brandt

# Optimal bloom filter size and number of hashes

# Tips:
# 1. One byte per item in the input set gives about a 2% false positive rate.
# 2. The optimal number of hash functions is ~0.7x the number of bits per item.
# 3. The number of hashes dominates performance.

# Expected number of items in the collection
# n = (m * ln(2))/k;
n = 300_000

ngauthier

// keepDoingSomething will keep trying to doSomething() until either
// we get a result from doSomething() or the timeout expires
func keepDoingSomething() (bool, error) {
	timeout := time.After(5 * time.Second)
	tick := time.Tick(500 * time.Millisecond)
	// Keep trying until we're timed out or got a result or got an error
	for {
		select {
		// Got a timeout! fail with a timeout error
		case <-timeout:

honkskillet

byte-size tuts

by alexander white ©

golang tutorials

• 0 - installation on a Mac
• 1 - packages
• 2 - remote packages
• 3 - variable syntax
• 4 - functions syntax
• 5 - loops syntax

danesparza

package main

import (
	"fmt"
	"github.com/codegangsta/negroni"
	"github.com/gorilla/mux"
	"log"
	"net/http"
)

andreagrandi

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

type test_struct struct {
	Test string

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

ceteri

opnchaudhary

#!/usr/bin/python
import ftplib
session = ftplib.FTP('example.com','username','password')
file = open('cup.mp4','rb')                  # file to send
session.storbinary('STOR '+'cup.mp4', file)     # send the file
file.close()                                    # close file and FTP
session.quit()

elqsar

protected void setupParent(View view) {
        //Set up touch listener for non-text box views to hide keyboard.
        if(!(view instanceof EditText)) {
            view.setOnTouchListener(new View.OnTouchListener() {
                public boolean onTouch(View v, MotionEvent event) {
                    hideSoftKeyboard();
                    return false;
                }
            });
        }

jmervine

package main

import (
  "fmt"
  "log"
  "net/http"
)

func Log(handler http.Handler) http.Handler {
  return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {