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How do I test if a string is empty in Objective-C?
...aced with its contents so if you invoke the macro with something different from a NSString you still get a message from the compiler. Categories would be far better anyway.
– Zmaster
Aug 8 '13 at 12:06
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Can we write our own iterator in Java?
...interface. If you're using an existing iterable object (say, a LinkedList) from java.util, you'll need to either subclass it and override its iterator function so that you return your own, or provide a means of wrapping a standard iterator in your special Iterator instance (which has the advantage o...
Fixed page header overlaps in-page anchors
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html {
scroll-padding-top: 70px; /* height of sticky header */
}
from: https://css-tricks.com/fixed-headers-on-page-links-and-overlapping-content-oh-my/
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What is a JavaBean exactly?
...on. Lots of libraries depend on it though.
With respect to Serializable, from the API documentation:
Serializability of a class is enabled by the class implementing the
java.io.Serializable interface. Classes that do not implement this
interface will not have any of their state serialized ...
Why does pattern matching in Scala not work with variables?
...g with upper case, or in back ticks, do you need to be aware that it comes from the surrounding scope.
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How does C compute sin() and other math functions?
...Taylor-series approximations for both sin(x) and cos(x), then using values from a precomputed table to refine the approximation.
When |x| > 2, none of the above algorithms would work, so the code starts by computing some value closer to 0 that can be fed to sin or cos instead.
There's yet another...
UILabel - auto-size label to fit text?
....width;
}
@end
You could more simply use the sizeToFit method available from the UIView class, but set the number of lines to 1 to be safe.
iOS 6 update
If you are using AutoLayout, then you have a built in solution. By setting the number of lines to 0, the framework will resize your label ap...
ASP.NET MVC on IIS 7.5
...%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -ir
Note from David Murdoch's comment:
That the .net version has changed
since this Answer was posted. Check
which version of the framework is in
the %windir%\Microsoft.NET\Framework64
directory and change the command
a...
Temporarily disable auto_now / auto_now_add
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from Django documentation: docs.djangoproject.com/en/1.9/topics/db/queries/… Be aware that the update() method is converted directly to an SQL statement. It is a bulk operation for direct updates. It doesn’t run any save(...
What's the difference between a Python “property” and “attribute”?
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@TinLuu - I think we are both saying the same thing from opposite ends of the perspective. The user of the class should only see x. One way. If the user of the class finds out about _x, they use it at their own risk.
– lit
Sep 26 '17 at 1...