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is there an virtual environment for node.js?

...your main issue, then maybe consider using the very cool 'bundle' command with npm. This is closer to freezing gems or using bundler in rails, rather than rvm. It's super easy. Just create a package.json file: { "name": "yourapp", "version": "0.0.1", "dependencies": {"jade": "0.4.1"}} and then r...
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Is the order guaranteed for the return of keys and values from a LinkedHashMap object?

I know LinkedHashMap has a predictable iteration order (insertion order). Does the Set returned by LinkedHashMap.keySet() and the Collection returned by LinkedHashMap.values() also maintain this order? ...
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What are the uses of the exec command in shell scripts? [closed]

...n anyone explain what are the uses of the exec command in shell scripting with simple examples? 2 Answers ...
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Differences between Proxy and Decorator Pattern

...corators have a different purpose. A decorator adds one or more responsibilities to an object, whereas a proxy controls access to an object. Proxies vary in the degree to which they are implemented like a decorator. A protection proxy might be implemented exactly like a decorator. On the othe...
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Hidden Features of Java

... Double Brace Initialization took me by surprise a few months ago when I first discovered it, never heard of it before. ThreadLocals are typically not so widely known as a way to store per-thread state. Since JDK 1.5 Java has had extremely...
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The “unexpected ++” error in jslint [duplicate]

...follow | edited Jul 18 '17 at 17:53 user719662 answered Jun 9 '10 at 4:42 ...
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Storing Objects in HTML5 localStorage

...oking at the Apple, Mozilla and Mozilla again documentation, the functionality seems to be limited to handle only string key/value pairs. A workaround can be to stringify your object before storing it, and later parse it when you retrieve it: var testObject = { 'one': 1, 'two': 2, 'three': 3 }; /...
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What is the fastest way to get the value of π?

... The Monte Carlo method, as mentioned, applies some great concepts but it is, clearly, not the fastest, not by a long shot, not by any reasonable measure. Also, it all depends on what kind of accuracy you are looking for. The fastest π I know of is the one with the digits hard coded. Looking at...
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Build tree array from flat array in javascript

I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree. Every entry of the json has : id : a unique id, parentId : the id of the parent node (which is 0 if the node is a root of the tree) level : the level of depth in the tree ...
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How do I load an HTML page in a using JavaScript?

...follow | edited Jan 21 '19 at 13:14 Neuron 3,54333 gold badges2323 silver badges4040 bronze badges ...