SideStep | Yet another AV evasion tool | Security Testing library

First of all, the method used to measure the timings is very imprecise. The current methods introduce a huge bias that is probably bigger than the measure itself. Indeed, clock is not very precise on many platforms (about 1 ms on my machine and often not better than 1 us on almost all platforms). Moreover, the imprecision is strongly amplified by the 10,000,000 iterations. If you want to measure the loop precisely, you need to move the clock call outside the loop (and if possible use a more accurate measurement function).

Still, the main problem is that the function result is unused and the Java JIT can see that and partially optimize that. GCC cannot because of the math function standard behaviour (errno cause a side effect not available in the Java code). You can disable the use of errno using the command-line flag -fno-math-errno. With that GCC can now totally optimize the function (ie. remove the function call) and the resulting time is much smaller. However, the benchmark is flawed and you probably do not want to measure that. If you want to write a correct benchmark, you need to read the computed value. For example, you can compute a checksum, at least to check the results are correct/equivalent.

Your problem is that the latter indexes are way way larger, and Hypothesis is running out of entropy to generate column contents. If you limit the index to at most a few dozen entries, everything should work fine.

We have this soft-cap in order to limit otherwise unbounded recursive structures, so the overall design is working as intended though I acknowledge that in this case it's neither necessary nor desirable.

It looks like p5.Vector.Add can take in a third optional argument:

p5.Vector.add(v1, v2, [target])

In that example it defines target as such:

p5.Vector: the vector to receive the result (Optional)

In your original version you are passing arguments from the reduce function into p5.Vector.Add. However, the third argument for reduce is currentIndex, an integer.

It's the . in image.url key that's giving you problems. The . indicates to go down a level, but metadata params can't be nested like that.

You can modify the key to an acceptable value such as image_url or imageURL, and that should resolve the error you're hitting. (image_url did the trick for me)

If you can, please write the structure of tables (create table DDL commands) and sample data. I will help you. But, I understood that: For example, we have 5 records in course_users table, and in the gradebook_grade may be have 7-8-10 records for only linked user3 and user4. Which users are not data in gradebook_grade table, we must select these users as null values, but which users have data in the gradebook_grade table, these users must be selected as one by one with the last attempt_date field.

For Example:

In this example, user3 and user4 have courses, but other users don't have.

Firstly we write a query that will select only users, which has courses and group these users by the last attaempt_date

You didn't fully follow the master recipe that you reference. If you continue reading, you will see:

read-syntax must return one value: code for a module expres­sion, repre­sented as a syntax object. Typi­cally, the converted S-expres­sions from the source file are inserted into this syntax object. This syntax object must have no iden­ti­fier bind­ings. This module code must include a refer­ence to the expander that will provide the initial set of bind­ings when the module code is eval­u­ated. In pseudocode:

Ultimately, the answer was super simple: I was downloading the wrong corporate certificate. When downloading the SSL certificate from Chrome, there is a "Certification Path" tab. Mine had 3 certificates in it, I'll call them A, B, and C. B descended from A, and C from B. I made the mistake of downloading C, the lowest level one. When I downloaded A and put it in my cacert.pem file, it worked.

There are no guarantees of allocations (or lack of thereof) specified in the standard for std::function constructors. Most you can hope for is a recommendation, from 20.14.17.3.2:

Recommended practice: Implementations should avoid the use of dynamically allocated memory for small callable objects, for example, where f refers to an object holding only a pointer or reference to an object and a member function pointer.

So your best bet would be to look at your implementation and check when allocation does not happen.

React does not recognize the state change of arrays the way you do it.

Set data as a new array reference like this.