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MongoDB with redis
...pped out, Redis is not. If MongoDB triggers some swapping activity, the performance of Redis will be catastrophic. They should be isolated on different nodes.
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Standard alternative to GCC's ##__VA_ARGS__ trick?
..._, "")
I believe it ignores any extra args that aren't referenced in the format string. So you could probably even get away with:
#define BAR_HELPER(fmt, ...) printf(fmt "\n", __VA_ARGS__)
#define BAR(...) BAR_HELPER(__VA_ARGS__, 0)
I can't believe C99 was approved without a standard way to do ...
What does @@variable mean in Ruby?
... 100% as you expect; the article I linked above has plenty of additional information on the subject.
Also keep in mind that, as with most data, you should be extremely careful with class variables in a multithreaded environment, as per dmarkow's comment.
...
How ListView's recycling mechanism works
...y listview is re using the same view, not creating a new for you due to performance optimization.
Important things
1. Never set the layout_height and layout_width of your listview to wrap_content as getView() will force your adapter to get some child for measuring the height of the views to be drawn...
Is it a good practice to use try-except-else in Python?
... I do not like that
kind of programming, as it is using exceptions to perform flow control."
In the Python world, using exceptions for flow control is common and normal.
Even the Python core developers use exceptions for flow-control and that style is heavily baked into the language (i.e. the ...
Is Python strongly typed?
...ly typed language, where types are entirely disjoint and only a controlled form of overloading is possible via type classes.
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mongodb group values by multiple fields
... from the top two "address" entries.
But for my money, stay with the first form and then simply "slice" the elements of the array that are returned to take the first "N" elements.
Demonstration Code
The demonstration code is appropriate for usage with current LTS versions of NodeJS from v8.x and v1...
How can I view the source code for a function?
...nv") for currently available ones.
The output already offers a lot of information. standardGeneric is an indicator of an S4 function. The method to see defined S4 methods is offered helpfully:
> showMethods(chol2inv)
Function: chol2inv (package base)
x="ANY"
x="CHMfactor"
x="denseMatrix"
x="d...
Reading output of a command into an array in Bash
...ggested by Charles Duffy in the comments (thanks!), the following might perform better than the loop method in number 2:
IFS=$'\n' read -r -d '' -a my_array < <( my_command && printf '\0' )
Please make sure you use exactly this form, i.e., make sure you have the following:
IFS=$'\...
git stash blunder: git stash pop and ended up with merge conflicts
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