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How can I default a parameter to Guid.Empty in C#?
...n you are getting the error is because Empty is defined as:
public static readonly Guid Empty;
So, it is a variable, not a constant (defined as static readonly not as const). Compiler can only have compiler-known values as method parameters default values (not runtime-only-known).
The root cause...
When to dispose CancellationTokenSource?
...TokenSource was the problem.
My project has a service, that is constantly reading database and fires off different tasks, and I was passing linked cancellation tokens to my workers, so even after they had finished processing data, cancellation tokens weren't disposed, which caused a memory leak.
M...
How to redirect output of an entire shell script within the script itself?
...t”) always exports the battery history to /sdcard/bmw_history.txt . If already exists, guess what, OVERWRITE! This made me accidentially lose some battery history. I set the limit in days from 30 to a very high number, which invalidated it and put it back to 30. I wanted to export the current batt...
When should I use perror(“…”) and fprintf(stderr, “…”)?
Reading the man pages and some code did not really help me in
understanding the difference between - or better, when I should use - perror("...") or fprintf(stderr, "...") .
...
CURL to access a page that requires a login from a different page
...curl --user user:pass --cookie-jar ./somefile https://xyz.com/a
and then read them back in when running the second:
curl --cookie ./somefile https://xyz.com/b
Alternatively you can try downloading both files in the same command, which I think will use the same cookies.
...
Should I learn C before learning C++? [closed]
...to C++, but C is a lot smaller and easier to learn.
Pick up K&R and read through that. It is short and will give you a sufficient sense of the language. Once you have the basics of pointers and function calls down, you can move on to C++ a little easier.
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What is the difference between null and undefined in JavaScript?
...g. that is to say they will throw an exception. With WSH you will see the dreaded "'varname' is null or not an object" and that's if you're lucky (but that's a topic for another article).
You can explicitely set a variable to be undefined, but I highly advise against it. I recommend only setting va...
How do I make the method return type generic?
... But the original question isn't asking about type safety. The way I read it the asker just wants to know if there is a way to leverage generics to avoid having to cast.
– laz
Jul 9 '13 at 3:46
...
Why is “using namespace std;” considered bad practice?
... few more weeks most of us even agreed that it actually made the code more readable. There's a reason for that: Whether you like shorter or longer prose is subjective, but the prefixes objectively add clarity to the code. Not only the compiler, but you, too, find it easier to see which identifier is...
adding noise to a signal in python
... keep in mind that P is average power.
Or in dB:
[2]
In this case, we already have a signal and we want to generate noise to give us a desired SNR.
While noise can come in different flavors depending on what you are modeling, a good start (especially for this radio telescope example) is Additive...