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Does MongoDB's $in clause guarantee order
...the results
{ "$sort": { "weight": 1 } }
])
So that would be the expanded form. What basically happens here is that just as the array of values is passed to $in you also construct a "nested" $cond statement to test the values and assign an appropriate weight. As that "weight" value reflects t...
What is the difference between and ?
What is the difference between and ?
11 Answers
11
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Java Error opening registry key
I get this error when I try to do anything with Java in command prompt:
14 Answers
14
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Combining INSERT INTO and WITH/CTE
I have a very complex CTE and I would like to insert the result into a physical table.
3 Answers
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What is the difference between functional and non functional requirement? [closed]
What is the difference between functional and non-functional requirements in the context of designing a software system?
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Why does C++ need a separate header file?
...ile with the same functions as in the .cpp file. It makes creating classes and refactoring them very difficult, and it adds unnecessary files to the project. And then there is the problem with having to include header files, but having to explicitly check if it has already been included.
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Extract file basename without path and extension in bash [duplicate]
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You don't have to call the external basename command. Instead, you could use the following commands:
$ s=/the/path/foo.txt
$ echo "${s##*/}"
foo.txt
$ s=${s##*/}
$ echo "${s%.txt}"
foo
$ echo "${s%.*}"
foo
Note that this solution should work in all recent (post 2004) POS...
How do I paste multi-line bash codes into terminal and run it all at once?
...ode into terminal, but whenever I do, each line gets run as a separate command as soon as it gets pasted.
10 Answers
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python pandas dataframe to dictionary
I've a two columns dataframe, and intend to convert it to python dictionary - the first column will be the key and the second will be the value. Thank you in advance.
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Should we pass a shared_ptr by reference or by value?
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This question has been discussed and answered by Scott, Andrei and Herb during Ask Us Anything session at C++ and Beyond 2011. Watch from 4:34 on shared_ptr performance and correctness.
Shortly, there is no reason to pass by value, unless the goal is to sha...