Lua简明教程

如何简单易懂地解释 Lua 的元表（metatable）？

Lua 的速度为什么比 Python 快？

Work in Progress¶ The HandwritingRecognition plugin uses cloud-based handwriting recogntion to recognize handwritten text from a selection or page layer in a user-specified language.

Currently Xournal++ does not have shortcuts/keybindings configurable in the preferences. However you can write your custom plugin to achieve exactly that.

Gạch xốp chịu nhiệt còn gọi là gạch chịu lửa có thành phần chứa Silic dioxide và AL2O3 có thể chịu nhiệt độ cao và cách nhiệt, được dùng xây lót lò nung.

Bê tông chịu nhiệt còn được gọi là bê tông chịu lửa là vật liệu xây dựng chịu nhiệt từ 1500 - 1700 độ C được sử dụng để xây dựng các lò nung lớn.

Gạch chịu lửa samot (sa mốt) còn được gọi là gạch samot, gạch chịu nhiệt xây lò là một khối gốm chứa hợp kim nhôm (Al2O3) có khả năng chịu nhiệt độ cao.

Gạch chịu lửa cao nhôm còn được gọi là gạch chịu lửa chứa hai thành phần chính là silica và alumina có khả năng chịu nhiệt độ cao được dùng xây lò.

Vữa chịu lửa là sự pha trộn đặc biệt của hỗn hợp xi măng, cát, lớp chống cháy và canxi aluminat, gồm vữa đông kết thủy lực và vữa trộn sẵn khô bằng không khí.

require require('file_path') でluaファイルをモジュールとして読み込みます。Neovimの runtimepath ディレクトリ内の lua ディレクトリに格納されているLuaファイルを require で読み込めます。 例 init.vim lua require('plugins') ~/.config/nvim/lua/plugins/init.lua を読み込みます。 lua require('plugins.completion') ~/.config/nvim/lua/plugins/completion.lua を読み込みます。 lua require('plugins/completion') . or / どっちでもOKです。 . のほうがよく見ます。

t = { name = "Bob" } function t:sayHello() -- note the 't:' part print("Hello" .. self.name) end t:sayHello() -- "Hello Bob"

lint: @luacheck -q .

-- patch os.getenv to not have existing environment variables interfere local _getenv = os.getenv os.getenv = function() end -- luacheck: ignore finally(function() os.getenv = _getenv -- luacheck: ignore end)

Tip: If you see require('mymodule') it is just an alternative syntax for require 'mymodule' the two perform identically and are interchangeable.

Here is the code from main() using different variables, both work fine:

This is the module, notice how the interface table mymodule is local and is returned on the last line of the module:

It's good practice to keep file loaded by content_by_lua_file at a minimum and place all processing logic into external modules. This allows lua_code_cache to work its magic and simplifies your testing.

output = lustache:render("{{title}} spends {{calc}}", view_model)

Is anyone aware of a lua http lib that supports keepalive?

local http = require "resty.http"
local httpc = http.new()
httpc:connect("127.0.0.1", 9081)
local response, err = httpc:request({
  path = "/proxy" .. ngx.var.request_uri, 
  method = "HEAD",
  headers = ngx.req.get_headers(),
  keepalive_timeout = 60,
  keepalive_pool = 10,
})

non-blocking internal requests

      location /external/ {
        internal;
        set $upstream "";
        rewrite_by_lua_file ./lua/get_external.lua;
        resolver 8.8.8.8;
        proxy_pass $upstream;

-- strip beginning '/' from uri path
ngx.var.upstream = ngx.var.request_uri:sub(2)

set $template_root /usr/local/openresty/nginx/html/templates;

docker-openresty/alpine/Dockerfile.fat

This API function (as well as ngx.location.capture_multi) always buffers the whole response body of the subrequest in memory. Thus, you should use cosockets and streaming processing instead if you have to handle large subrequest responses.

Network I/O operations in user code should only be done through the Nginx Lua API calls as the Nginx event loop may be blocked and performance drop off dramatically otherwise. Disk operations with relatively small amount of data can be done using the standard Lua io library but huge file reading and writing should be avoided wherever possible as they may block the Nginx process significantly. Delegating all network and disk I/O operations to Nginx's subrequests (via the ngx.location.capture method and similar) is strongly recommended for maximum performance.

local LuaSocket = require("socket") client = LuaSocket.connect("example.com", 80) client:send("GET /login.php?login=admin&pass=admin HTTP/1.0\r\nHost: example.com\r\n\r\n") while true do s, status, partial = client:receive('*a') print(s or partial) if status == "closed" then break end end client:close()

ngx.unescape_uri(str)

ngx.log(ngx.STDERR, 'your message here')

print(a .. " World") --> Hello World

header_filter_by_lua 'ngx.header.Foo = "blah"';

access_by_lua ' local res = ngx.location.capture("/auth") if res.status == ngx.HTTP_OK then return end if res.status == ngx.HTTP_FORBIDDEN then ngx.exit(res.status) end ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)

The Lua code cache can be temporarily disabled during development by switching lua_code_cache off

it defaults to /etc/nginx/conf.d/default.conf

resolver 8.8.8.8;

string.sub() Returns a substring (a specified portion of an existing string).

local data = ngx.req.get_body_data()

Terra is a low-level system programming language that is embedded in and meta-programmed by the Lua programming language

I don't know what then, I just remember somehow. Around the same time I install renoise, I also install vim. Then in renoise I go to Help>Show Preferences Folder.... Then I right click on Config.xml, then edit in VIM. Then I /search for showscr or something like that. Change false into true, done. On windows sometimes I'm lazy and I just modify the one shortcut that I use to have --scripting-terminal or something as an argument. Also: if you really do a lot of (re)installs I would advise to back up your Config.xml anyway, just like the KeyBindings.xml, TemplateSong.xrns, etc, it'll save you a lot of time right?