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List comprehension rebinds names even after scope of comprehension. Is this right?
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Also note that now in 2.7, set and dictionary comprehensions (and generators) have private scopes, but list comprehensions still don't. While this makes some sense in that the former were all back-ported from Python 3, it really makes the c...
EC2 instance has no public DNS
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The section containing VPCs is now called Networking. And to edit, you right-click on the VPC.
– nasch
May 20 '15 at 19:31
92
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How do I configure git to ignore some files locally?
...ed to use git update-index if you've already made a change to the file and now want it to be ignored. If you change exclude prior to making the change, it's not necessary.
– Brady Emerson
Jun 24 '14 at 0:45
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Understanding repr( ) function in Python
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Can you also let us know some use cases when one should use repr function. I am unable to comprehend that
– gaurav parashar
May 17 '19 at 12:22
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Xcode 4 hangs at “Attaching to (app name)”
...or or iOS device. It was working perfectly in Xcode 3, but all of a sudden now when I press run the program stops at "Attaching to...". There doesn't seem to be any other info to help with this problem either.
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iOS 5 Best Practice (Release/retain?)
...per-file basis. See pixelfreak's answer. So, my advice still stands, but now the 3rd-party libraries shouldn't need to be updated to work with ARC.
Here's what Apple says about opting out of ARC for specific files:
When you migrate a project to use ARC, the -fobjc-arc compiler flag is
set a...
Can you “ignore” a file in Perforce?
... with an explanation of how it works. Then I noticed this answer, which is now superfluous I guess.
Assuming you have a client named "CLIENT", a directory named "foo" (located at your project root), and you wish to ignore all .dll files in that directory tree, you can add the following lines to y...
Practical example where Tuple can be used in .Net 4.0?
...or the last 15 years. That's how expression bodied members were added, and now value tuples. Record-style classes narrowly missed the cut back in August (9 months before this comment) for this version of C# 7, and are probably coming out in C# 8. Also note that value tuples offer value equality wher...
Why can't an anonymous method be assigned to var?
...<T> type that takes a ref anything.
var x2 = y=>123;
We don't know the type of the formal parameter, though we do know the return. (Or do we? Is the return int? long? short? byte?)
var x3 = (int y)=>null;
We don't know the return type, but it can't be void. The return type could be...
How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
... - throw the java.util.concurrent.TimeoutException and kill the process.
Now consider the following scenario:
Application runs along doing its thing.
This is not a user facing application, it runs in the background.
During this background operation, objects are created, used and need to be coll...