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What is the proper way to re-attach detached objects in Hibernate?
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Persistent objects work great, the dirty flag is set based on the delta between the initial load and the value(s) at flush() time. Detached objects need, and don't currently have this functionality. The way for hibernate to do it is to add an additional hash/id for detached o...
How can I make setuptools install a package that's not on PyPI?
... doesn't actually download and install the package. I'm using a setuptools-based virtualenv if that helps.
– andrei
Aug 18 '10 at 17:31
15
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What are the use cases for selecting CHAR over VARCHAR in SQL?
... the space on average as a VARCHAR that's storing mostly characters in the base multilingual plane.
– Gavin Towey
Mar 17 '14 at 17:40
11
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What is the difference between application server and web server?
...lt back to its client. The web server sends your query directly to the database server (be patient, I will explain this one in our next nugget) and waits for a response. Once received, the web server formulates the response into an HTML file and sends it to your web browser. This back and forth comm...
Error in finding last used cell in Excel with VBA
...does not account for Conditional Formatting. One may have formatted cells, based on formulas, which are not detected by UsedRange or Ctrl+End.
In the figure, the last cell is B3, since formatting was applied explicitly to it. Cells B6:D7 have a format derived from a Conditional Formatting rule, and ...
Exporting functions from a DLL with dllexport
...e stamp Sun Feb 01 19:54:32 2009
0.00 version
1 ordinal base
2 number of functions
2 number of names
ordinal hint RVA name
1 0 0001110E getEngineVersion = @ILT+265(_getEngineVersion)
2 1 00011028 registerPlugin = @ILT+35(_...
PUT vs. POST in REST
...one
Neither is quite right.
Better is to choose between PUT and POST based on idempotence of the action.
PUT implies putting a resource - completely replacing whatever is available at the given URL with a different thing. By definition, a PUT is idempotent. Do it as many times as you like,...
How to “warm-up” Entity Framework? When does it get “cold”?
...won't introduce any lag. But of course this change goes through to the database, so it's not so easy to deal with. Code is more flexible.
Do not use a lot of TPT inheritance (that's a general performance issue in EF). Neither build your inheritance hierarchies too deep nor too wide. Only 2-3 proper...
Generate all permutations of a list without adjacent equal elements
...is fails either for [0, 1, 1] or [0, 0, 1], depending on whether you use 0-based or 1-based indices.
– flornquake
Aug 13 '14 at 13:47
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Simple explanation of MapReduce?
...n a DB software because, with Map\Reduce support you can work with the database without needing to know how the data are stored in a DB to use it, thats what a DB engine is for.
You just need to be able to "tell" the engine what you want by supplying them with either a Map or a Reduce function and ...