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Is null check needed before calling instanceof?
... was part of Java 1.0, released almost 20 years ago. Changing the behavior now in a way that would break existing code is unlikely, absent some benefit that outweighs that huge cost. Twenty years ago, maybe there could have been arguments for returning true iff the argument could be cast, or throwin...
What's the purpose of git-mv?
... in parallel. At some point if we want to merge the projects how will git know that it's the same file just renamed it's path? (if "git mv" == "git add + git rm")
– Rose
Dec 27 '12 at 0:22
...
Aren't Python strings immutable? Then why does a + “ ” + b work?
...able, a, which points to the string, is mutable.
Consider:
a = "Foo"
# a now points to "Foo"
b = a
# b points to the same "Foo" that a points to
a = a + a
# a points to the new string "FooFoo", but b still points to the old "Foo"
print a
print b
# Outputs:
# FooFoo
# Foo
# Observe that b hasn't...
How can I position my div at the bottom of its container?
...olve every problem. It's incomplete.
Tables aren't cool, but at least for now, they are sometimes the best way to solve a design problem.
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Conditionally start at different places in storyboard from AppDelegate
...roller, and all the associated VCs with tabBar are also designed in VC, so now I have a case, where I want to show walkthrough of my app, So now when my app is first launched, I want to make walkthrough VC as the root VC instead of tabBarcontroller and when my walkthrough finishes , I want to make t...
How fast is D compared to C++?
... @CyberShadow Thanks! With these flags runtime improves considerably. Now D is at 12.9 s. But still runs more than 3 times as long. @Matthieu M. I would not mind to test a program with boundschecking in slow motion and once it is debugged let it do its computations without boundschecking. (I do...
How to have TFS 2010 detect changes done to files outside of Visual Studio?
...work connection available that allows you to check out the files.
If you know what files you've modified, you can just check them out from within Visual Studio, then you'll be able to check them back in.
If you don't know what files you've edited, you can detect the changes by running the tfpt onl...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...mple, for certain operations, Rubinius's Hash class is faster than YARV's. Now, this doesn't sound terribly exciting until you realize that Rubinius's Hash class is implemented in 100% pure Ruby, while YARV's is implemented in 100% hand-optimized C.
So, at least in some cases, Rubinius can generate...
How does __proto__ differ from constructor.prototype?
...sheds full light over the matter
http://i.stack.imgur.com/KFzI3.png
I know I'm not the first one making this up but it was more interesting figuring it out that finding it :-). Anyway, after that I found e.g. this another diagram that I think says basicly the same:
Javascript object layout
The...
Partial Commits with Subversion
...
Tortoise SVN 1.8 now supports this with it's "Restore after commit" feature. This allow you to make edits to a file, with all of the edits being undone after the commit
Per the documentation:
To commit only the parts of the file that rel...