botan | Cryptography Toolkit | Cryptography library

data.fruits.filter(item => item.id == id) creates an array with just one product, the one with the id given in the parameter. Accessing this array with [0] will get the one product in the array and .price will return its price

Check whether dictX['CATALOG']['GROUP'] is a list or not. If it's not a list, the length is 1.

You could do:

Note: Actually your data has 6 columns.

For this sample data you can self join the table with the operator LIKE in the ON clause to get the default genus and update with that the empty column values:

Finally found a solution. I recursively iterate every element and count children of each element. At the end of the loop, the element with the most children becomes the main element. Here's the code:

After 4 hours of painful troubleshooting and rebuilding the library with different compilers over and over, I have found out that Botan does not work properly if "solution configuration" is not set to "Release" rather than "Debug" in Visual Studio.

This is likely caused by your Botan version not being build with support for the specified algorithm. The method CipherMode::create returns a nullptr if the specified algorithm is not found (reference). You would then have to check the result, e.g.:

Author of Botan replied to me that

The problem is the globally defined object.

The problem is that the mlock pool is a singleton created on first use then destroyed sometime after main returns. First your object is created. It allocates memory. This results in the pool being created. Destruction happens LIFO. So first the pool is destroyed. Then your object is destroyed, and attempts to touch memory (to zero it) which has already been unmapped.

Workarounds,

• Create a Botan::Allocator_Initializer object to force initialization before your object is created (thus the pool lives until after your object has been destructed)
• Disable locking_allocator module
• Set env var BOTAN_MLOCK_POOL_SIZE to 0
• No global vars

In principle the locking allocator instead of munmaping the memory, just zeros it, and leave it to be unmapped by the OS on process exit. This might still break invariants, but not as badly. It also causes valgrind to reports leaks which is obnoxious.

I think because it was mmap'ed directly and not through malloc, valgrind doesn't track it.

Proverbially too late to answer. I had the same question too until I looked into the source code. I don't know why they named it that way. But apparently passhash9 is PBKDF2 (source).