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SQL to find the number of distinct values in a column
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can you expand this example to distinct on multiple columns?
– eugene
Mar 5 '15 at 6:41
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Grab a segment of an array in Java without creating a new array on heap
... of an array. An example would be to get the byte array containing the 4th and 5th bytes of a byte array. I don't want to have to create a new byte array in the heap memory just to do that. Right now I have the following code:
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Differences between socket.io and websockets
What are the differences between socket.io and websockets in
node.js?
Are they both server push technologies?
The only differences I felt was,
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Filtering for empty or NULL names in a queryset
...e.objects.exclude(alias__isnull=True)
If you need to exclude null values and empty strings, the preferred way to do so is to chain together the conditions like so:
Name.objects.exclude(alias__isnull=True).exclude(alias__exact='')
Chaining these methods together basically checks each condition i...
How to use underscore.js as a template engine?
...'m trying to learn about new usages of javascript as a serverside language and as a functional language. Few days ago I heard about node.js and express framework. Then I saw about underscore.js as a set of utility functions. I saw this question on stackoverflow
. It says we can use underscore.js a...
convert ArrayList to JSONArray
...thin an ArrayAdapter for a ListView. I need to take the items in the list and convert them to a JSONArray to send to an API. I've searched around, but haven't found anything that explains how this might work, any help would be appreciated.
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Dictionary text file [closed]
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@Tom Yeah, www.FreeBSD.org (install FreeBSD somewhere and boom, you have it). Otherwise I think this list is similar: raw.githubusercontent.com/eneko/data-repository/master/data/….
– Greg Schmit
Apr 8 '17 at 23:09
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Why is subtracting these two times (in 1927) giving a strange result?
...ng program, which parses two date strings referencing times 1 second apart and compares them:
10 Answers
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Removing an item from a select box
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If you need to remove an option and select another: $('#selectBox').val('option2').find('option[value="option1"]').remove();
– Radu Maris
Feb 8 '12 at 9:35
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Why call git branch --unset-upstream to fixup?
...topress is not under any development since 2011, it serves my purpose well and so I haven't thought of changing anything so far.
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