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What does ':' (colon) do in JavaScript?
I'm learning JavaScript and while browsing through the jQuery library I see : (colon) being used a lot. What is this used for in JavaScript?
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Use ASP.NET MVC validation with jquery ajax?
...escription field is required."]
}]
This would be returned to your error handling callback of the $.ajax call
You can loop through the returned data to set the error messages as needed based on the Keys returned (I think something like $('input[name="' + err.key + '"]') would find your input eleme...
creating list of objects in Javascript
...ing: 5, id: 20053 },
{ date: '14/1/2011', reading: 6, id: 45652 }
];
and then access it:
alert(list[1].date);
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How can I select all elements without a given class in jQuery?
... answered Mar 15 '10 at 15:02
Andre BacklundAndre Backlund
6,30533 gold badges1717 silver badges2727 bronze badges
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Intelligent way of removing items from a List while enumerating in C#
...est method might be to just keep track of the elements you want to remove, and then remove them all at once after. Something like this:
List<int> toRemove = new List<int>();
foreach (var elem in myList)
{
// Do some stuff
// Check for removal
if (needToRemoveAnElement)
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Pairs from single list
...ed to process a list by pairs. I was wondering which would be the pythonic and efficient way to do it, and found this on Google:
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Collapsing Sidebar with Bootstrap
I just visited this page http://www.elmastudio.de/ and wondered if it is possible to build the left sidebar collapse with Bootstrap 3.
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Is there a way to give a specific file name when saving a file via cURL?
I am pulling files using curl in the mac OS X terminal and want to give them different names. Is there a way to specify a name, such as a "save as" function when using curl?
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grep without showing path/file:line
How do you grep and only return the matching line? i.e. The path/filename is omitted from the results.
3 Answers
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mongodb count num of distinct values per field/key
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MongoDB has a distinct command which returns an array of distinct values for a field; you can check the length of the array for a count.
There is a shell db.collection.distinct() helper as well:
> db.countries.distinct('country');
[ "Spain", "Engl...