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MongoDb query condition on comparing 2 fields
... operators, rather than JavaScript evaluations with $where, which can slow down the query:
db.T.aggregate([
{
"$redact": {
"$cond": [
{ "$gt": [ "$Grade1", "$Grade2" ] },
"$$KEEP",
"$$PRUNE"
]
}
}
])
w...
Which is better option to use for dividing an integer number by 2?
... While the definition of / is implementation (does if round up or down for negative numbers) defined in early C standards. It must always be consistent with % (modulo/remainder operator).
– ctrl-alt-delor
May 21 '12 at 11:42
...
CSS text-decoration underline color [duplicate]
...border. Visually, when you use border-bottom, this places the line further down than if you use text-decoration. You can clearly see the difference if you're trying this in text with multiple lines (like I'm doing now, and how I ended up on this SO question).
– Pamela
...
ASP.NET MVC: No parameterless constructor defined for this object
...ork ' book. On page 132, in accordance with the author's recommendation, I downloaded the ASP.NET MVC Futures assembly, and added it to my MVC project. [Note: This could be a red herring.]
...
Moment.js - how do I get the number of years since a date, not rounded up?
... From the docs, since 2.0.0, moment#diff will return number rounded down, so you only need to : age = moment().diff(birthDate, 'years') .
– SuperSkunk
May 28 '13 at 21:47
...
What does 'var that = this;' mean in JavaScript?
...misleading. But if, as Crockford says, it's a convention, is it wise to go down that route. I totally agree with you though, makes much more sense.
– El Ronnoco
Feb 3 '11 at 14:59
...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
...e-C code (no C++ yet) on Mac OS X 10.5. It's trivial to install and use:
Download the latest version from this page.
From the command-line, cd to your project directory.
Execute scan-build -k -V xcodebuild.
(There are some additional constraints etc., in particular you should analyze a project i...
How to animate the change of image in an UIImageView?
...llSelectionAccessoryViewPlusIcon
}
The GIF example below is a bit slowed down, the actual animation happens faster:
share
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...
ListView addHeaderView causes position to increase by one?
...
Does not work for me. AdapterView also just passes down to the listAdapter added. return (adapter == null || position < 0) ? null : adapter.getItem(position);
– philipp
Feb 26 '15 at 2:53
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Advantages of Antlr (versus say, lex/yacc/bison) [closed]
..., I think that LALR grammars are a lot easier to construct and debug. The downside is you have to deal with somewhat cryptic errors like shift-reduce and (the dreaded) reduce-reduce. These are errors that Bison catches when generating the parser, so it doesn't affect the end-user experience, but i...