| Please listen up! | |
| I need assistance with preparation for coding session | |
| The CodeSignal screen is meant to test general coding ability. | |
| I’ll be asked to implement a simple coding project from a spec and develop it to the point that it passes some tests. | |
| I should prioritize | |
| a) writing code that passes as many tests as possible and | |
| b) progressing through all four levels quickly. | |
| It'll essentially be a toy simulation of an app that won't require anything except the standard library of chosen programming language. | |
| Note there's no framework/UI or anything similar — basically, it's like the core business logic of an app, but nothing else. | |
| It won’t test detailed knowledge of algorithms, compute systems, or machine learning. |
| version: 2 | |
| jobs: | |
| build: | |
| docker: | |
| - image: circleci/android:api-28-node | |
| working_directory: ~/repo | |
| environment: | |
| JVM_OPTS: -Xmx3200m | |
| steps: | |
| - checkout |
| /* | |
| * Handling Errors using async/await | |
| * Has to be used inside an async function | |
| */ | |
| try { | |
| const response = await axios.get('https://your.site/api/v1/bla/ble/bli'); | |
| // Success 🎉 | |
| console.log(response); | |
| } catch (error) { | |
| // Error 😨 |
This guide shows how to set up a bidirectional client/server authentication for plain TLS sockets.
Newer versions of openssl are stricter about certificate purposes. Use extensions accordingly.
Generate a Certificate Authority:
| # Basically, since we can't use '*' as a wildcard according to the CORS spec, we need to use | |
| # Nginx to conditionally apply it to the "right" subdomains. This should allow all subdomains | |
| # of `yourtld.tld`. | |
| location ~* ^.+\.(ttf|oft|eot|woff|svg)$ { | |
| # | |
| # NOTE: CORS standards allow a specific protocol/host combination, | |
| # 'null', or '*' only. So, wildcard subdomains won't work. | |
| # | |
| # Have a look here: |
| Latency Comparison Numbers | |
| -------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Title</title> | |
| <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <h1>MVVM</h1> |
Picking the right architecture = Picking the right battles + Managing trade-offs
