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Testing if object is of generic type in C#
...his checks the exact type equivalence. Returning false doesn't necessarily mean list is List<T> returns false (i.e. the object cannot be assigned to a List<T> variable).
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How to create the perfect OOP application [closed]
Recently I was trying for a company ‘x’. They sent me some set of questions and told me to solve only one.
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
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How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...Which gives you descriptions of all TTY devices known to the system. A trimmed down example:
# ll /sys/class/tty/ttyUSB*
lrwxrwxrwx 1 root root 0 2012-03-28 20:43 /sys/class/tty/ttyUSB0 -> ../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/ttyUSB0/tty/ttyUSB0/
lrwxrwxrwx 1 root root ...
Verify a certificate chain using openssl verify
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From verify documentation:
If a certificate is found which is its own issuer it is assumed to be the root CA.
In other words, root CA needs to self signed for verify to work. This is why your second command didn't work. Try this instead:
o...
Comparing Java enum members: == or equals()?
...compiled to classes with private constructors and a bunch of public static members. When comparing two members of a given enum, I've always used .equals() , e.g.
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How to change past commit to include a missed file?
...ase --interactive HEAD~4 and set edit option for the commit you'd like to amend.
Remember that you should not modify commits pushed to the remote repository this way. It's better to add a new commit with missing file in that case.
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Effect of NOLOCK hint in SELECT statements
...lect.
Why would this be?
NOLOCK typically (depending on your DB engine) means give me your data, and I don't care what state it is in, and don't bother holding it still while you read from it. It is all at once faster, less resource-intensive, and very very dangerous.
You should be warned to ne...
How to print to console in pytest?
I'm trying to use TDD (test-driven development) with pytest .
pytest will not print to the console when I use print .
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How to send POST request in JSON using HTTPClient in Android?
...dge in general. I know there are plenty of examples out there but could someone point me to an actual tutorial? I'm looking for a step by step process with code and explanation of why you do each step, or of what that step does. It doesn't need to be a complicated, simple will suffice.
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