halil

import cv2
import time

hog = cv2.HOGDescriptor()
hog.setSVMDetector(cv2.HOGDescriptor_getDefaultPeopleDetector())
cap = cv2.VideoCapture("/path/to/test/video")
while True:
    r, frame = cap.read()
    if r:
        start_time = time.time()

halil

import cv2
import time

person_cascade = cv2.CascadeClassifier(
    os.path.join('/path/to/haarcascade_fullbody.xml'))
cap = cv2.VideoCapture("/path/to/test/video")
while True:
    r, frame = cap.read()
    if r:
        start_time = time.time()

halil

Here's how you could create custom error classes in Node.js using latest ES6 / ES2015 syntax.

I've tried to make it as lean and unobtrusive as possible.

Defining our own base class for errors

errors/AppError.js

halil

callLog = [];

/* set up an override for the Function call prototype
 * @param func the new function wrapper
 */
function registerOverride(func) {
   oldCall = Function.prototype.call;
   Function.prototype.call = func;
}

halil

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...

halil

Development Phase:

Step 1: Create Certificate .pem from Certificate .p12
Command: openssl pkcs12 -clcerts -nokeys -out apns-dev-cert.pem -in apns-dev-cert.p12

Step 2: Create Key .pem from Key .p12
Command : openssl pkcs12 -nocerts -out apns-dev-key.pem -in apns-dev-key.p12

Step 3: Optional (If you want to remove pass phrase asked in second step)
Command : openssl rsa -in apns-dev-key.pem -out apns-dev-key-noenc.pem

halil

a = [1,2,3,4,2,1,5,6,2,1,2,3,7,6,3,2,1,2,3,6]
n = len(a)
m = 2

#Function to accept reference string and frame size.
def accept():
    global a,n,m
    a = []
    n = input("\n Enter the size of reference string : ")
    for i in range(n):

halil

###
#Step 1 - Generate server certificates etc...  (most of this code is horribly ripped off from nodejs docs currently -> http://nodejs.org/docs/latest/api/tls.html)
###

#Assuming your starting from a clean directory

mkdir server
cd server

#generate private key

halil

//Knapsack algorithm
//==================
// wikipedia: [Knapsack (0/1)](http://en.wikipedia.org/wiki/Knapsack_problem#0.2F1_Knapsack_Problem)
// Given a set `[{weight:Number, benefit:Number}]` and a capacity,
// find the maximum value possible while keeping the weight below
// or equal to the capacity
// **params**:  
//    `capacity`  : Number,  
//    `items`     : [{w:Number, b:Number}]  
// **returns**:  

halil

# View list of connections and their states
netstat -tan | grep ':80 ' | awk '{print $6}' | sort | uniq -c

# List all connections and timers
ss -rota | less