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What are Runtime.getRuntime().totalMemory() and freeMemory()?

... Runtime.getRuntime().totalMemory() , Runtime.getRuntime().freeMemory() , and Runtime.getRuntime().maxMemory() is. 7 Ans...
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Is there a job scheduler library for node.js? [closed]

...hould be implemented? Should I just set callback to be called every second and check the time and start jobs scheduled for the time or what? ...
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Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?

.... Is it ever advantageous to use goto in a language that supports loops and functions? If so, why? 25 Answers ...
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How do I represent a hextile/hex grid in memory?

...Amit Patel has posted an amazing page on this topic. It's so comprehensive and wonderful that it needs to be the definitive answer to this question: Hexagonal Grids share | improve this answer ...
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Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding

...e with an ATmega328 . I am working on Ubuntu 12.04 (Precise Pangolin), and the Arduino IDE's version is 1.0. Recently, I tried to upload a few of the sample sketches onto it, such as the Blink one. However, none of my attempts are working and they result in the same error every time I try it: ...
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Why does Python code use len() function instead of a length method?

...tocol in Python is to implement this method on objects which have a length and use the built-in len() function, which calls it for you, similar to the way you would implement __iter__() and use the built-in iter() function (or have the method called behind the scenes for you) on objects which are it...
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How to remove leading and trailing zeros in a string? Python

... What about a basic your_string.strip("0") to remove both trailing and leading zeros ? If you're only interested in removing trailing zeros, use .rstrip instead (and .lstrip for only the leading ones). [More info in the doc.] You could use some list comprehension to get the sequences you w...
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Why is char[] preferred over String for passwords?

...method. Similarly, I have come across a suggestion not to use String to handle passwords. 17 Answers ...
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jQuery: Get height of hidden element in jQuery

... is within a div that is hidden. Right now I show the div, get the height, and hide the parent div. This seems a bit silly. Is there a better way? ...
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In C#, why is String a reference type that behaves like a value type?

...it has most of the characteristics of a value type such as being immutable and having == overloaded to compare the text rather than making sure they reference the same object. ...