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Readonly Properties in Objective-C?
...d to tell the compiler that you also want a setter. A common way is to put it in a class extension in the .m file:
@interface YourClass ()
@property (nonatomic, copy) NSString* eventDomain;
@end
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Controlling the screenshot in the iOS 7 multitasking switcher
I've been trying to find some information regarding the new multitasking switcher in iOS 7 and especially the screenshot that the OS takes when the app is going into hibernation.
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Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
I'm just getting started learning SQLite . It would be nice to be able to see the details for a table, like MySQL's DESCRIBE [table] . PRAGMA table_info [table] isn't good enough, as it only has basic information (for example, it doesn't show if a column is a field of some sort or not). Does SQL...
Difference between binary semaphore and mutex
...cture, file, etc..).
A Mutex semaphore is "owned" by the task that takes it. If Task B attempts to semGive a mutex currently held by Task A, Task B's call will return an error and fail.
Mutexes always use the following sequence:
- SemTake
- Critical Section
- SemGive
Here is a simple ...
Circle line-segment collision detection algorithm?
I have a line from A to B and a circle positioned at C with the radius R.
27 Answers
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How to hide close button in WPF window?
I'm writing a modal dialog in WPF. How do I set a WPF window to not have a close button? I'd still like for its WindowState to have a normal title bar.
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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
...SQL specific CommunicationsException:
Communications link failure, then it means that the DB isn't reachable at all. This can have one or more of the following causes:
IP address or hostname in JDBC URL is wrong.
Hostname in JDBC URL is not recognized by local DNS server.
Port number ...
Is it possible to have multiple styles inside a TextView?
Is it possible to set multiple styles for different pieces of text inside a TextView?
18 Answers
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What is a “first chance exception”?
What exactly is a first chance exception? How and where does it originate in a .NET program? And why is it called by that peculiar name (what 'chance' are we talking about)?
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Access parent DataContext from DataTemplate
... a ListBox which binds to a child collection on a ViewModel. The listbox items are styled in a datatemplate based on a property on the parent ViewModel:
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