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What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...754 compatible. If C++ required IEE754 compliance, compilers would need to test and handle the case where the RHS is zero via an explicit check. By making the behaviour undefined, the compiler can avoid that overhead by saying "if you use a non IEE754 FPU, you won't get IEEE754 FPU behaviour".
...
REST API Best practices: Where to put parameters? [closed]
...
The 404 error test helps me a lot to avoid putting information into the path that belongs in query parameters, headers, or the request body. Thanks for point that out!
– Kevin Condon
Dec 17 '14 at 15:...
How to provide user name and password when connecting to a network share
...
@Breeze - I haven't tested it, but I'd expect it authenticate for the logon session; so if your program is running as the logged on user, they'd have access as well (at least for the duration of the operation).
– Mark Brack...
Advantages of stateless programming?
...ise.
But efficiency is not the only concern. A pure function is easier to test and debug since anything that affects it is explicitly stated. And when programming in a functional language, one gets in the habit of making as few functions "dirty" (with I/O, etc.) as possible. Separating out the stat...
Erasing elements from a vector
...ex access,
To avoid O(n^2) complexity
you can use two indices, i - current testing index, j - index to
store next item and at the end of the cycle new size of the vector.
code:
void erase(std::vector<int>& v, int num)
{
size_t j = 0;
for (size_t i = 0; i < v.size(); ++i) {
if...
Explain Morris inorder tree traversal without using stacks or recursion
... break
pre = pre.right
#And now for some tests. Try "pip3 install binarytree" to get the needed package which will visually display random binary trees
import binarytree as b
for _ in range(10):
print()
print("Example #",_)
tree=b.tree()
print(tree)
...
Deserialize JSON to ArrayList using Jackson
...
This works for me.
@Test
public void cloneTest() {
List<Part> parts = new ArrayList<Part>();
Part part1 = new Part(1);
parts.add(part1);
Part part2 = new Part(2);
parts.add(part2);
try {
ObjectMapper o...
How to make inline functions in C#
... creating an anonymous function.
Here's some really simple code I used to test this (VS2015):
static void Main(string[] args)
{
Func<int, int> incr = a => a + 1;
Console.WriteLine($"P1 = {incr(5)}");
}
What does the compiler generate? I used a nifty tool cal...
What is a memory fence?
... locking primitives from your compiler or standard library; these are well tested, should have all the necessary memory barriers in place, and are probably quite optimized (optimizing locking primitives is tricky; even the experts can get them wrong sometimes).
...
Grouped LIMIT in PostgreSQL: show the first N rows for each group?
...der by t_outer.section_id;
It might be faster but, of course, you should test performance specifically on your data and use case.
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