trampoline 1.0.0
welopment.comtrampoline #
A library for trampolining recursive calls.
Example 1: #
import 'package:trampoline/trampoline.dart';
TailRec<int> fib(int n) {
if (n < 2) {
return done(n);
} else {
return tailcall(() => fib(n - 1)).flatMap((x) {
return tailcall(() => fib(n - 2)).map((y) {
return (x + y);
});
});
}
}
void main() {
int z = 10;
print("fib(${z}) is ${fib(z).result}!");
}
Example 2: #
import 'package:trampoline/trampoline.dart';
TailRec<bool> odd(int n) => n == 0 ? done(false) : tailcall(() => even(n - 1));
TailRec<bool> even(int n) => n == 0 ? done(true) : tailcall(() => odd(n - 1));
void main() {
int z = 1000;
print("${z} is odd? ${odd(z).result}!");
}
Changelog #
1.0.0 #
- rewritten in object-orientated style
0.1.3 #
- replaced recursion with iteration
0.1.2 #
- published on github.com
0.1.1 #
- improved documentation
import 'package:trampoline/trampoline.dart';
// Example 1
TailRec<int> fib(int n) {
if (n < 2) {
return done(n);
} else {
return tailcall(() => fib(n - 1)).flatMap((x) {
return tailcall(() => fib(n - 2)).map((y) {
return (x + y);
});
});
}
}
// Example 2
TailRec<bool> odd(int n) => n == 0 ? done(false) : tailcall(() => even(n - 1));
TailRec<bool> even(int n) => n == 0 ? done(true) : tailcall(() => odd(n - 1));
void main() {
bool res1;
res1 = even(101).result;
print("Ergebnis von Odd/Even ist $res1");
for (int z = 20; z < 35; z++) {
num res2;
res2 = fib(z).result;
print("Ergebnis von Fibonacci für $z ist $res2");
}
}
Use this package as a library
1. Depend on it
Add this to your package's pubspec.yaml file:
dependencies:
trampoline: ^1.0.0
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:trampoline/trampoline.dart';
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Popularity:
Describes how popular the package is relative to other packages.
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16
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Health:
Code health derived from static analysis.
[more]
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99
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Maintenance:
Reflects how tidy and up-to-date the package is.
[more]
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100
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Overall:
Weighted score of the above.
[more]
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58
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Learn more about scoring.
We analyzed this package on Jan 19, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:
- Dart: 2.7.0
- pana: 0.13.4
Health issues and suggestions
Document public APIs. (-1 points)
14 out of 14 API elements have no dartdoc comment.Providing good documentation for libraries, classes, functions, and other API elements improves code readability and helps developers find and use your API.