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How can I select rows with most recent timestamp for each key value?
I have a table of sensor data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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How to avoid “too many parameters” problem in API design?
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Is there a zip-like function that pads to longest length in Python?
Is there a built-in function that works like zip() but that will pad the results so that the length of the resultant list is the length of the longest input rather than the shortest input?
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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
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[Serializable]
public class ConfigurationMissingException : ConfigurationErrorsException
{}
EDIT: Writing your own exception in this case carries the added benefit of guaranteeing that there will never be any confusion regarding where the exception is coming from- the framework, or your applica...
Collection was modified; enumeration operation may not execute
I can't get to the bottom of this error, because when the debugger is attached, it does not seem to occur.
15 Answers
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Take the content of a list and append it to another list
I am trying to understand if it makes sense to take the content of a list and append it to another list.
7 Answers
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How does the algorithm to color the song list in iTunes 11 work? [closed]
...ematica given the album cover as input:
How I did it
Through trial and error, I came up with an algorithm that works on ~80% of the albums with which I've tested it.
Color Differences
The bulk of the algorithm deals with finding the dominant color of an image. A prerequisite to finding domina...
What are queues in jQuery?
I found the jQuery.com document on queue() / dequeue() is too simple to understand. What exactly are queues in jQuery? How should I use them?
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What is the difference between static func and class func in Swift?
...atic func myFunc() instead of class func myFunc you will get the following error l: cannot override static method. Why? Because it's as if its been marked with final. For more information. See nextD's answer below. Also x.dynamicType has now been replaced with type(of:x)
– Hone...