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Distinct by property of class with LINQ [duplicate]

... You can use grouping, and get the first car from each group: List<Car> distinct = cars .GroupBy(car => car.CarCode) .Select(g => g.First()) .ToList(); ...
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How to list all Git tags?

In my repository, I have created tags using the following commands. 10 Answers 10 ...
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开源MQTT网关:EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区,为创新赋能!

引言物联网开发者需要为自己的物联网项目选择合适的 MQTT 消息产品或服务,从而构建可靠高效的基础数据层,保障上层物联网业务。目前市面上有很多开源的 MQTT 产品,在性能功能等方面各有优点。本文将选取目前最为流行的...
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Declaring pointers; asterisk on the left or right of the space between the type and name? [duplicate

I've seen mixed versions of this in a lot of code. (This applies to C and C++, by the way.) People seem to declare pointers in one of two ways, and I have no idea which one is correct, of if it even matters. ...
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How to assign bean's property an Enum value in Spring config file?

I have a standalone enum type defined, something like this: 9 Answers 9 ...
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Converting XML to JSON using Python?

I've seen a fair share of ungainly XML->JSON code on the web, and having interacted with Stack's users for a bit, I'm convinced that this crowd can help more than the first few pages of Google results can. ...
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Is there a common Java utility to break a list into batches?

...s [[a, b, c], [d, e]] -- an outer list containing two inner lists of three and two elements, all in the original order. share | improve this answer | follow |...
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Batch files: How to read a file?

... You can use the for command: FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k Type for /? at the command prompt. Also, you can parse ini files! ...
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Using module 'subprocess' with timeout

Here's the Python code to run an arbitrary command returning its stdout data, or raise an exception on non-zero exit codes: ...
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Passing a single item as IEnumerable

...ss in a list or an array, then an unscrupulous piece of code could cast it and change the contents, leading to odd behaviour in some situations. You could use a read-only collection, but that's likely to involve even more wrapping. I think your solution is as neat as it gets. ...