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Exception.Message vs Exception.ToString()
..., containing the exception type, the message (from before), a stack trace, and all of these things again for nested/inner exceptions. More precisely, the method returns the following:
ToString returns a representation of the current exception that is intended to be understood by humans. Where the e...
Func delegate with no return type
... the Action delegates return void.
Func<TResult> takes no arguments and returns TResult:
public delegate TResult Func<TResult>()
Action<T> takes one argument and does not return a value:
public delegate void Action<T>(T obj)
Action is the simplest, 'bare' delegate:
pu...
Specifying column name in a “references” migration
...want to check out the guide I link for more info on migrations in general, and you may even end up putting calling SQL code directly in your migration. I would say ignore it, as it isn't a normal part of rails, you will get 0 performance out of it, as rails' default generated SQL queries take no adv...
What is the difference between a thread and a fiber?
What is the difference between a thread and a fiber? I've heard of fibers from ruby and I've read heard they're available in other languages, could somebody explain to me in simple terms what is the difference between a thread and a fiber.
...
Why are Python's 'private' methods not actually private?
Python gives us the ability to create 'private' methods and variables within a class by prepending double underscores to the name, like this: __myPrivateMethod() . How, then, can one explain this
...
fatal error: malformed or corrupted AST file - Xcode
...e. In Xcode, go to Window->Organizer->Projects, select your project, and press the "Delete..." button next to "Derived data".
If this doesn't work, you can try to do a Product->Clean (Cmd+Shift+k).
share
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Cannot kill Python script with Ctrl-C
...thread, but because your threads aren't in daemon mode, they keep running, and that keeps the process alive. We can make them daemons:
f = FirstThread()
f.daemon = True
f.start()
s = SecondThread()
s.daemon = True
s.start()
But then there's another problem - once the main thread has started your ...
How can I remove all my changes in my SVN working directory?
I have an SVN working directory. I made some changes in that directory, and it shows in svn status . But is there any way for me to remove all my changes in there and just get everything from the trunk using the command line?
...
How can I use UUIDs in SQLAlchemy?
...
The sqlalchemy postgres dialect supports UUID columns. This is easy (and the question is specifically postgres) -- I don't understand why the other answers are all so complicated.
Here is an example:
from sqlalchemy.dialects.postgresql import UUID
from flask_sqlalchemy import SQLAlchemy
impo...
Streaming via RTSP or RTP in HTML5
...er.com/path/to/stream">
Your browser does not support the VIDEO tag and/or RTP streams.
</video>
or maybe
<video src="http://myserver.com:1935/path/to/stream/myPlaylist.m3u8">
Your browser does not support the VIDEO tag and/or RTP streams.
</video>
That said, the imple...