ramn

val primes: Stream[Int] = 2 #:: Stream.from(3).filter { n => !primes.takeWhile(_ <= math.sqrt(n)).exists(n % _ == 0) }

def isPrime(n: Int) = primes.dropWhile(_ < n).head == n

cmccandless

class Job():
    def __init__(self, *args, **kwargs):
        pass

    def __call__(self, data):
        raise NotImplementedError()

class Square(Job):
    def __call__(self, data):
        return [d * d for d in data]

tapyu

C/C++-related files for development in Vscode

• VScode files (they go in .vscode/) [[1]] [[2]]:
  • lauch.json: debugging configurations.
  • taks.json: create task to build the C/C++ project.
  • c_cpp_properties.json: settings related to IntelliSense.
• .clang-format: rules for how your code should be formatted, such as indentation, line length, spacing, and so on. It is based on a predefined style to base the formatting on (in my case, I use the [Google style][3]).
• Simple Makefile for a basic build system template.
• Instructions to analyze a C/C++ code performance.

arianvp

Native Secure Enclave backed ssh keys on MacOS

It turns out that MacOS Tahoe can generate and use secure-enclave backed SSH keys! This replaces projects like https://github.com/maxgoedjen/secretive

There is a shared library /usr/lib/ssh-keychain.dylib that traditionally has been used to add smartcard support to ssh by implementing PKCS11Provider interface. However since recently it also implements SecurityKeyProivder which supports loading keys directly from the secure enclave! SecurityKeyProvider is what is normally used to talk to FIDO2 devices (e.g. libfido2 can be used to talk to your Yubikey). However you can now use it to talk to your Secure Enclave instead!