weihanglo

本文譯自 [Tokio internals: Understanding Rust's asynchronous I/O framework from the bottom up][tokio-internals]。
Thanks [David Simmons][david-simmons] for this awesome article!

[Tokio][tokio] 是 Rust 的開發框架，用於開發非同步 I/O 程式（asynchronous I/O，一種事件驅動的作法，可實現比傳統同步 I/O 更好的延伸性、效能與資源利用）。可惜的是，Tokio 過於精密的抽象設計，招致難以學習的惡名。即使我讀完教程後，依然不認為自己充分內化這些抽象層，以便推斷實際發生的事情。

從前的非同步 I/O 相關開發經驗甚至阻礙我學習 Tokio。我習慣使用作業系統提供的 selection 工具（例如 Linux epoll）當作起點，再轉移至 dispatch、state machine 等等。倘若直接從 Tokio 抽象層出發，卻沒有清楚了解 epoll_wait() 在何處及如何發生，我會覺得難以連結每個概念。Tokio 與 future-driven 的方法就好像一個黑盒子。

doggy8088

Angular 18 開發環境說明

為了能讓大家能夠順利的建立起 Angular 18 開發環境，以下是需要安裝的相關軟體與安裝步驟與說明。

[ 作業系統 ]

• Windows 10 以上版本
• Mac OS X 10.6 以上版本

ipbastola

JQ to filter JSON by value

Syntax: cat <filename> | jq -c '.[] | select( .<key> | contains("<value>"))'

Example: To get json record having _id equal 611

cat my.json | jq -c '.[] | select( ._id | contains(611))'

Remember: if JSON value has no double quotes (eg. for numeric) to do not supply in filter i.e. in contains(611)

btroncone

RxJS 5 Operators By Example

⚠️ UPDATE: I have moved the contents of this gist plus more to http://www.learnrxjs.io and https://github.com/btroncone/learn-rxjs. For expanded examples, explanations, and resources, please check out this new location!

A complete list of RxJS 5 operators with easy to understand explanations and runnable examples.

Table of Contents

• buffer
• bufferCount
• bufferTime

121onto

class MoveAttachmentsToNewLocation < ActiveRecord::Migration
  def initialize(name = self.class.name, version = nil)
    access_key = Rails.application.secrets.g3_access_key_id
    secret_key = Rails.application.secrets.g3_secret_access_key
    storage = Fog::Storage::Google.new google_storage_access_key_id: access_key,
                                       google_storage_secret_access_key: secret_key

    @bucket_name = Rails.application.secrets.g3_bucket
    @bucket = storage.directories.get(@bucket_name)
    super(name, version)

mnme

	{ "keys": ["home"], "command": "move_to", "args": {"to": "bol"} },
	{ "keys": ["end"], "command": "move_to", "args": {"to": "eol"} },
	{ "keys": ["shift+end"], "command": "move_to", "args": {"to": "eol", "extend": true} },
	{ "keys": ["shift+home"], "command": "move_to", "args": {"to": "bol", "extend": true } },
	{ "keys": ["super+end"], "command": "move_to", "args": {"to": "eof"} },
	{ "keys": ["super+home"], "command": "move_to", "args": {"to": "bof"} },
	{ "keys": ["super+shift+end"], "command": "move_to", "args": {"to": "eof", "extend": true} },
	{ "keys": ["super+shift+home"], "command": "move_to", "args": {"to": "bof", "extend": true } },

powdahound

// Basic XMPP bot example for HipChat using node.js
// To use:
//  1. Set config variables
//  2. Run `node hipchat_bot.js`
//  3. Send a message like "!weather 94085" in the room with the bot


var request = require('request'); // github.com/mikeal/request
var sys = require('sys');
var util = require('util');

dhrrgn

#!/usr/bin/env ruby

# Pow Port
#
# Quickly and easily change the port that Pow is running on. This allows
# you too run Apache and Pow side-by-side (on different ports of course).
#
# WARNING: This will OVERWRITE your ~/.powconfig file.  If you have custom
# configurations in there, please back it up first.
#