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What do Clustered and Non clustered index actually mean?
...uld be ordered so that one can simply do address arithmetic to search. The idea of the cluster is to cater the table to the performance of a particular index. To be clear, the records of the table will be reordered to match the order that the index is originally in.
– FLGMwt
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Android Left to Right slide animation
...time, no matter what, it does the left to right animation. Anyone have any ideas???
– Ryan C
Feb 28 '15 at 23:55
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...ust a single matrix, with the R matrix embedded in the upper triangle. No idea where the rest of the matrix comes from, and no Q matrix can be accessed.
Armadillo
Advantages:
1. Wide range of decompositions and other functions (including QR).
2. Reasonably fast (uses expression templates), but aga...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...calling SHA1 1000 times means that the
attacker also needs to do this. The idea being that unless they have
time on a supercomputer they won’t have enough resource to brute
force the password from the hash. It would massively slow down the time to generate a hash table for a given salt.
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What is a lambda expression in C++11?
...tivity was almost 1 year ago? Anyway, you're contributing some interesting ideas I haven't seen before!
– Piotr99
Mar 1 '13 at 8:32
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When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...stems (MQ) are older in implementation but they are a newer in engineering idea of: transactional persistent queues. Scala Actors and Akka maybe a newer implementation but are built on an older concurrency model of Actors.
The two models however end up being very similar in practice because they bo...
Learning assembly [closed]
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I really, really like this idea.
– Millie Smith
Sep 23 '14 at 14:56
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show 1 more comment
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Passing Data between View Controllers
...e next View Controller
The following is an example based on the video. The idea is to pass a string from the text field in the First View Controller to the label in the Second View Controller.
Create the storyboard layout in the Interface Builder. To make the segue, you just Control click on the bu...
Build fat static library (device + simulator) using Xcode and SDK 4+
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Any idea how to make this work with XCode 5 and ARM64? If I leave architectures as standard, it makes the library with armv7, armvs7 and i386 as expected. If I set architectures to standard including 64bit, then the library onl...
Best Practices: Salting & peppering passwords?
...logical, right?
That's why so many people believe that peppers are a good idea. It "makes sense".
The Reality Of Peppers
In the security and cryptography realms, "make sense" isn't enough. Something has to be provable and make sense in order for it to be considered secure. Additionally, it has t...