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ActiveMQ or RabbitMQ or ZeroMQ or [closed]
... you’ll have to study the 80 pages or so of the guide (which I recommend reading for anybody writing distributed system, even if you don’t use Zmq) before being able to do anything more complicated than sending messages between 2 peers.
ActiveMQ is in the middle ground. Like Zmq, it can be depl...
When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
What are the advantages of using NoSQL databases? I've read a lot about them lately, but I'm still unsure why I would want to implement one, and under what circumstances I would want to use one.
...
Java - get pixel array from image
...ring[] args) throws IOException {
BufferedImage hugeImage = ImageIO.read(PerformanceTest.class.getResource("12000X12000.jpg"));
System.out.println("Testing convertTo2DUsingGetRGB:");
for (int i = 0; i < 10; i++) {
long startTime = System.nanoTime();
int[][] r...
How to get relative path from absolute path
...athTo(...) which I find easier to understand than an int where you need to read the documentation on what the int means.
– Daniel Rose
Jun 22 '10 at 6:32
4
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Numpy matrix to array
...
If you'd like something a bit more readable, you can do this:
A = np.squeeze(np.asarray(M))
Equivalently, you could also do: A = np.asarray(M).reshape(-1), but that's a bit less easy to read.
...
Factors in R: more than an annoyance?
...n be a pain, but my theory is that 90% of why they're a pain is because in read.table and read.csv, the argument stringsAsFactors = TRUE by default (and most users miss this subtlety). I say they are useful because model fitting packages like lme4 use factors and ordered factors to differentially fi...
What are .a and .so files?
... decent source for this info.
To learn about static library files like .a read Static libarary
To learn about shared library files like .so read Library_(computing)#Shared_libraries On this page, there is also useful info in the File naming section.
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Why doesn't Java allow overriding of static methods?
...osts $5." "Okay, I know the price, but I was asking about the color." "I already told you the price!" etc.)
– Jay
Feb 8 '10 at 20:29
6
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When do you use Java's @Override annotation and why?
... One very real downside is that you make the code harder to read by littering it with snails. Perhaps this is a fault of my IDE, but I have experienced this myself.
– treat your mods well
Apr 28 '10 at 20:15
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...lds. Reordering the fields would make it impossible for C code to directly read or write the header (assuming the ZIP implementation would like to access the data directly):
struct __attribute__((__packed__)) LocalFileHeader {
uint32_t signature;
uint16_t minVersion, flag, method, modTime, ...