| // AES Encryption/Decryption with AES-256-GCM using random Initialization Vector + Salt | |
| // ---------------------------------------------------------------------------------------- | |
| // the encrypted datablock is base64 encoded for easy data exchange. | |
| // if you have the option to store data binary save consider to remove the encoding to reduce storage size | |
| // ---------------------------------------------------------------------------------------- | |
| // format of encrypted data - used by this example. not an official format | |
| // | |
| // +--------------------+-----------------------+----------------+----------------+ | |
| // | SALT | Initialization Vector | Auth Tag | Payload | | |
| // | Used to derive key | AES GCM XOR Init | Data Integrity | Encrypted Data | |
This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.
###Array ####Definition:
rebase vs merge).rebase vs merge)reset vs checkout vs revert)git rev-parse)pull vs fetch)stash vs branch)reset vs checkout vs revert)
| //8 Methods to Iterate through Array | |
| //forEach (Do Operation for Each Item in the Array) | |
| [1,2,3].forEach(function(item,index) { | |
| console.log('item:',item,'index:',index); | |
| }); | |
| //map (Translate/Map all Elements in an Array to Another Set of Values.) | |
| const oneArray = [1,2,3]; | |
| const doubledArray = oneArray.map(function(item) { |
https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff
While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.
JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu
Here are the simple steps needed to create a deployment from your local GIT repository to a server based on this in-depth tutorial.
You are developing in a working-copy on your local machine, lets say on the master branch. Most of the time, people would push code to a remote server like github.com or gitlab.com and pull or export it to a production server. Or you use a service like deepl.io to act upon a Web-Hook that's triggered that service.
| "use strict"; | |
| function createHalfPyramid (height) { | |
| for (var i = 1; i <= height; i++) { | |
| var row = ''; | |
| for (var j = 1; j <= (height - i); j++) { | |
| row += ' '; | |
| } |
EMOJI CHEAT SHEET
Emoji emoticons listed on this page are supported on Campfire, GitHub, Basecamp, Redbooth, Trac, Flowdock, Sprint.ly, Kandan, Textbox.io, Kippt, Redmine, JabbR, Trello, Hall, plug.dj, Qiita, Zendesk, Ruby China, Grove, Idobata, NodeBB Forums, Slack, Streamup, OrganisedMinds, Hackpad, Cryptbin, Kato, Reportedly, Cheerful Ghost, IRCCloud, Dashcube, MyVideoGameList, Subrosa, Sococo, Quip, And Bang, Bonusly, Discourse, Ello, and Twemoji Awesome. However some of the emoji codes are not super easy to remember, so here is a little cheat sheet. ✈ Got flash enabled? Click the emoji code and it will be copied to your clipboard.
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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!
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