I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
\
Magic words:
psql -U postgres
Some interesting flags (to see all, use -h
or --help
depending on your psql version):
-E
: will describe the underlaying queries of the\
commands (cool for learning!)-l
: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
Hello software developers,
Please check your code to ensure you're not making one of the following mistakes related to cryptography.
- Writing your own home-grown cryptography primitives (For example: Mifare Classic)
- Exception: For the sake of learning, but don't deploy it in production.
- Using a fast hash function (e.g. MD5, SHA256) for storing passwords. Use bcrypt instead.
- Not using a cryptographically secure random number generator
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This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.
Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:
getTweetsFor("domenic", function (err, results) {
// the rest of your code goes here.
I bundled these up into groups and wrote some thoughts about why I ask them!
If these helped you, I'd love to hear about it!! I'm on twitter @vcarl_ or send me an email carl.vitullo@gmail.com
https://blog.vcarl.com/interview-questions-onboarding-workplace/
- How long will it take to deploy my first change? To become productive? To understand the codebase?
- What kind of equipment will I be provided? Will the company pay/reimburse me if I want something specific?
# The following commands are tested on macOS only, so a few | |
# tweaks might be necessary on a different OS | |
# Go to home folder | |
alias ~='cd ~' | |
# Navigate back | |
alias cd1='cd ..' | |
alias cd2='cd ../..' | |
alias cd3='cd ../../..' |