This is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/
the command zig run my_code.zig will compile and immediately run your Zig
program. Each of these cells contains a zig program that you can try to run
(some of them contain compile-time errors that you can comment out to play
with)
| pub fn ParkingLot(comptime Config: type) type { | |
| return struct { | |
| pub const Lock: type = Config.Lock; | |
| pub const Event: type = Config.Event; | |
| pub const nanotime: fn() u64 = switch (@hasDecl(Config, "nanotime")) { | |
| true => Config.nanotime, |
Run the following in powershell as admin
Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux
Install a distro (ex: Ubuntu 18.04 LTS - https://www.microsoft.com/store/apps/9N9TNGVNDL3Q)
Open your distro you installed via the start menu, let it setup
Update and upgrade
sudo apt-get update
| -- Implements a basic binding for popen that allows non-blocking reads | |
| -- returned "file" table only supports :read(with an optional size argument, no mode etc.) and :close | |
| local function non_blocking_popen(cmd, read_buffer_size) | |
| local ffi = require("ffi") | |
| -- C functions that we need | |
| ffi.cdef([[ | |
| void* popen(const char* cmd, const char* mode); | |
| int pclose(void* stream); | |
| int fileno(void* stream); |
Libuv and libev, two I/O libraries with similar names, recently had the privilege to use both libraries to write something. Now let's talk about my own subjective expression of common and different points.
The topic of high-performance network programming has been discussed. Asynchronous, asynchronous, or asynchronous. Whether it is epoll or kqueue, it is always indispensable to the asynchronous topic.
Libuv is asynchronous, and libev is synchronous multiplexing IO multiplexing.
Libev is a simple encapsulation of system I/O reuse. Basically, it solves the problem of different APIs between epoll and kqueuq. Ensure that programs written using livev's API can run on most *nix platforms. However, the disadvantages of libev are also obvious. Because it basically just encapsulates the Event Library, it is inconvenient to use. For example, accept(3) requires manual setnonblocking after connection. EAGAIN, EWOULDBLOCK, and EINTER need to be detected when reading from a socket. This is a
This is a compiled list of falsehoods programmers tend to believe about working with time.
Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.
Restrict the amount of CPU and memory resources that Chrome can consume.
Tested on Ubuntu 16.04/Linux Mint 18.
Install cgroups:
sudo apt install cgroup-bin
