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What's the difference between findAndModify and update in MongoDB?
... do I need to return the item first? I read the MongoDB: the definitive guide and it says that it is handy for manipulating queues and performing other operations that need get-and-set style atomicity. But I didn't understand how it achieves this. Can somebody explain this to me?
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HTML5shiv vs Dean Edwards IE7-js vs Modernizr - which to choose?
...onality to IE.
As far as I'm aware there's no cross-over between them (aside from html5shiv/modernizr), so you can use any combination of them, depending on what features you need to implement.
While I'm on the subject, and since you're asking about tools to make IE more compatible with other bro...
Using {} in a case statement. Why?
...
The {} denotes a new block of scope.
Consider the following very contrived example:
switch (a)
{
case 42:
int x = GetSomeValue();
return a * x;
case 1337:
int x = GetSomeOtherValue(); //ERROR
return a * x;
}
You will get a ...
Better way of getting time in milliseconds in javascript?
...t likely due to garbage collection. Typically garbage collection can be avoided by reusing variables as much as possible, but I can't say specifically what methods you can use to reduce garbage collection pauses.
share
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Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...oo) is implicitly convertible to a pointer to the function. This is why void (*p1_foo)() = foo; works: foo is implicitly converted into a pointer to itself and that pointer is assigned to p1_foo.
The unary &, when applied to a function, yields a pointer to the function, just like it yields th...
Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
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Also a common problem is something like that client side app crashing and leaving connections open and then opening new ones when it restarts. If this kind of thing happens a lot then you'll run out of connections. Or the app is just configured improperly and opens too many c...
Apply CSS styles to an element depending on its child elements
...f you could do something like div[div.a] or div:containing[div.a] as you said, but this isn't possible.
You may want to consider looking at jQuery. Its selectors work very well with 'containing' types. You can select the div, based on its child contents and then apply a CSS class to the parent all...
Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...ou're issuing a lot of small function calls, a thread pool might be a good idea.
It's quite apparent that the standard C++ library that ships with g++ doesn't have thread pools. But I can definitely see a case for them. Even with the overhead of having to shove the call through some kind of inter-t...
Modify file in place (same dest) using Gulp.js and a globbing pattern
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This didn't work for me. I had to do gulp.src("dist/**/*") ... gulp.dest("./")
– niftygrifty
Feb 9 '15 at 1:09
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Inheritance and Overriding __init__ in python
...elf), actually, but nothing's wrong with it - the super(...) call just provides a more consistent syntax. (I'm not sure how it works for multiple inheritance, I think it may only find one superclass init)
– David Z
Apr 15 '09 at 21:47
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