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class User(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(80)) email = db.Column(db.String(120), unique=True) posts = db.relationship('Post', backref='user') class Post(db.Model): id = db.Column(db.Integer,...

Detailed instructions on getting graphviz set up or installed.

It was most frequent question that can a same thread can be run twice. The answer for this is know one thread can run only once . if you try to run the same thread twice it will execute for the first time but will give error for second time and the error will be IllegalThreadStateException . exam...

Open your command line Installation using Ruby gem update --system gem install compass Create a Project compass create <myproject> This will initialize a compass project. It will add a folder called . The folder will look like have the following structure: File/Folderdescription...

A minimal setup for camera output preview (Swift 2, Swift 3) import UIKit import AVFoundation class ViewController: UIViewController { var session: AVCaptureSession? var cameraPreviewLayer: AVCaptureVideoPreviewLayer? override func viewDidLoad() { super.viewDidLoad() ...

By using rowid element you can delete an item from cart. you just have to set item's qty to 0 $deleteItem = array( 'rowid' => 'b99ccdf16028f015540f341130b6d8ec', 'qty' => 0 ); $this->cart->update($data); this will delete item with this rowid.

Detailed instructions on getting nfc set up or installed.

string contents = ""; string url = "http://msdn.microsoft.com"; using (System.Net.WebClient client = new System.Net.WebClient()) { contents = client.DownloadString(url); } Console.WriteLine(contents);

Option Explicit 'GetSystemMetrics32 info: http://msdn.microsoft.com/en-us/library/ms724385(VS.85).aspx #If Win64 Then Private Declare PtrSafe Function GetSystemMetrics32 Lib "User32" Alias "GetSystemMetrics" (ByVal nIndex As Long) As Long #ElseIf Win32 Then Private...

import networkx as nx # importing networkx package import matplotlib.pyplot as plt # importing matplotlib package and pyplot is for displaying the graph on canvas b=nx.Graph() b.add_node('helloworld') b.add_node(1) b.add_node(2) '''Node can be called by any python-hashable obj like string,nu...

Detailed instructions on getting kinect set up or installed.Setting Up a Kinect Sensor Kinect for Windows 1.5, 1.6, 1.7, 1.8 Here are some simple steps to get your Kinect sensor up and running. Step 1: Mount the Sensor on a Stable Surface Place the sensor on a stable surface in a location wh...

/** * Apply a radial mask (vignette, i.e. fading to black at the borders) to a bitmap * @param imageToApplyMaskTo Bitmap to modify */ public static void radialMask(final Bitmap imageToApplyMaskTo) { Canvas canvas = new Canvas(imageToApplyMaskTo); final float centerX = imageToApply...

public function get_username($uid) { $query = $this->db->select('id') ->select('name') ->from('user_table') ->where('id', $uid) ->get(); return $query->result_array(); } this will re...

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Charset: UTF-8, iso-8859-1;q=0.8, *;q=0.5 Accept-Language: en-US,en;q=0.5 Acc...

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html;q=1.0,application/xml;q=0.9 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive ...

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-aliv...

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: * Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate C...

To use a particular set of GPU devices, the CUDA_VISIBLE_DEVICES environment variable can be used: import os os.environ["CUDA_DEVICE_ORDER"]="PCI_BUS_ID" # see issue #152 os.environ["CUDA_VISIBLE_DEVICES"]="0" # Will use only the first GPU device os.en...

from chempy import balance_stoichiometry # Main reaction in NASA's booster rockets: reac, prod = balance_stoichiometry({'NH4ClO4', 'Al'}, {'Al2O3', 'HCl', 'H2O', 'N2'}) from pprint import pprint pprint(reac) {'Al': 10, 'NH4ClO4': 6} pprint(prod) {'Al2O3': 5, 'H2O': 9, 'HCl': 6, 'N2': 3} ...

from chempy import ReactionSystem # The rate constants below are arbitrary rsys = ReactionSystem.from_string("""2 Fe+2 + H2O2 -> 2 Fe+3 + 2 OH-; 42 2 Fe+3 + H2O2 -> 2 Fe+2 + O2 + 2 H+; 17 H+ + OH- -> H2O; 1e10 H2O -> H+ + OH-; 1e-4 Fe+3 + 2 H2O -...