keep elements after limit in FilteredMap

0.1.1 #

  • compare and isValid methods iso getters in Filter
  • strong mode fixes
  • linter

0.1.0 #

  • Initial version

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  sortedmap: ^0.4.2

2. Install it

You can install packages from the command line:

with pub:


$ pub get

with Flutter:


$ flutter pub get

Alternatively, your editor might support pub get or flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use: 


import 'package:sortedmap/sortedmap.dart';
Popularity:
Describes how popular the package is relative to other packages. [more]
80
Health:
Code health derived from static analysis. [more]
59
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
58
Overall:
Weighted score of the above. [more]
69
Learn more about scoring.

We analyzed this package on Dec 9, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.6.1
  • pana: 0.13.1+4

Health suggestions

Fix lib/src/treeset.dart. (-19.79 points)

Analysis of lib/src/treeset.dart reported 44 hints, including:

line 11 col 12: Unnecessary new keyword.

line 19 col 21: Use = to separate a named parameter from its default value.

line 19 col 44: Use = to separate a named parameter from its default value.

line 30 col 25: Unnecessary new keyword.

line 45 col 15: Unnecessary new keyword.

Fix lib/src/sortedmap.dart. (-12.22 points)

Analysis of lib/src/sortedmap.dart reported 26 hints, including:

line 10 col 7: Unnecessary new keyword.

line 15 col 12: Unnecessary new keyword.

line 32 col 24: Use = to separate a named parameter from its default value.

line 33 col 27: Unnecessary new keyword.

line 54 col 27: Unnecessary new keyword.

Fix lib/src/filteredmap.dart. (-7.24 points)

Analysis of lib/src/filteredmap.dart reported 15 hints, including:

line 12 col 7: Unnecessary new keyword.

line 12 col 36: Unnecessary new keyword.

line 23 col 7: DO use curly braces for all flow control structures.

line 27 col 14: Unnecessary new keyword.

line 30 col 14: Unnecessary new keyword.

Fix additional 5 files with analysis or formatting issues. (-9.38 points)

Additional issues in the following files:

  • lib/src/filter.dart (8 hints)
  • lib/src/treemap.dart (7 hints)
  • lib/src/ordering.dart (2 hints)
  • lib/src/pair.dart (2 hints)
  • lib/sortedmap.dart (Run dartfmt to format lib/sortedmap.dart.)

Maintenance suggestions

Package is getting outdated. (-32.05 points)

The package was last published 68 weeks ago.

Maintain an example. (-10 points)

Create a short demo in the example/ directory to show how to use this package.

Common filename patterns include main.dart, example.dart, and sortedmap.dart. Packages with multiple examples should provide example/README.md.

For more information see the pub package layout conventions.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.14.0 <3.0.0
quiver >=0.22.0 <3.0.0 2.1.2+1
Transitive dependencies
matcher 0.12.6
meta 1.1.8
path 1.6.4
stack_trace 1.9.3
Dev dependencies
benchmark_harness ^1.0.4
test >=0.12.0 <2.0.0