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How to use enums as flags in C++?
...expression HasClaws | CanFly? This is not what enums are for. Use integers and constants.
– Lightness Races in Orbit
Mar 27 '15 at 17:49
27
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jQuery pass more parameters into callback
...ure.
As a more basic example, here is an example function that receives and calls a callback function, as well as an example callback function:
function callbackReceiver(callback) {
callback("Hello World");
}
function callback(value1, value2) {
console.log(value1, value2);
}
This call...
CA2202, how to solve this case
... while the original one does.
In the original code, CryptoStream.Dispose() and MemoryStream().Dispose() are actually called twice (which may or may not be a problem).
The modified code works as follows: references are set to null, as soon as responsibilty for disposing is transferred to another ob...
rails - Devise - Handling - devise_error_messages
...error_messsages! method is just a stub (though it contains implementation) and that we're supposed to override/replace it. It would have been nice if this was pointed out somewhere in the wiki, which is why i guess there are a few people like us that have been guessing.
So I'm going to try reopenin...
Does anyone still use [goto] in C# and if so why? [closed]
I was wondering whether anyone still uses the "goto" keyword syntax in C# and what possible reasons there are for doing so.
...
Push local Git repo to new remote including all branches and tags
I have a local Git repo that I would like to push to a new remote repo (brand new repo set up on Beanstalk, if that matters).
My local repo has a few branches and tags, and I would like to keep all of my history.
...
Why is volatile not considered useful in multithreaded C or C++ programming?
...appens (that the compiler won't just store the value in a register instead and defer updating main memory until much later)
that no reordering takes place. Assume that we use a volatile variable as a flag to indicate whether or not some data is ready to be read. In our code, we simply set the flag a...
NoSQL Use Case Scenarios or WHEN to use NoSQL [closed]
...liable information on when to use this. So I pose the following questions, and I'm sorry if these are really dumb questions in advance:
...
What is the difference between assert, expect and should in Chai?
What is the difference between assert , expect and should , and when to use what?
2 Answers
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Test whether a glob has any matches in bash
...compgen -G "<glob-pattern>"
Escape the pattern or it'll get pre-expanded into matches.
Exit status is:
1 for no-match,
0 for 'one or more matches'
stdout is a list of files matching the glob.
I think this is the best option in terms of conciseness and minimizing potential side effect...