chshersh

Legend:

• ➖ poor (impossible or very hard to achieve)
• ➕ good (possible but requires some dancing)
• ✔️ excellent (very easy to achieve/have)

PC stands for parser combinators and PG — parser generators.

Property	Generators	Combinators	Description
Power	✔️ LALR	➕ LL(∞)	PC can't handle left-recursive grammars (though, there's some article¹...).

mayufo

var GB2260 = {
  "110000": "北京市",
  "110100": "北京市市辖区",
  "110101": "北京市东城区",
  "110102": "北京市西城区",
  "110103": "北京市崇文区",
  "110104": "北京市宣武区",
  "110105": "北京市朝阳区",
  "110106": "北京市丰台区",
  "110107": "北京市石景山区",

akexorcist

const axios = require('axios')

/* ... */

const params = new URLSearchParams()
params.append('name', 'Akexorcist')
params.append('age', '28')
params.append('position', 'Android Developer')
params.append('description', 'birthdate=25-12-1989&favourite=coding%20coding%20and%20coding&company=Nextzy%20Technologies&website=http://www.akexorcist.com/')
params.append('awesome', true)

johnbianchi

#### General PFCTL Commands ####
$ pfctl -d disable                                # packet-filtering
$ pfctl -e enable                                 # packet-filtering
$ pfctl -q                                        # run quiet
$ pfctl -v -v                                     # run even more verbose
#### Loading PF Rules ####
$ pfctl -f /etc/pf.conf                           # load /etc/pf.conf
$ pfctl -n -f /etc/pf.conf                        # parse /etc/pf.conf, but dont load it
$ pfctl -R -f /etc/pf.conf                        # load only the FILTER rules
$ pfctl -N -f /etc/pf.conf                        # load only the NAT rules

hallazzang

Example of how to implement throttling in Asyncio/Aiohttp

This gist consists of 4 files:

throttler.py - Throttler class implementation
asyncio_throttling_example.py - Throttling general coroutines
aiohttp_throttling_example_client.py - Throttling aiohttp requests
aiohttp_throttling_example_server.py - Web server for testing aiohttp_throttling_example_client.py

njam

import asyncio
from collections import deque


class AsyncioPool:
    def __init__(self, concurrency, loop=None):
        """
        @param loop: asyncio loop
        @param concurrency: Maximum number of concurrently running tasks
        """

subfuzion

Overview

This gist is based on the information available at golang/dep, only slightly more terse and annotated with a few notes and links primarily for my own personal benefit. It's public in case this information is helpful to anyone else as well.

I initially advocated Glide for my team and then, more recently, vndr. I've also taken the approach of exerting direct control over what goes into vendor/ in my Dockerfiles, and also work from isolated GOPATH environments on my system per project to ensure that dependencies are explicitly found under vendor/.

At the end of the day, vendoring (and committing vendor/) is about being in control of your dependencies and being able to achieve reproducible builds. While you can achieve this manually, things that are nice to have in a vendoring tool include:

thehesiod

import asyncio
from datetime import datetime, timezone
import os

def utc_now():
    # utcnow returns a naive datetime, so we have to set the timezone manually <sigh>
    return datetime.utcnow().replace(tzinfo=timezone.utc)
  
class Terminator:
  pass

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)

renaudtertrais

const zip = (arr, ...arrs) => {
  return arr.map((val, i) => arrs.reduce((a, arr) => [...a, arr[i]], [val]));
}

// example

const a = [1, 2, 3];
const b = [4, 5, 6];
const c = [7, 8, 9];