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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+
...
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...
How do I tell Maven to use the latest version of a dependency?
... true to false, with confusing results).
It is therefore generally a good idea to define exact versions in releases. As Tim's answer points out, the maven-versions-plugin is a handy tool for updating dependency versions, particularly the versions:use-latest-versions and versions:use-latest-releases...
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
...
@John: That's a good idea. I try to treat threads like cheap processes: they are there to do a job and produce a result, not to run around being a second thread of control inside the main program's data structures. But if the amount of work the ...
What's the right OAuth 2.0 flow for a mobile app
... makes the API requests to Facebook using the App
Access Token.
Not an ideal solution but there is new, a better way to do OAuth on mobile devices: Proof Key for Code Exchange
3. Authorization Code Grant Type with PKCE (Proof Key for Code Exchange)
Out of the limitations, a new technique was c...
What's the fastest way to merge/join data.frames in R?
...sql select ever runs and that, in part, accounts for why its so slow. The idea of sqldf is that the data frames in your R session constitute the data base, not the tables in sqlite. Thus each time the code refers to an unqualified table name it will look in your R workspace for it -- not in sqlite...
Is null reference possible?
... to represent null in an enumeration of singleton objects, then it's a bad idea to (de)reference null (it C++11, nullptr).
Why not declare static singleton object that represents NULL within the class as follows and add a cast-to-pointer operator that returns nullptr ?
Edit: Corrected several mist...
Explain “claims-based authentication” to a 5-year-old
... ID card, and then present the ID to the bartender.
Some may laugh at the idea of just writing your birthday on a piece of paper, but this is what is happening when you are authenticating users within the application itself because it is up to the bartender (or your application) to trust the piece ...
Should CSS always preceed Javascript?
.... According to quirksmode, iOS 2.2/Android 1.0 use WebKit 525. I have no idea what Windows Phone looks like.
However, I ran the test on my Android 4 device, and while I saw numbers similar to the desktop results, I hooked it up to the fantastic new remote debugger in Chrome for Android, and Netwo...