baconjs - npm Package Compare versions

Comparing version 0.2.7 to 0.2.8

component.json

 {
   "name": "baconjs",
-  "version": "0.2.7",
+  "version": "0.2.8",
   "main": "./dist/Bacon.js"
 }

dist/Bacon.js

@@ -214,2 +214,105 @@ (function() {
 
+  Bacon.zipAsArray = function() {
+    var more, streams;
+    streams = arguments[0], more = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
+    if (!(streams instanceof Array)) {
+      streams = [streams].concat(more);
+    }
+    return Bacon.zipWith(streams, Array);
+  };
+
+  Bacon.zipWith = function(streams, f) {
+    return new EventStream(function(sink) {
+      var bufs, handle, j, s, unsubAll, unsubs, unsubscribed, zipSink, _i, _len;
+      bufs = (function() {
+        var _i, _len, _results;
+        _results = [];
+        for (_i = 0, _len = streams.length; _i < _len; _i++) {
+          s = streams[_i];
+          _results.push([]);
+        }
+        return _results;
+      })();
+      unsubscribed = false;
+      unsubs = (function() {
+        var _i, _len, _results;
+        _results = [];
+        for (_i = 0, _len = streams.length; _i < _len; _i++) {
+          s = streams[_i];
+          _results.push(nop);
+        }
+        return _results;
+      })();
+      unsubAll = (function() {
+        var _i, _len;
+        for (_i = 0, _len = unsubs.length; _i < _len; _i++) {
+          f = unsubs[_i];
+          f();
+        }
+        return unsubscribed = true;
+      });
+      zipSink = function(e) {
+        var reply;
+        reply = sink(e);
+        if (reply === Bacon.noMore || e.isEnd()) {
+          unsubAll();
+        }
+        return reply;
+      };
+      handle = function(i) {
+        return function(e) {
+          var b, reply, vs;
+          if (e.isError()) {
+            return zipSink(e);
+          } else if (e.isInitial()) {
+            return Bacon.more;
+          } else {
+            bufs[i].push(e);
+            if (!e.isEnd() && _.all((function() {
+              var _i, _len, _results;
+              _results = [];
+              for (_i = 0, _len = bufs.length; _i < _len; _i++) {
+                b = bufs[_i];
+                _results.push(b.length);
+              }
+              return _results;
+            })())) {
+              vs = (function() {
+                var _i, _len, _results;
+                _results = [];
+                for (_i = 0, _len = bufs.length; _i < _len; _i++) {
+                  b = bufs[_i];
+                  _results.push(b.shift().value());
+                }
+                return _results;
+              })();
+              reply = zipSink(e.apply(_.always(f.apply(null, vs))));
+            }
+            if (_.any((function() {
+              var _i, _len, _results;
+              _results = [];
+              for (_i = 0, _len = bufs.length; _i < _len; _i++) {
+                b = bufs[_i];
+                _results.push(b.length && b[0].isEnd());
+              }
+              return _results;
+            })())) {
+              reply = zipSink(end());
+            }
+            return reply || Bacon.more;
+          }
+        };
+      };
+      for (j = _i = 0, _len = streams.length; _i < _len; j = ++_i) {
+        s = streams[j];
+        unsubs[j] = (function(i) {
+          if (!unsubscribed) {
+            return s.subscribe(handle(i));
+          }
+        })(j);
+      }
+      return unsubAll;
+    });
+  };
+
   Bacon.combineAsArray = function() {
@@ -897,2 +1000,9 @@ var more, s, streams, values,
 
+    Observable.prototype.zip = function(other, f) {
+      if (f == null) {
+        f = Array;
+      }
+      return Bacon.zipWith([this, other], f);
+    };
+
     Observable.prototype.diff = function(start, f) {
@@ -2026,2 +2136,12 @@ f = toCombinator(f);
     },
+    any: function(xs) {
+      var x, _i, _len;
+      for (_i = 0, _len = xs.length; _i < _len; _i++) {
+        x = xs[_i];
+        if (x) {
+          return true;
+        }
+      }
+      return false;
+    },
     without: function(x, xs) {
@@ -2028,0 +2148,0 @@ return _.filter((function(y) {

dist/Bacon.min.js

@@ -1,1 +0,1 @@
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package.json

 {
   "name": "baconjs",
-  "version": "0.2.7",
+  "version": "0.2.8",
   "author": "Juha Paananen",
@@ -5,0 +5,0 @@ "licenses": [

README.md

@@ -450,2 +450,33 @@ Bacon.js
 
+`observable.zip(other, f)` return an EventStream with elements
+pair-wise lined up with events from this and the other stream. 
+A zipped stream will publish only when it has a value from each 
+stream and will only produce values up to when any single stream ends.
+
+Be careful not to have too much "drift" between streams. If one stream
+produces many more values than some other excessive buffering will
+occur inside the zipped observable. 
+
+Example 1: 
+
+```js
+var x = Bacon.fromArray([1, 2])
+var y = Bacon.fromArray([3, 4])
+x.zip(y, function(x, y) { return x + y })
+
+# produces values 4, 6
+```
+
+Example 2:
+
+You can use zip to combine observables that are pairwise synchronized
+from e.g. projections or sampling by the same property, while avoiding
+the double-processing that would happen recombining with `combine`.
+
+```js
+var x = obs.map('.x')
+var y = obs.map('.y')
+x.zip(y, makeComplex)
+```
+
 `observable.slidingWindow(n)` returns a Property that represents a
@@ -704,2 +735,30 @@ "sliding window" into the history of the values of the Observable. For
 
+`Bacon.zipAsArray(streams)` zips the array of stream in to a new
+EventStream that will have an array of values from each source stream as
+its value. Zipping means that events from each stream are combine
+pairwise so that the 1st event from each stream is published first, then
+the 2nd event from each. The results will be published as soon as there
+is a value from each source stream.
+
+Be careful not to have too much "drift" between streams. If one stream
+produces many more values than some other excessive buffering will
+occur inside the zipped observable. 
+
+Example:
+
+```js
+x = Bacon.fromArray([1,2,3])
+y = Bacon.fromArray([10, 20, 30])
+z = Bacon.fromArray([100, 200, 300])
+Bacon.zipAsArray(x, y, z)
+
+# produces values 111, 222, 333
+```
+
+`Bacon.zipAsArray(stream1, stream2, ..)` just like above, but with streams
+provided as a list of arguments as opposed to a single array. 
+
+`Bacon.zipWith(streams, f)` like `zipAsArray` but uses the given n-ary
+function to combine the n values from n streams, instead of returning them in an Array.
+
 Function Construction rules
@@ -706,0 +765,0 @@ ---------------------------

RELEASE-NOTES.md

@@ -0,1 +1,5 @@
+## 0.2.8
+
+- Add EventStream.zip, Bacon.zipWith, Bacon.zipAsArray
+
 ## 0.2.7
@@ -2,0 +6,0 @@

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License

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Found 1 instance in 1 package

Fixed alerts

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License

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Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

577401

increased by1.65%

Lines of code

12693

increased by0.93%

Number of lines in readme file

1110

increased by5.61%

No dependency changes