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Explanation of strong and weak storage in iOS5
I am new to iOS5 development and using objective-c. I have trouble understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight.
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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...conversion, computational geometry, animation easing/blending, etc.) often times normalized numbers are used. That is, numbers between 0.0 and 1.0.
It is important to know the edge cases if the endpoints are inclusive or exclusive:
(0,1) = 1e-M .. 0.999...
(0,1] = 1e-M .. 1.0
[0,1) = 0.0 .. 0.999...
How do browsers pause/change Javascript when tab or window is not active?
...onFrame is not supported by IE 9- and Opera 12-.
The test logs the actual time it takes for a setInterval and requestAnimationFrame to run in different browsers, and gives you the results in the form of a distribution. You can change the number of milliseconds for setInterval to see how it runs und...
What's wrong with nullable columns in composite primary keys?
ORACLE does not permit NULL values in any of the columns that comprise a primary key. It appears that the same is true of most other "enterprise-level" systems.
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Understanding checked vs unchecked exceptions in Java
...d most languages don't have them. So you can always throw a subclass of RuntimeException (unchecked exception)
However, I think checked exceptions are useful - they are used when you want to force the user of your API to think how to handle the exceptional situation (if it is recoverable). It's jus...
Private virtual method in C++
What is the advantage of making a private method virtual in C++?
5 Answers
5
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Why can templates only be implemented in the header file?
...ay that this could work unless we either
Have to recompile foo.cpp every time we change any other file in the program, in case it added a new novel instantiation of MyClass<T>
Require that baz.cpp contains (possibly via header includes) the full template of MyClass<T>, so that the comp...
Which characters make a URL invalid?
Which characters make a URL invalid?
10 Answers
10
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Expand Python Search Path to Other Source
...ed modules. sys.path is just the list of directories Python searches every time it gets asked to import a module, and you can alter it as needed (although I wouldn't recommend removing any of the standard directories!). Any directories you put in the environment variable PYTHONPATH will be inserted ...
How to structure a express.js application?
...of code that punches less so it re-compiles any of my less into css at run time.
I have code that sets up all my routes
I call this small nko module
Finally I start the server by listening to a port.
Just for example let's look at the routing file
var fs = require("fs"),
parseCookie = require...