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“PKIX path building failed” and “unable to find valid certification path to requested target”
...ake_failure for all the remote repository urls I tried with. SandeepanNath:test sandeepan.nath$ java InstallCert repo1.maven.org:443 Loading KeyStore /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/security/cacerts... Opening connection to repo1.maven.org:443 ... Starting SSL...
Principal component analysis in Python
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You might have a look at MDP.
I have not had the chance to test it myself, but I've bookmarked it exactly for the PCA functionality.
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Understanding generators in Python
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Hmm I think you're right, at least according to a test of a few lines in Python 2.6. A generator expression returns an iterator (aka 'generator object'), not a generator.
– Craig McQueen
Dec 4 '09 at 1:34
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Looking for a good world map generation algorithm [closed]
...nents from bad ones. Start out with hand-drawn continents as well as your test continents, until you get something you like.
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What is Gradle in Android Studio?
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One of the fastest ways I've found to learn what an unknown tool does and where it falls in the pipeline, is to type into Google the name of the tool and "vs". The results will usually show "X vs Y" where Y is some other tool you might be ...
How do I make calls to a REST api using C#?
... new RestRequest("get", Method.GET) { Credentials = new NetworkCredential("testUser", "P455w0rd") };
request.AddHeader("Authorization", "Bearer qaPmk9Vw8o7r7UOiX-3b-8Z_6r3w0Iu2pecwJ3x7CngjPp2fN3c61Q_5VU3y0rc-vPpkTKuaOI2eRs3bMyA5ucKKzY1thMFoM0wjnReEYeMGyq3JfZ-OIko1if3NmIj79ZSpNotLL2734ts...
Avoid synchronized(this) in Java?
...'t agree at all with this answer: a lock should always be held for the shortest amount of time possible, and that's precisely the reason why you'd want to "do stuff" around a synchronized block instead of synchronizing the whole method.
– Olivier
Jan 14 '09 at ...
When to use dynamic vs. static libraries
...er, because it is rarely used dynamic linking saves on compile time, makes testing easier/faster however, if I were to build a release version, I think I would always use static library just in case of compatibility issues
– ReachConnection
Oct 16 '09 at 19:34...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...y sum of squared by rsqrt of it, which is exactly what you've done in your tests), and it performed better.
2. Computing rsqrt using simple lookup table might be easier, as for rsqrt, when x goes to infinity, 1/sqrt(x) goes to 0, so for small x's the function values doesn't change (a lot), whereas...
What is the memory consumption of an object in Java?
...o the memory. The following coding example demonstrate its usage.
package test;
import java.util.ArrayList;
import java.util.List;
public class PerformanceTest {
private static final long MEGABYTE = 1024L * 1024L;
public static long bytesToMegabytes(long bytes) {
return byt...