大约有 4,300 项符合查询结果（耗时：0.0257秒） [XML]
Most simple but complete CMake example
...example add some compiler flags
target_compile_options(example PUBLIC -std=c++1y -Wall -Wfloat-conversion)
# this lets me include files relative to the root src dir with a <> pair
target_include_directories(example PUBLIC src/main)
# this copies all resource files in the build directory
# we...
C dynamically growing array
...no built-in dynamic array in C, you'll just have to write one yourself. In C++, you can use the built-in std::vector class. C# and just about every other high-level language also have some similar class that manages dynamic arrays for you.
If you do plan to write your own, here's something to get yo...
Is a statically-typed full Lisp variant possible?
.... For example, it's not at all comparable to a statically typed list, like C++'s std::list or Haskell's list. Those are single-dimensional linked lists where all the cells are of the same type. Lisp happily allows (1 "abc" #\d 'foo). Plus, even if you extend your static-typed lists to cover lists-of...
How should one use std::optional?
...nd how does it compensate for what was not found in the previous Standard (C++11).
4 Answers
...
How to determine the longest increasing subsequence using dynamic programming?
...
The following C++ implementation includes also some code that builds the actual longest increasing subsequence using an array called prev.
std::vector<int> longest_increasing_subsequence (const std::vector<int>& s)
{
i...
In C#, What is a monad?
...te by Oliver Steele, trying to relate Monads to operator overloading à la C++ or C#: Monads allow you to overload the ';' operator.
– Jörg W Mittag
Mar 23 '09 at 22:12
7
...
Seeking clarification on apparent contradictions regarding weakly typed languages
...o realise that languages such as Java and C# (and to a certain extent also C++) have a type system that is ensured twice: once at compile time, and once at runtime. void* breaks through both type checks. Generic type erasure doesn’t, it only circumvents the compile-time checks. It’s exactly like...
Map vs Object in JavaScript
... better choice.
This is because javascript engines compile objects down to C++ classes in the background. These classes are cached, so when you make a new object with the same exact properties the engine will reuse an existing background class. The access path for properties on these classes is very...
What are some (concrete) use-cases for metaclasses?
...ers and passing it as the first argument to its functions. A person seeing C++ for the first time might say, "what is this magic? Why is the compiler implicitly passing this to methods, but not to regular and static functions? It's better to be explicit and verbose about your arguments". But then, o...
Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
...ing when I do micro-optimizations (unrelated to stack
alignment) on C or C++ source codes?
Simply by telling gcc to do the right alignment:
g++ -O2 -falign-functions=16 -falign-loops=16
Long answer:
The code will run slower if:
an XX byte boundary cuts add() in the middle (XX being machin...