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Are string.Equals() and == operator really same? [duplicate]
... apparent contradictions that appear in the question are caused because in one case the Equals function is called on a string object, and in the other case the == operator is called on the System.Object type. string and object implement equality differently from each other (value vs. reference respe...
How can I get the full object in Node.js's console.log(), rather than '[Object]'?
...log() implicitly applies util.inspect() to its arguments, assuming the 1st one is not a format string. If you're happy with util.inspect()'s default options, simply console.log(myObject) will do - no need to require util; console.dir() does the same, but accepts only ` object to inspect; as of at le...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
I am curious if anyone has any information about the scalability of HTML WebSockets. For everything I've read it appears that every client will maintain an open line of communication with the server. I'm just wondering how that scales and how many open WebSocket connections a server can handle. Mayb...
Map over object preserving keys
...nction _.mapObject to map the values and preserve the keys.
_.mapObject({ one: 1, two: 2, three: 3 }, function (v) { return v * 3; });
// => { one: 3, two: 6, three: 9 }
DEMO
With Lodash
Lodash provides a function _.mapValues to map the values and preserve the keys.
_.mapValues({ one: 1,...
How can I initialise a static Map?
...tic {
Map<Integer, String> aMap = ....;
aMap.put(1, "one");
aMap.put(2, "two");
myMap = Collections.unmodifiableMap(aMap);
}
}
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Copying files from one directory to another in Java
I want to copy files from one directory to another (subdirectory) using Java. I have a directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to c...
In a PHP project, what patterns exist to store, access and organize helper objects? [closed]
....html
http://googletesting.blogspot.com/2008/08/where-have-all-singletons-gone.html
Alternatives
a service provider
http://java.sun.com/blueprints/corej2eepatterns/Patterns/ServiceLocator.html
dependency injection
http://en.wikipedia.org/wiki/Dependency_injection
and a php explanation:
http:/...
Calculate relative time in C#
...(ts.TotalSeconds);
if (delta < 1 * MINUTE)
return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";
if (delta < 2 * MINUTE)
return "a minute ago";
if (delta < 45 * MINUTE)
return ts.Minutes + " minutes ago";
if (delta < 90 * MINUTE)
return "an hour ago";
if (...
Why is it a bad practice to return generated HTML instead of JSON? Or is it?
... going to make the biggest difference (not choosing between HTML and JSON)
One thing that could be taken into consideration, though, is what resources you'll need on the client to recreate the HTML (or the DOM structure) from the JSON data... compare that to pushing a portion of HTML into the page ;...
What's the difference between an inverted index and a plain old index?
...
One common use is "...to allow fast full-text searching."
The two types denote directionality. One takes you forward through the index, and the other takes you backward (the inverse) through the index. That's it. There's no...