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How do CDI and EJB compare? interact?
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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
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Lock-free multi-threading is for real threading experts
...
Joe Duffy's book:
http://www.bluebytesoftware.com/books/winconc/winconc_book_resources.html
He also writes a blog on these topics.
The trick to getting low-lock programs right is to understand at a deep level precisely what the rules of the ...
What's the difference between “groups” and “captures” in .NET regular expressions?
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Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
... is, keep a reference of your running AsyncTask in the Application Class - http://developer.android.com/reference/android/app/Application.html
Everytime you start an AsyncTask, set it on the Application and when it finishes it set it to null.
When a fragment/activity starts you can check if any As...
Big O, how do you calculate/approximate it?
...ns in your algorithm.
Here are some of the most common cases, lifted from http://en.wikipedia.org/wiki/Big_O_notation#Orders_of_common_functions:
O(1) - Determining if a number is even or odd; using a constant-size lookup table or hash table
O(logn) - Finding an item in a sorted array with a bina...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...CS7*)container withCertificateData:(NSData*)certificateData
{ // Based on: https://developer.apple.com/library/content/releasenotes/General/ValidateAppStoreReceipt/Chapters/ValidateLocally.html#//apple_ref/doc/uid/TP40010573-CH1-SW17
static int verified = 1;
int result = 0;
OpenSSL_add_a...
How do you fix a bad merge, and replay your good commits onto a fixed merge?
...
This is the best way:
http://github.com/guides/completely-remove-a-file-from-all-revisions
Just be sure to backup the copies of the files first.
EDIT
The edit by Neon got unfortunately rejected during review.
See Neons post below, it might con...
Why do we copy then move?
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Why is an int in OCaml only 31 bits?
...e "representation of integers, tag bits, heap-allocated values" section of https://ocaml.org/learn/tutorials/performance_and_profiling.html for a good description.
The short answer is that it is for performance. When passing an argument to a function it is either passed as an integer or a pointer....