fort

Sort, min, and max by a transform function.

example

minimum of some rows

var fort = require('fort');
var rows = [ { x : 5 }, { x : 3 }, { x : 2 }, { x : 9 } ];
 
var r = fort.min(rows, function (row) { return row.x });
console.dir(r);

---

{ x: 2 }

ascending rows

var fort = require('fort');
var rows = [ { x : 5 }, { x : 3 }, { x : 2 }, { x : 9 } ];
 
var res = fort.ascend(rows, function (row) { return row.x });
console.dir(res);

---

[ { x: 2 }, { x: 3 }, { x: 5 }, { x: 9 } ]

ascending modulo sort

var fort = require('fort');
var xs = [ 3, 2, 4, 6, 2, 8, 1, 7 ];
 
var res = fort.rise(xs, function (x) { return x % 4 });
console.dir(res);

---

[ 4, 8, 1, 2, 6, 2, 3, 7 ]

methods

fort.min(xs, f)

Return the minimum value from the elements in xs after transforming by f(x) on each element x in xs.

The return value will be from the original elements in xs, not the transformed set.

fort.max(xs, f)

Return the minimum value from the elements in xs after transforming by f(x) on each element x in xs.

The return value will be from the original elements in xs, not the transformed set.

fort.ascend(xs, f)

Return the elements from xs sorted into ascending order after transforming by f(x) on each x element in xs.

The return array will be comprised of the original elements from xs, not the transformed values from f(x).

If xs is a function or undefined, return a comparison function using xs or the identity as the function transform.

fort.descend(xs, f)

Return the elements from xs sorted into descending order after transforming by f(x) on each x element in xs.

The return array will be comprised of the original elements from xs, not the transformed values from f(x).

If xs is a function or undefined, return a comparison function using xs or the identity as the function transform.

fort.rise(xs, f)

Alias for fort.ascend() that is more consistent with the fort theme of this module.

fort.fall(xs, f)

Alias for fort.descend() that is more consistent with the fort theme of this module.

install

With npm do:

npm install fort

license

MIT