@thi.ng/transducers - npm Package Compare versions

Comparing version 1.0.7 to 1.1.0

CHANGELOG.md

@@ -6,2 +6,13 @@ # Change Log
 
+<a name="1.1.0"></a>
+# [1.1.0](https://github.com/thi-ng/umbrella/compare/@thi.ng/transducers@[e-mail]/transducers@1.1.0) (2018-02-08)
+
+
+### Features
+
+* **transducers:** add page() xform, update readme ([855d803](https://github.com/thi-ng/umbrella/commit/855d803))
+
+
+
+
 <a name="1.0.7"></a>
@@ -8,0 +19,0 @@ ## [1.0.7](https://github.com/thi-ng/umbrella/compare/@thi.ng/transducers@[e-mail]/transducers@1.0.7) (2018-02-02)

func/binary-search.js

@@ -17,5 +17,7 @@ "use strict";
     const kx = key(x);
-    let low = 0, high = arr.length - 1;
+    let low = 0;
+    let high = arr.length - 1;
     while (low <= high) {
-        const mid = (low + high) >>> 1, c = cmp(key(arr[mid]), kx);
+        const mid = (low + high) >>> 1;
+        const c = cmp(key(arr[mid]), kx);
         if (c < 0) {
@@ -22,0 +24,0 @@ low = mid + 1;

func/even.d.ts

@@ -1,1 +0,1 @@
-export declare function even(x: number): boolean;
+export { isEven as even } from "@thi.ng/checks/is-even";

func/even.js

 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-function even(x) {
-    return (x % 2) === 0;
-}
-exports.even = even;
+var is_even_1 = require("@thi.ng/checks/is-even");
+exports.even = is_even_1.isEven;

func/odd.d.ts

@@ -1,1 +0,1 @@
-export declare function odd(x: number): boolean;
+export { isOdd as odd } from "@thi.ng/checks/is-odd";

func/odd.js

 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-function odd(x) {
-    return (x % 2) === 1;
-}
-exports.odd = odd;
+var is_odd_1 = require("@thi.ng/checks/is-odd");
+exports.odd = is_odd_1.isOdd;

func/shuffle.js

@@ -7,3 +7,5 @@ "use strict";
     while (--n >= 0) {
-        const a = (Math.random() * l) | 0, b = (Math.random() * l) | 0, t = buf[a];
+        const a = (Math.random() * l) | 0;
+        const b = (Math.random() * l) | 0;
+        const t = buf[a];
         buf[a] = buf[b];
@@ -10,0 +12,0 @@ buf[b] = t;

func/weighted-random.js

@@ -15,3 +15,4 @@ "use strict";
 function weightedRandom(choices, weights) {
-    const n = choices.length, opts = [...tuples_1.tuples(choices, weights || repeat_1.repeat(1))].sort((a, b) => b[1] - a[1]);
+    const n = choices.length;
+    const opts = [...tuples_1.tuples(choices, weights || repeat_1.repeat(1))].sort((a, b) => b[1] - a[1]);
     let total = 0, i, r, sum;
@@ -18,0 +19,0 @@ for (i = 0; i < n; i++) {

index.d.ts

@@ -60,2 +60,3 @@ export * from "./api";
 export * from "./xform/pad-last";
+export * from "./xform/page";
 export * from "./xform/partition-by";
@@ -62,0 +63,0 @@ export * from "./xform/partition-of";

index.js

@@ -65,2 +65,3 @@ "use strict";
 __export(require("./xform/pad-last"));
+__export(require("./xform/page"));
 __export(require("./xform/partition-by"));
@@ -67,0 +68,0 @@ __export(require("./xform/partition-of"));

package.json

 {
     "name": "@thi.ng/transducers",
-    "version": "1.0.7",
+    "version": "1.1.0",
     "description": "Lightweight transducer implementations for ES6 / TypeScript",
@@ -29,3 +29,3 @@ "main": "./index.js",
     "dependencies": {
-        "@thi.ng/api": "^2.0.1"
+        "@thi.ng/api": "^2.0.2"
     },
@@ -32,0 +32,0 @@ "keywords": [

README.md

@@ -131,2 +131,23 @@ # @thi.ng/transducers
 
+### Pagination
+
+```typescript
+// extract only items for given page id & page length
+[...tx.iterator(tx.page(0, 5), tx.range(12))]
+// [ 0, 1, 2, 3, 4 ]
+
+// when composing with other transducers
+// it's most efficient to place `page()` early on in the chain
+// that way only the page items will be further processed
+[...tx.iterator(tx.comp(tx.page(1, 5), tx.map(x => x * 10)), tx.range(12))]
+// [ 50, 60, 70, 80, 90 ]
+
+// use `padLast()` to fill up missing values
+[...tx.iterator(tx.comp(tx.page(2, 5), tx.padLast(5, "n/a")), tx.range(12))]
+// [ 10, 11, 'n/a', 'n/a', 'n/a' ]
+
+[...tx.iterator(tx.page(3, 5), rtx.ange(12))]
+// []
+```
+
 ### Multiplexing / parallel transducer application
@@ -133,0 +154,0 @@

xform/benchmark.js

@@ -24,3 +24,4 @@ "use strict";
         return comp_1.compR(rfn, (acc, _) => {
-            let t = Date.now(), x = t - prev;
+            const t = Date.now();
+            const x = t - prev;
             prev = t;
@@ -27,0 +28,0 @@ return r(acc, x);

xform/flatten-with.js

@@ -7,3 +7,4 @@ "use strict";
     return (rfn) => {
-        const r = rfn[2], flatten = (acc, x) => {
+        const r = rfn[2];
+        const flatten = (acc, x) => {
             x = fn(x);
@@ -10,0 +11,0 @@ if (x) {

xform/partition.js

@@ -14,3 +14,4 @@ "use strict";
     return ([init, complete, reduce]) => {
-        let buf = [], skip = 0;
+        let buf = [];
+        let skip = 0;
         return [
@@ -17,0 +18,0 @@ init,

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Improved metrics

Total package byte prevSize

140293

increased by1.94%

Number of package files

218

increased by0.93%

Lines of code

2975

increased by2.23%

Number of lines in readme file

740

increased by2.92%

Dependency changes

• [e-mail]/api@^2.0.2