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Providing a default value for an Optional in Swift?
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Update
Apple has now added a coalescing operator:
var unwrappedValue = optionalValue ?? defaultValue
The ternary operator is your friend in this case
var unwrappedValue = optionalValue ? optionalValue! : defaultValue
You could also pr...
How can I set the text of a WPF Hyperlink via data binding?
..., and I want the text of the hyperlink to be the name of the object. Right now, I have this:
3 Answers
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Git merge errors
...h:
git checkout master
# Merge the topic branch into master - this should now be a fast-forward
# that leaves you with master exactly as 9-sign-in-out was:
git merge 9-sign-in-out
share
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improve ...
Set Matplotlib colorbar size to match graph
...s, which produces the right height, but it introduces a different problem.
Now the width of the colorbar (as well as the space between colorbar and plot) changes with the width of the plot.
In other words, the aspect ratio of the colorbar is not fixed anymore.
To get both the right height and a giv...
What is the correct way of using C++11's range-based for?
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The above code prints the elements (ints) in the vector:
1 3 5 7 9
Now consider another case, in which the vector elements are not just simple integers,
but instances of a more complex class, with custom copy constructor, etc.
// A sample test class, with custom copy semantics.
class X
{
pu...
Autoresizing masks programmatically vs Interface Builder / xib / nib
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Is everything clear now? Also, I really meant it when I said I appreciated your post. I actually favorited it b/c this has confused me in the past. I think it's a great Q.
– Sam
Oct 19 '11 at 19:31
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What's the difference between git reset --mixed, --soft, and --hard?
...e index matches C.
When we run git reset --soft B, master (and thus HEAD) now points to B, but the index still has the changes from C; git status will show them as staged. So if we run git commit at this point, we'll get a new commit with the same changes as C.
Okay, so starting from here again:...
Expand Python Search Path to Other Source
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I know this thread is a bit old, but it took me some time to get to the heart of this, so I wanted to share.
In my project, I had the main script in a parent directory, and, to differentiate the modules, I put all the supportin...
How to find issues that at some point has been assigned to you?
...ively in our project, but I often have a hard time finding issues, that I know, I have been working on earlier. Usually, if some case is reported, that seems familiar to something I have been working on in the past, but I don't remember exactly what and when.
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CSS transition effect makes image blurry / moves image 1px, in Chrome?
... (counter-)clockwise.
Translate Z-axis to always have a zero value.
Chrome now handles backface-visibility and transform without the -webkit- prefix. I currently don't know how this affects other browsers rendering (FF, IE), so use the non-prefixed versions with caution.
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