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Why can't C# interfaces contain fields?
For example, suppose I want an ICar interface and that all implementations will contain the field Year . Does this mean that every implementation has to separately declare Year ? Wouldn't it be nicer to simply define this in the interface?
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Is there any standard for JSON API response format?
Do standards or best practices exist for structuring JSON responses from an API? Obviously, every application's data is different, so that much I'm not concerned with, but rather the "response boilerplate", if you will. An example of what I mean:
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PostgreSQL: Which Datatype should be used for Currency?
...re currencies, such as Bahrain Dinar, where 1000 sub-units equal one unit, and there are currencies which don't have sub-units at all.
– Nikolay Arhipov
Aug 24 '18 at 5:49
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Real life example, when to use OUTER / CROSS APPLY in SQL
I have been looking at CROSS / OUTER APPLY with a colleague and we're struggling to find real life examples of where to use them.
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Does the join order matter in SQL?
Disregarding performance, will I get the same result from query A and B below? How about C and D?
4 Answers
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Convert float to double without losing precision
I have a primitive float and I need as a primitive double. Simply casting the float to double gives me weird extra precision. For example:
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How to import multiple .csv files at once?
...you have those CSVs in a single directory--your current working directory--and that all of them have the lower-case extension .csv.
If you then want to combine those data frames into a single data frame, see the solutions in other answers using things like do.call(rbind,...), dplyr::bind_rows() or ...
Jenkins Git Plugin: How to build specific tag?
... git plugin to just build that tag. This has been taking 3 hours of my day and I have conceded defeat to the masters at stack overflow.
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Getting root permissions on a file inside of vi? [closed]
Often while editing config files, I'll open one with vi and then when I go to save it realize that I didn't type
10 Answers...
What is the difference between a HashMap and a TreeMap? [duplicate]
...mple of a SortedMap, which means that the order of the keys can be sorted, and when iterating over the keys, you can expect that they will be in order.
HashMap on the other hand, makes no such guarantee. Therefore, when iterating over the keys of a HashMap, you can't be sure what order they will b...