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Why does Math.floor return a double?
...seems inconsistent with the Math.Round functions, which do return int/long and handle the special cases in a different way.
– zod
May 11 '11 at 11:08
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Sockets: Discover port availability using Java
...ecking the DatagramSocket as well to check if the port is avaliable in UDP and TCP.
Hope this helps.
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How can I debug my JavaScript code? [closed]
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I like firebug, but I wouldn't claim it to be head and shoulders above webkit's inspector.
– Ryan Florence
Jun 12 '09 at 19:00
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What is the most efficient string concatenation method in python?
... Guido. Although it is worth remembering also that this is an old article and it predates the existence of things like ''.join (although I guess string.joinfields is more-or-less the same)
On the strength of that, the array module may be fastest if you can shoehorn your problem into it. But ''.jo...
How do I find the caller of a method using stacktrace or reflection?
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A StackTraceElement has getClassName(), getFileName(), getLineNumber() and getMethodName().
You will have to experiment to determine which index you want
(probably stackTraceElements[1] or [2]).
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Converting from a string to boolean in Python?
...ref.html#distutils.util.strtobool
True values are y, yes, t, true, on and 1; false values are n, no, f, false, off and 0. Raises ValueError if val is anything else.
Be aware that distutils.util.strtobool() returns integer representations and thus it needs to be wrapped with bool() to get Bool...
What does HTTP/1.1 302 mean exactly?
...e value of the original URL, while the 302 keeps the value of the original and can thus potentially reduce the value by creating two, logically-distinct URLs that each produce the same content (search engines view them as distinct duplicates rather than a single resource with two names).
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C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
...unds it to the nearest 1000 so the precision is only to the "second" level and not to the milliseconds level.
16 Answers
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How to get next/previous record in MySQL?
Say I have records with IDs 3,4,7,9 and I want to be able to go from one to another by navigation via next/previous links. The problem is, that I don't know how to fetch record with nearest higher ID.
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Unable to locate tools.jar
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Yes, you've downloaded and installed the Java Runtime Environment (JRE) instead of the Java Development Kit (JDK). The latter has the tools.jar, java.exe, javac.exe, etc.
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