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Ways to implement data versioning in MongoDB
... approach would be to store diffs. Because the display of these diffs is really a special action, I would put the diffs in a different "history" collection.
I would use the different collection to save memory space. You generally don't want a full history for a simple query. So by keeping the histo...
Heroku NodeJS http to https ssl forced redirect
... to the accepted answer above, but:
Ensures you use "app.use" (for all actions, not just get)
Explicitly externalises the forceSsl logic into a declared function
Does not use '*' with "app.use" - this actually failed when I
tested it.
Here, I only want SSL in production. (Change as ...
How do you fade in/out a background color using jquery?
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If you want to specifically animate the background color of an element, I believe you need to include jQueryUI framework. Then you can do:
$('#myElement').animate({backgroundColor: '#FF0000'}, 'slow');
jQueryUI has some built-in effects that may...
How To Capture A Minidump: Let Me Count The Ways - C/C++ - 清泛网 - 专注C/C++及内核技术
...uo;t complete unless it produced a minidump. I thought I’d throw out all the ways I know off the top of my head. Of course, I’m sure there are other ways so please add them in the comments!
Note: I’m only using Windows 7 and Server 2008 R2 these days so some of these might not wor...
Determine whether an array contains a value [duplicate]
... }
return index;
};
}
return indexOf.call(this, needle) > -1;
};
You can use it like this:
var myArray = [0,1,2],
needle = 1,
index = contains.call(myArray, needle); // true
CodePen validation/usage
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Python Process Pool non-daemonic?
...to create a python Pool that is non-daemonic? I want a pool to be able to call a function that has another pool inside.
8 A...
How do I PHP-unserialize a jQuery-serialized form?
.... You do indeed need to parse the string that serialize returns. See the really popular answer below.
– Isaac Lubow
Mar 1 '19 at 2:17
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Difference between dispatch_async and dispatch_sync on serial queue?
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I do mean serial execution. In point of view that all tasks are executed serial regards to other tasks in the same queue. Of cause it still can be concurrent regards to other queues. It is the whole point of GCD that tasks can be dispatched and executed concurrently.
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What does Python's eval() do?
...less until you find a need for it. It is used on sites like codepad.org to allow you to execute scripts in a test environment. eval() can also be used to execute highly-dynamic code, but you should make yourself fully aware of the security and performance risks before using it.
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What’s the best way to check if a file exists in C++? (cross platform)
...his using standard c++ libs? Preferably without trying to open the file at all.
10 Answers
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