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What is the difference between the states selected, checked and activated in Android?
...ost View in the layout (and layouts do not implement checkable) ... and it does NOT propagate without help. These workarounds were of the following form: Extend the root layout to implement Checkable. In its constructor, recursively find all the children that implement Checkable. When setChecked() e...
How do you Encrypt and Decrypt a PHP String?
...mode, it's only a building block. Using ECB as demonstrated in this answer does not actually encrypt the string securely. Do not use ECB in your code. See Scott's answer for a good solution.
I got it on myself. Actually i found some answer on google and just modified something. The result is compl...
Places where JavaBeans are used?
...></td>
</tr>
</c:forEach>
</table>
Does it make sense? You see, it's kind of a convention which you can use everywhere to store, transfer and access data.
See also:
JavaBeans specification
...
What are the underlying data structures used for Redis?
...e score.
5. Zip List
A Zip List is like a doubly linked list, except it does not use pointers and stores the data inline.
Each node in a doubly linked list has at 3 pointers - one forward pointer, one backward pointer and one pointer to reference the data stored at that node. Pointers require me...
Get type of all variables
...cle.subspaceresponder(...). Instead of puking a type-error, the R program does gymnastics to transform the type and then do something surprisingly useful. The newbie programmer posts the code on his blog and says "look at this tremendous thing I did with 3 lines of R code! I have no idea how it k...
What's the $unwind operator in MongoDB?
...rray of 3 items, in this case being "fun", "good" and "fun".
What $unwind does is allow you to peel off a document for each element and returns that resulting document.
To think of this in a classical approach, it would be the equivilent of "for each item in the tags array, return a document with o...
Could someone explain the pros of deleting (or keeping) unused code?
...ffort invested in vain, and preserving the unused product of those efforts does not validate those efforts. We keep code because it is useful, now, not as some kind of memorial to the efforts of the authors.
Code may be tested on syntetical and real environment
I'm sorry, I don't know w...
How to read the output from git diff?
...e (100644 means that it is ordinary file and not e.g. symlink, and that it doesn't have executable permission bit), and about shortened hash of preimage (the version of file before given change) and postimage (the version of file after change). This line is used by git am --3way to try to do a 3-wa...
Received fatal alert: handshake_failure through SSLHandshakeException
...this is the cause. The resolution in this case would be get the server (it does not appear to be yours) to use the correct certificate.
Since, the underlying failure cannot be pinpointed, it is better to switch on the -Djavax.net.debug=all flag to enable debugging of the SSL connection establishe...
How to Implement DOM Data Binding in JavaScript
... You'll see that there's a primary Template constructor that does the parsing, holds the different MyCtor objects, and provides an interface to update each on by its identifier. Let me know if you have questions. :) EDIT: ...use this link instead... I had forgotten that I had an expone...