lzy | tiniest lazy loader for images - written in vanilla JS | Frontend Framework library

I fixed the problem by adding pl-4 bootstrap in-build class to each of the elements in the list.

First of all, be careful using object Main extends App. I find its fields initialization semantic less obvious than plain old main with line-after-line semantics:

I would use the pattern (?<=\S)[aeiou] in case insensitive mode:

You could use the new the standard loading="lazy"-attribute functionality to lazy load images (and iframes if needed). Additionally to support older browsers as well, you could use the polyfill that I‘ve developed for this aspect: https://github.com/mfranzke/loading-attribute-polyfill

The obvious intuition is that the definition for myGenFormula is recursive. That would be the explanation for the stack overflow.

One part of solving it is making sure to add Gen.lzy in the correct places for myGenFormula. This makes sure to execute a single path of generators and avoids needlessly executing all of the recursive generators.

There is a secondary issue with the definition for myGenFormula that will cause a stack overflow. As written, the definition for myGenFormula is statistically unlikely to terminate. The genVar generator is the terminating generator, but it is equally weighted with the other non-terminating generators. There is nothing to keep ScalaCheck from generating an infinite depth of data structures before reaching a stack overflow.

There are two ways to help recursive generators terminate in ScalaCheck. You can pass a numeric depth argument with Gen.sized to your generators, or you could use Gen.frequency.

There is also an initialization issue with the mutually recursive generators. You need to use the lazy keyword on the generator vals that reference myGenFormula to avoid that.

Here's a solution that sprinkles lazy, Gen.lzy and Gen.frequency in your code so that it runs and terminates. You will probably need to tune to your testing needs.

What you want can be achieved with this:

I figure it out @android:color/transparent SomeOthers set this in our App's Style ,this code make the ScrollBar transparent.

Your PEM_read call failed because the BIO you gave it doesn't access the correct data, but you didn't check the return value, and you didn't initialize pkey so even though it's not valid your pkey == NULL check doesn't catch it. As described in the man page on your system (unless Windows) or on the web the second argument to BIO_new_mem_buf must either be the number of bytes in the buffer or -1 if buffer contains a null-terminated C string -- and a string literal like yours does yield a null-terminated string so -1 is suitable -- but sizeof(apointer) is neither of these.

The remainder of your code is correct and works fine if you give it a valid EVP_PKEY*.