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What does |= (single pipe equal) and &=(single ampersand equal) mean
...icit cast, and the target variable is only evaluated once, but that's basically the gist of it.
In terms of the non-compound operators, & is a bitwise "AND" and | is a bitwise "OR".
EDIT: In this case you want Folder.Attributes &= ~FileAttributes.System. To understand why:
~FileAttribute...
GDB corrupted stack frame - How to debug?
...
Those bogus adresses (0x00000002 and the like) are actually PC values, not SP values. Now, when you get this kind of SEGV, with a bogus (very small) PC address, 99% of the time it's due to calling through a bogus function pointer. Note that virtual calls in C++ are implemented ...
Why is i++ not atomic?
... the argument that i++ should have been designed and documented as specifically performing an atomic increment, so that a non-atomic increment is performed using i = i + 1. However, this would break the "cultural compatibility" between Java, and C and C++. As well, it would take away a convenient n...
How do I make a list of data frames?
...to your question, but you want to use = and not <- within the function call. If you use <-, you'll end up creating variables y1 and y2 in whatever environment you're working in:
d1 <- data.frame(y1 <- c(1, 2, 3), y2 <- c(4, 5, 6))
y1
# [1] 1 2 3
y2
# [1] 4 5 6
This won't have the s...
setuptools vs. distutils: why is distutils still a thing?
...
Have a look at this SO question. It explains all the packaging methods very well, and might help answer your question to some extent: Differences between distribute, distutils, setuptools and distutils2?
Distutils is still the standard tool for packaging in Python. ...
Is JavaScript a pass-by-reference or pass-by-value language?
...oduces the output:
10
changed
unchanged
If obj1 was not a reference at all, then changing obj1.item would have no effect on the obj1 outside of the function.
If the argument was a proper reference, then everything would have changed. num would be 100, and obj2.item would read "changed".
Instea...
Is there a way to detect if a browser window is not currently active?
I have JavaScript that is doing activity periodically. When the user is not looking at the site (i.e., the window or tab does not have focus), it'd be nice to not run.
...
How do I measure request and response times at once using cURL?
...me="curl -w \"@$HOME/.curl-format.txt\" -o NUL -s "
Then you can simply call...
curltime wordpress.org
Thanks to commenter Pete Doyle!
Make a Linux/Mac stand-alone script
This script does not require a separate .txt file to contain the formatting.
Create a new file, curltime, somewhere in ...
Java switch statement multiple cases
...ure why a responder said it was not possible. This is fine, and I do this all the time:
switch (variable)
{
case 5:
case 6:
etc.
case 100:
doSomething();
break;
}
share
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...
Best way to compare two complex objects
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Implement IEquatable<T> (typically in conjunction with overriding the inherited Object.Equals and Object.GetHashCode methods) on all your custom types. In the case of composite types, invoke the contained types’ Equals method within the containing types...