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How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
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By the way, here's a test rig I've been using. It would be great if someone figured this out: github.com/algal/AutolayoutAnchorPointTestRig
– algal
Nov 27 '12 at 12:16
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Difference between
...from type C2.
Notes
Here the complete hierarchy if you wish to make some tests
interface A1{}
interface A2{}
interface A3{}
interface A4{}
interface B1 extends A1{}
interface B2 extends A1,A2{}
interface B3 extends A3,A4{}
interface B4 extends A4{}
interface C1 extends B2{}
interface C2 extends...
Is multiplication and division using shift operators in C actually faster?
... clearly (i.e. i*2 rather than i << 1) and let it decide what the fastest assembly/machine code sequence is. It's even possible that the processor itself has implemented the multiply instruction as a sequence of shifts & adds in microcode.
Bottom line--don't spend a lot of time worrying ...
How can I add reflection to a C++ application?
...ot supported by C++ out of the box. This is sad because it makes defensive testing a pain.
There are several approaches to doing reflection:
use the debug information (non portable).
Sprinkle your code with macro's/templates or some other source approach (looks ugly)
Modify a compiler such as clang...
What is the dependency inversion principle and why is it important?
...object will be indpendent of the implementation of the other objects. Unit testing is now simple. Later refactoring for reuse is possible. Design changes have very limited change scopes. Design problems don not cascade. See also the AI pattern "Blackboard" for data dependaecy inversion. Together, ve...
Code Golf: Lasers
The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input .
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Error-Handling in Swift-Language
... }
catchee(error)
}
}
You can write a similar class for testing an Optional returned value instead of Bool value:
class TryOptional<T> {
typealias Tryee = NSErrorPointer -> T?
typealias Catchee = NSError? -> T
typealias Retryee = (NSError?, UInt) -> Try...
Optional Parameters with C++ Macros
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With greatest respect to Derek Ledbetter, David Sorkovsky, Syphorlate for their answers, together with the ingenious method to detect empty macro arguments by Jens Gustedt at
https://gustedt.wordpress.com/2010/06/08/detect-empty-macr...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...n as an anti semi join.
It is important to select a column for the IS NULL test that is either not nullable or for which the join condition ensures that any NULL values will be excluded in order for this pattern to work correctly and avoid just bringing back rows which happen to have a NULL value fo...
How to use java.net.URLConnection to fire and handle HTTP requests?
...the parameters will be available by HttpServletRequest#getParameter().
For testing purposes, you can print the response body to stdout as below:
try (Scanner scanner = new Scanner(response)) {
String responseBody = scanner.useDelimiter("\\A").next();
System.out.println(responseBody);
}
Fir...