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mongodb count num of distinct values per field/key
...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", "England", "France", "Australia" ]
> db.countries.distinct('country').le...
“Invalid JSON primitive” in Ajax processing
...ion.JavaScriptSerializer.serialize(obj);?
If it is a valid json object like {'foo':'foovalue', 'bar':'barvalue'} then jQuery might not send it as json data but instead serialize it to foor=foovalue&bar=barvalue thus you get the error "Invalid JSON primitive: foo"
Try instead setting the data ...
val() doesn't trigger change() in jQuery [duplicate]
...ent on a text box when I change its value with a button, but it doesn't work. Check this fiddle .
9 Answers
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How to stop an animation (cancel() does not work)
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CommonsWareCommonsWare
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How to verify multiple method calls with different params
...rther reading has led me to try using ArgumentCaptors and the following works, although much more verbose than I would like.
ArgumentCaptor<String> argument = ArgumentCaptor.forClass(String.class);
verify(errors, atLeastOnce()).add(argument.capture(), any(ActionMessage.class));
List<Stri...
How to tell if node.js is installed or not
...ns. What does one really need to do? I wanted to see if it was actually working. So I executed a script called hello.js. It went as such:
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throw checked Exceptions from mocks with Mockito
I'm trying to have one of my mocked objects throw a checked Exception when a particular method is called. I'm trying the following.
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How might I convert a double to the nearest integer value?
... answered Mar 11 '09 at 4:33
nickfnickf
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How to remove non-alphanumeric characters?
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Sounds like you almost knew what you wanted to do already, you basically defined it as a regex.
preg_replace("/[^A-Za-z0-9 ]/", '', $string);
share
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How do I use ROW_NUMBER()?
...ROM myTable
to get the count.
And for the second question, the primary key of the row is what should be used to identify a particular row. Don't try and use the row number for that.
If you returned Row_Number() in your main query,
SELECT ROW_NUMBER() OVER (Order by Id) AS RowNumber, Field1,...