Zig aims to be a simple language. It is not easy to define what simple exactly means, but zig is also a low-level programming language that aims for c-compatibility. To reach this goal, it needs good semantics in its type system so that developers have a complete toolbox to manipulate data.
So types in zig are composable, but this can become rapidly overwhelming. See those examples. Are you able to understand them at a glance, as soon as you read them?
*const ?u8
?*const u8
*const [2]u8
| # Example ssh config file. Usually located in ~/.ssh/config (user) or /etc/ssh/ssh_config (system) | |
| # This works on both linux and MacOS | |
| # Basic ssh commands converted to ssh/config file format | |
| # Simplest format | |
| # Run with: "ssh blog" => (equivalent to: "ssh [email protected]" and "ssh -i ~/.ssh/id_rsa -p 22 [email protected]") | |
| Host blog |
| google.com | |
| youtube.com | |
| facebook.com | |
| baidu.com | |
| yahoo.com | |
| amazon.com | |
| wikipedia.org | |
| google.co.in | |
| twitter.com | |
| qq.com |
Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...
// see: https://github.com/chadoe/docker-cleanup-volumes
$ docker volume rm $(docker volume ls -qf dangling=true)
$ docker volume ls -qf dangling=true | xargs -r docker volume rm
| ========================== | |
| How Software Companies Die | |
| ========================== | |
| - Orson Scott Card | |
| The environment that nurtures creative programmers kills management and | |
| marketing types - and vice versa. | |
| Programming is the Great Game. It consumes you, body and soul. When | |
| you're caught up in it, nothing else matters. When you emerge into |
| import requests | |
| class HoverException(Exception): | |
| pass | |
| class HoverAPI(object): | |
| def __init__(self, username, password): | |
| params = {"username": username, "password": password} | |
| r = requests.post("https://www.hover.com/api/login", params=params) |
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| 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 |