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“PKIX path building failed” and “unable to find valid certification path to requested target”
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Go to URL in your browser:
firefox - click on HTTPS certificate chain (the lock icon right next to URL address). Click "more info" > "security" > "show certificate" > "details" > "export..". Pickup the name and choose file type example.cer
chrome - click on s...
Principal component analysis in Python
...xis=0)
with the little class Center or the like, below.
See also:
http://en.wikipedia.org/wiki/Principal_component_analysis
http://en.wikipedia.org/wiki/Singular_value_decomposition
Press et al., Numerical Recipes (2 or 3 ed), SVD
PCA micro-tutorial
iris-pca .py .png
"""
f...
Is explicitly closing files important?
...bug you can't find the bug easily. you can also read more in my blog entry http://magnificentzps.blogspot.in/2014/04/importance-of-closing-file-descriptor.html
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Difference between “module.exports” and “exports” in the CommonJs Module System
On this page ( http://docs.nodejitsu.com/articles/getting-started/what-is-require ), it states that "If you want to set the exports object to a function or a new object, you have to use the module.exports object."
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How to bring back “Browser mode” in IE11?
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Easiest way, especially if in MSDN,,wasted hours of my time, stupid MS
http://support.microsoft.com/kb/2900662/en-us?sd=rss
Open the Developer Tools pane. To do this, press F12.
Open the Emulation screen. To do this, press Ctrl+8.
On the Document mode list under Mode, click 9.
On the User agen...
What is the difference between == and equals() in Java?
...ls(...)" (method in the java.lang.Object class) through these links:
==: http://docs.oracle.com/javase/tutorial/java/nutsandbolts/op2.html
.equals(...): http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html#equals(java.lang.Object)
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Generic Repository With EF 4.1 what is the point
...ock the generic interface with specific test data and you are good to go.
http://refactorthis.wordpress.com/2011/05/31/mock-faking-dbcontext-in-entity-framework-4-1-with-a-generic-repository/
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Is there a way to detect if a browser window is not currently active?
... user is still able to see it (so it still need to be refreshed). See also http://javascript.info/tutorial/focus
Relying on user activity (mouse move, clicks, key typed) gives you a lot of false positive too. Think about the same case as above, or a user watching a video.
In order to improve the i...
android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi
...it the size of the screen without affecting the static area of the image.
http://developer.android.com/guide/topics/graphics/2d-graphics.html#nine-patch
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CSS z-index paradox flower
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Here's my attempt: http://jsfiddle.net/Kx2k5/1/
(successfully tested on Fx27, Ch33, IE9, Sf5.1.10 and Op19)
CSS
.item {
/* include borders on width and height */
-webkit-box-sizing : border-box;
-moz-box-sizing : border-box;
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