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How do I return the response from an asynchronous call?
...e versions support async/await. You can also support older environments by transforming your code to ES5 with the help of regenerator (or tools that use regenerator, such as Babel).
Let functions accept callbacks
A callback is simply a function passed to another function. That other function can ca...
Polymorphism in C++
... 1.1;
} }
But, consider that we can transform the first version into a template:
template <typename Amount>
void f()
{
Amount x = 13;
x /= 2;
std::cout << x * 1.1;
}
It's due to those little "convenience features" that it can be so ea...
When to use volatile with multi threading?
...e result is not reachable if we enter the loop).
// Optimizing compilers transform the loop into asm like this
if (!exit_now) { // check once before entering loop
while(1) do_stuff; // infinite loop
}
Multithreading program stuck in optimized mode but runs normally in -O0...
What exactly does git's “rebase --preserve-merges” do (and why?)
...he patches to be rebased, create a
pseudo todo list for further editing, transform the result into a real
todo list (making heavy use of the exec command to "implement" the
missing todo list commands) and finally recreate the patch series on
top of the new base commit.
(The Git garden shea...
Maximum single-sell profit
...roblem by taking the profit or loss between consecutive days. So you would transform a list of stock prices, e.g. [5, 6, 7, 4, 2] into a list of gains/losses, e.g., [1, 1, -3, -2]. The subsequence sum problem is then pretty easy to solve: Find the subsequence with largest sum of elements in an array...
What are the underlying data structures used for Redis?
...is in a "computational" manner, when you have data and you want to perform transformations on that data to obtain some output.
Small sets are encoded in a very efficient way.
Hashes
Hashes are the perfect data structure to represent objects, composed of fields and values. Fields of hashes can als...
Call a Server-side Method on a Resource in a RESTful Way
...statelessness, caching, or layering, it's not hard to make the appropriate transformations. See http://blog.perfectapi.com/2012/opinionated-rpc-apis-vs-restful-apis/ for an example.
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data.table vs dplyr: can one do something well the other can't or does poorly?
... and the relational algebra behind it, which is all about the tabular data transformation. @Arun you should note that set operators are very easy do-able by wrapping data.table function and of course brings significant speedup.
– jangorecki
Jan 14 '15 at 19:33
...
How do I pass a unique_ptr argument to a constructor or a function?
...elf always passes unique_ptr values by rvalue reference (for instance when transforming them into shared_ptr). The rationale for that might be that it is slightly more efficient (no moving to temporary pointers is done) while it gives the exact same rights to the caller (may pass rvalues, or lvalues...
App Inventor 2 扩展 · App Inventor 2 中文网
...ained in How to Build App Inventor from the MIT sources. Later, when you transform you component to an extension, you do not need a special companion, but can use the ordinary companion, e.g., from the Play Store. (Part of the extension “magic” is that is that the required code for the extensi...