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JavaScript: Check if mouse button down?
...ks more than one button intentionally or accidentally. Don't ask me how I know :-(.
The correct code should be like that:
var mouseDown = 0;
document.body.onmousedown = function() {
++mouseDown;
}
document.body.onmouseup = function() {
--mouseDown;
}
With the test like this:
if(mouseDown){...
What is a callback function?
... somewhere you can get to it
Execution comes back to where it was in [1]
Now suppose factorial took a really long time, because you're giving it huge numbers and it needs to run on some supercomputing cluster somwhere. Let's say you expect it to take 5 minutes to return your result. You could:
K...
How to do a git diff on moved/renamed file?
I moved a file using git mv . Now I would like to do a diff on the new file to compare it with the old file (with the old, now non-existent name).
...
Remove specific commit
... rebase, and there are no straightforward examples, and the docs assume I know more than I do.
11 Answers
...
400 vs 422 response to POST of data
...
400 Bad Request would now seem to be the best HTTP/1.1 status code for your use case.
At the time of your question (and my original answer), RFC 7231 was not a thing; at which point I objected to 400 Bad Request because RFC 2616 said (with emphas...
How can I make the tabs work normally on Xcode 4?
...
UPDATE for 2020:
Finally, almost 10 years later, Xcode 12 beta 3 now appears to mostly resolve the issue described here. There is a new Navigation Style option in the Navigation settings panel that controls this behavior.
Of course, this may change in subsequent betas or the final release ...
Issue with virtualenv - cannot activate
...cannot.
It might just be syntax or folder location, but I am stumped right now.
21 Answers
...
Forward declaring an enum in C++
...
The reason the enum can't be forward declared is that without knowing the values, the compiler can't know the storage required for the enum variable. C++ Compiler's are allowed to specify the actual storage space based on the size necessary to contain all the values specified. If all t...
node.js fs.readdir recursive directory search
... yield res;
}
}
}
Usage has changed because the return type is now an async iterator instead of a promise
(async () => {
for await (const f of getFiles('.')) {
console.log(f);
}
})()
In case somebody is interested, I've written more about async iterators here: https://qwtel.c...
Should 'using' directives be inside or outside the namespace?
...c void Bar()
{
double d = Math.PI;
}
}
}
Now imagine that someone adds another file (File2.cs) to the project that looks like this:
// File2.cs
namespace Outer
{
class Math
{
}
}
The compiler searches Outer before looking at those using directives out...