chakra

How can my node.js code see if it's running under official nodejs, iojs, jxcore, or node-chakracore?

由 删除回忆录丶 提交于 2019-12-02 07:11:13
问题 There are now several forks of nodejs for various reasons. For my node code to see which fork it is running under, what is currently the best way? The forks I am aware of are: The official nodejs release iojs - I guess it's now deprecated since it's rejoined the official nodejs, but it's still of interest JXcore - a fork that supports multiple CPUs/core; multiple JS engines including V8, Mozilla's SpiderMonkey, and Microsoft's ChakraCore; and packaging of js apps so npm doesn't need to be

ES6 Maps and Sets: how are object keys indexed efficiently?

由 房东的猫 提交于 2019-12-02 06:00:33
问题 In ES6, Maps and Sets can use Objects as keys. However since the ES6 specification does not dictate the underlying implementation of these datastructures, I was wondering how does the modern JS engines store the keys in order to guarantee O(1) or at least sublinear retrieval? In a language like Java, the programmer can explicitly provide a (good) hashCode method which would hash the keys evenly in the key space in order to guarantee the performance. However since JS does not have such

Embedding ChakraHost (c#) for WebGL example

由 こ雲淡風輕ζ 提交于 2019-12-02 03:15:38
I have looked into the example involving embedding the javascript framework (paper.js) for drawing output to XAML's CanvasControl through the JsBridge implementation of ChakraHost. To include the paper.js framework and the javascript to call the framework (e.g. the paper.js's tadpoles example), we only need these statements: await host.ReadAndExecute("paper-core.js", "paperjs-refs"); await host.ReadAndExecute("tadpoles.js", "paperjs-refs"); To embed a WebGL javascript framework using e.g. WebGL lesson3 , in addition to include the javascript library and calling code e.g. lesson3.js, these

ES6 Maps and Sets: how are object keys indexed efficiently?

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-02 02:25:28
In ES6, Maps and Sets can use Objects as keys. However since the ES6 specification does not dictate the underlying implementation of these datastructures, I was wondering how does the modern JS engines store the keys in order to guarantee O(1) or at least sublinear retrieval? In a language like Java, the programmer can explicitly provide a (good) hashCode method which would hash the keys evenly in the key space in order to guarantee the performance. However since JS does not have such features, would it still be fair to still assume they use some sort of hashing in the Maps and Sets

Will the IE10 Chakra JScript engine available as stand alone accessible from C#?

由 [亡魂溺海] 提交于 2019-11-28 06:34:35
Microsoft may (actually I think it will) in the future release the IE10 Chakra (JScript engine) as a stand alone module, like google V8 JavaScript Engine. The question is: will the engine accessible from C# like IronPython is? C# and IronPython are both .NET languages. They share the same run-time, so they can interact easily. There's nothing to suggest that Chakra is built on .NET; rather, given that it compiles the JavaScript to machine code for the sake of performance, I'd say that it won't integrate in the same way. They might provide a .NET API that would make it possible to pass JS from

Will the IE10 Chakra JScript engine available as stand alone accessible from C#?

由 时光总嘲笑我的痴心妄想 提交于 2019-11-27 01:28:46
问题 Microsoft may (actually I think it will) in the future release the IE10 Chakra (JScript engine) as a stand alone module, like google V8 JavaScript Engine. The question is: will the engine accessible from C# like IronPython is? 回答1: C# and IronPython are both .NET languages. They share the same run-time, so they can interact easily. There's nothing to suggest that Chakra is built on .NET; rather, given that it compiles the JavaScript to machine code for the sake of performance, I'd say that it

What is the ProgId or CLSID for IE9's Javascript engine (code-named “Chakra”)

由 和自甴很熟 提交于 2019-11-26 09:07:50
问题 Using .NET, I can write an app that hosts a scripting engine that complies with Microsoft\'s IActiveScript conventions. This includes JScript and VBScript from Microsoft, and also PerlScript, RubyScript and I don\'t know what else from third-parties. The way to do it in code is something like this: Type engine = Type.GetTypeFromProgID(progId, true); _engine = Activator.CreateInstance(engine) as IActiveScript; where the progId can take the value Javascript, JScript, ECMAScript, VBScript, and
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