oyamo

package main

import (
	"github.com/go-co-op/gocron"
	"time"
)

func ScheduleTask(quit chan bool, seconds int, task func()) {
	s := gocron.NewScheduler(time.UTC)
	// Quit the scheduler when the quit channel is returns true

oyamo

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

oyamo

<?php

/*
参考自：
http://darklaunch.com/2010/09/01/http-status-codes-in-php-http-header-response-code-function
http://snipplr.com/view/68099/
*/

function HTTPStatus($num) {
    $http = array(

oyamo

<select>
    <option value="Afghanistan">Afghanistan</option>
    <option value="Albania">Albania</option>
    <option value="Algeria">Algeria</option>
    <option value="American Samoa">American Samoa</option>
    <option value="Andorra">Andorra</option>
    <option value="Angola">Angola</option>
    <option value="Anguilla">Anguilla</option>
    <option value="Antartica">Antarctica</option>
    <option value="Antigua and Barbuda">Antigua and Barbuda</option>

oyamo

    double mLatitude = 0.0;
    double mLongitude = 0.0;

    private FusedLocationProviderClient mFusedLocationClient;
    //        mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
    //        ^ to be instatiated inside onCreate method

    public void fetchGPS() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;