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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
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I solved it with my own function. If you want to update specified field in document you need to address it clearly.
Example:
{
_id : ...,
some_key: {
param1 : "val1",
param2 : "val2",
param3 : "val3"
}
}...
git: diff between file in local repo and origin
I want to find the differences between a file I have in my local repo vs what is in the origin master .
7 Answers
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JavaScript: How to pass object by value?
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+1, I was going to suggest Object.create in my answer too, but I didn't want to stretch to explaining the shallowness of the copy ;-)
– Andy E
Sep 27 '11 at 18:52
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How to properly add include directories with CMake
...ER_FILES ${YOUR_DIRECTORY}/file1.h ${YOUR_DIRECTORY}/file2.h)
add_library(mylib libsrc.cpp ${HEADER_FILES})
target_include_directories(mylib PRIVATE ${YOUR_DIRECTORY})
add_executable(myexec execfile.cpp ${HEADER_FILES})
target_include_directories(myexec PRIVATE ${YOUR_DIRECTORY})
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Getting back old copy paste behaviour in tmux, with mouse
...ts: it lets me scroll. Is there a combination of settings that lets me use my terminal like a normal darn terminal? Copy/paste and scroll included?
– Mihai Danila
Aug 12 '16 at 22:44
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Callback functions in C++
...on callback is -in analogy to function pointers- quite simple as well:
C my_c{2}; // aggregate initialization
int a = 5;
int b = C_foobar(a, my_c, &C::foo); // call C_foobar with pointer to foo as its callback
3. std::function objects (header <functional>)
The std::function class is...
Polymorphism in C++
...tures-and-implications contrasting of the polymorphic mechanisms. Anyway, my understanding is that the formal academic exclusively-C++-focused meaning may be narrow, but the formal academic general Comp. Sci. meaning is not, as evidenced by Stroustrup's glossary. We need something definitive - e.g...
Why does Razor _layout.cshtml have a leading underscore in file name?
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So I just tried this, and IIS on my box doesn't serve any files from the Views, directory. Not even static .html files. So I really don't think this is the answer.
– richb
Jan 2 '11 at 1:08
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What is your favorite C programming trick? [closed]
...e then, a new world of creative use of the preprocessor opened in front of my eyes. I no longer include just headers, but entire chunks of code now and then (it improves reusability a lot) :-p
Thanks John Carmack! xD
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Count the number of occurrences of a character in a string in Javascript
...e str
(mainStr.split("str").length - 1) //4
Both in @Lo's answer and in my own silly jsperf test split comes ahead in speed, at least in Chrome, but again creating the extra array just doesn't seem sane.
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