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ggplot with 2 y axes on each side and different scales
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I concur with Andreas - sometimes (such as now, for me) a client wants two sets of data on the same plot, and does not want to hear me talk about Plotting Theory. I either have to convince them to not want that anymore (not always a battle I want to wage), or tell th...
How do I use valgrind to find memory leaks?
...first
gcc -o executable -std=c11 -Wall -ggdb3 main.c # add -ggdb3 to it
Now with this debug build, Valgrind points to the exact line of code
allocating the memory that got leaked! (The wording is important: it might not
be exactly where your leak is, but what got leaked. The trace helps you fin...
What are some uses of template template parameters?
...lustrative, is no longer an amazing example due to c++11 introducing auto. Now the same function can be written as:
template <class Cont>
void f(Cont &v) {
auto temp = v.back();
v.pop_back();
// Do some work on temp
std::cout << temp << std::endl;
}
which i...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...maintain a list of classes that inherit from 'Observer', without actually knowing the concrete type of those classes, this is an instance of loose coupling. The Subject doesn't depend on any of its Observers or their internal concerns. The observers don't depend on the Subject or any of its concerns...
Spring RestTemplate - how to enable full debugging/logging of requests/responses?
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We have been using this technique for about 3 months now. It only works with RestTemplate configured with a BufferingClientHttpResponseWrapper as @sofienezaghdoudi implies. However, it does not work when used in tests using spring's mockServer framework since MockRestServiceS...
How many threads is too many?
...ronment for tuning. It's okay to get an estimate beforehand but you never know what production will throw your way (which is why all these things should be configurable at runtime). This is to catch a situation such as unexpected doubling of the client calls coming in.
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How to increase the vertical split window size in Vim
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This is what I am using as of now:
nnoremap <silent> <Leader>= :exe "resize " . (winheight(0) * 3/2)<CR>
nnoremap <silent> <Leader>- :exe "resize " . (winheight(0) * 2/3)<CR>
nnoremap <silent> <Leader>0 :ex...
Approximate cost to access various caches and main memory?
...ve and not modified -- if it is modified then it is changed to shared; LLC now becomes dirty and it is returned to the requesting core as shared. Maybe I'm wrong -- I know the MOESI protocol is different.
– Lewis Kelsey
Feb 5 '19 at 18:32
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Can you explain the HttpURLConnection connection process?
I am using HTTPURLConnection to connect to a web service. I know how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following:
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What is 'Pattern Matching' in functional languages?
...a functional language, the datatypes that you define are usually what are known as discriminated unions or algebraic data types. For instance, what's a (linked) list? A linked list List of things of some type a is either the empty list Nil or some element of type a Consed onto a List a (a list of...