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File changed listener in Java
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"More NIO features" has file watch functionality, with implementation dependent upon the underlying OS. Should be in JDK7.
Update: Was added to Java SE 7. Chris Janicki offers a link to the relevant Java tutorial.
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What's the best way to limit text length of EditText in Android
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The modulo operation on negative numbers in Python
...3.
It is chosen over the C behavior because a nonnegative result is often more useful. An example is to compute week days. If today is Tuesday (day #2), what is the week day N days before? In Python we can compute with
return (2 - N) % 7
but in C, if N ≥ 3, we get a negative number which is an i...
Why I am Getting Error 'Channel is unrecoverably broken and will be disposed!'
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Have you used another UI thread? You shouldn't use more than 1 UI thread and make it look like a sandwich. Doing this will cause memory leaks.
I have solved a similar issue 2 days ago...
To keep things short: The main thread can have many UI threads to do multiple works, bu...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
... to the reciprocal, accurate to about 11 bits.
sqrtss is generating a far more accurate result, for when accuracy is required. rsqrtss exists for the cases when an approximation suffices, but speed is required. If you read Intel's documentation, you will also find an instruction sequence (recipro...
Read only the first line of a file?
... Python 3 you should specify the file encoding for the file you open. Read more...
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Why does JQuery have dollar signs everywhere?
...horter) if you like:
// These are the same barring your using noConflict (more below)
var divs = $("div"); // Find all divs
var divs = jQuery("div"); // Also find all divs, because
console.log($ === jQuery); // "true"
If you don't want to use the alias, you don't have to. And if you want $...
Design by contract using assertions or exceptions? [closed]
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Django CharField vs TextField
...milar) — those are usually specified with a maximum length, and might be more efficient in terms of performance or storage — and text (or similar) types — those are usually limited only by hardcoded implementation limits (not a DB schema).
PostgreSQL 9, specifically, states that "There is no ...