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Explaining Python's '__enter__' and '__exit__'
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If you know what context managers are then you need nothing more to understand __enter__ and __exit__ magic methods. Lets see a very simple example.
In this example I am opening myfile.txt with help of open function. The try/finally...
Why does InetAddress.isReachable return false, when I can ping the IP address?
...am getting failed and using ping I am getting icmp not permitted ? Do you know how to deal with it now ?
– Yuvi
Jan 7 '13 at 8:58
6
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How do I launch the Android emulator from the command line?
...om the terminal. I have successfully created the HelloWorld project and now I'm trying to run it from the command line in the Android emulator. Which command runs the emulator for my HelloWorld project?
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Unable to find specific subclass of NSManagedObject
...ect Subclasses has been
updated accordingly.
The Data Model inspector
has now two fields "Class" and "Module" for an entity:
When you create a Swift managed object subclass for the entity, the
"Module" field is set to "Current Product Module", and with this setting
creating instances works both ...
Visual Studio displaying errors even if projects build
...solution. It displays totally random errors, but the projects build. Right now, I have 33 files with errors, and I can see red squiggly lines in all of them.
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How to select different app.config for several build configurations
...) why this and that variables have such weird values coming seemingly from nowhere.
"Hold on", - you may say, "but I need this for my integration/unit testing, and it is a library!". And that is true and this is what you can do (pick only one, don't mix):
1. SlowCheetah - transforms current config...
In Python, how do you convert a `datetime` object to seconds?
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Python now warns me: "TypeError: can't subtract offset-naive and offset-aware datetimes" What's the best solution to fix that?
– Aaron Ash
Apr 13 '13 at 0:47
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How to run iPhone emulator WITHOUT starting Xcode?
On my old Mac running Snow Leopard, I could type "ios" into spotlight and it would start up the iPhone/iPad emulator by itself.
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AutoMapper: “Ignore the rest”?
...per.CreateMap<sourceModel, destinationModel>(MemberList.Source);
Now the automapper knows that it needs to only validate that all the source fields are mapped but not the other way around.
You can also use:
Mapper.CreateMap<sourceModel, destinationModel>(MemberList.Destination);
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“Inspect” a hover element?
...g others) with the checkbox provided.
If it's not clear at all, let me know and I can add a few screenshots.
Edited: screenshot added.
And finally and as I say at the begining, I only be able to do this if the hover is set with CSS:HOVER... when you control the hover state with jQuery.onMouseOve...