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Is ServiceLocator an anti-pattern?
...nnot use the classes before satisfying them.
In a typical line of business application you should avoid the use of service location for that very reason. It should be the pattern to use when there are no other options.
Is the pattern an anti-pattern?
No.
For instance, inversion of control containers...
UIGestureRecognizer on UIImageView
...o the actual zoom/rotate yourself in the gesture handlers. See the sample app Touches_GestureRecognizers on how to do the zoom/rotate.
– user467105
Oct 11 '10 at 21:27
77
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Fast way to discover the row count of a table in PostgreSQL
...acy depends on more factors:
Distribution of row size. If a given block happens to hold wider than usual rows, the count is lower than usual etc.
Dead tuples or a FILLFACTOR occupy space per block. If unevenly distributed across the table, the estimate may be off.
General rounding errors.
In mos...
How to install Xcode Command Line Tools
...o longer available through Xcode. Instead they must be downloaded from the Apple Developer Tools site: https://developer.apple.com/downloads/index.action. This requires signing in with a developer account.
Or via terminal (from the release docs): The Command Line Developer Tools package can be inst...
Master-master vs master-slave database architecture?
...
There's a fundamental tension:
One copy: consistency is easy, but if it happens to be down everybody is out of the water, and if people are remote then may pay horrid communication costs. Bring portable devices, which may need to operate disconnected, into the picture and one copy won't cut it.
M...
Difference between “@id/” and “@+id/” in Android
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@+id/foo means you are creating an id named foo in the namespace of your application.
You can refer to it using @id/foo.
@android:id/foo means you are referring to an id defined in the android namespace.
The '+' means to create the symbol if it doesn't already exist. You don't need it (and should...
Why use AJAX when WebSockets is available?
...ebSockets provided a 624% increase in the number of requests per second my application could process.
7 Answers
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Ignore Xcode warnings when using Cocoapods
...undefined method `inhibit_all_warnings!' for #<Pod::Specification for MyApp(1.0)>
– KrauseFx
Nov 3 '12 at 21:27
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UITextView that expands to text using auto layout
...ODE 11/ iOS13, set constraint constant when text view value set in viewWillAppear and update in textViewDidChange.
– ptc
Feb 7 at 5:30
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What's your most controversial programming opinion?
...umentative. I think it could be an interesting question if people treat it appropriately.
407 Answers
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