Step one
We need to create a service called jwToken.
Go to api/services directory and create jwToken.js.
'use strict';
const jwt = require('jsonwebtoken'),
tokenSecret = "secretissecret";
module.exports = {
// Generates a token from supplied payload
issue(payload) {
...
Laravel allows you to use multiple Authentication types with specific guards.
In laravel 5.3 multiple authentication is little different from Laravel 5.2
I will explain how to implement multiauthentication feature in 5.3
First you need two different user Model
cp App/User.php App/Admin.php
ch...
Password Based Key Derivation can be used both for deriving an encryption key from password text and saving a password for authentication purposes.
There are several hash algorithms that can be used including SHA1, SHA256, SHA512 which are provided by this example code.
The rounds parameter is use...
See Swift 3 example for usage information and notes
func pbkdf2SHA1(password: String, salt: [UInt8], keyCount: Int, rounds: Int) -> [UInt8]? {
return pbkdf2(CCPBKDFAlgorithm(kCCPRFHmacAlgSHA1), password:password, salt:salt, keyCount:keyCount, rounds:UInt32(rounds))
}
func pbkdf2SHA256(p...
We initialize the data we want to interpolate:
x = 0:0.5:10;
y = sin(x/2);
This means the underlying function for the data in the interval [0,10] is sinusoidal. Now the coefficients of the approximating polynómials are being calculated:
p1 = polyfit(x,y,1);
p2 = polyfit(x,y,2);
p3 = polyfit(...
Func<int, int> add1 = i => i + 1;
Func<int, int, int> add = (i, j) => i + j;
// Behaviourally equivalent to:
int Add1(int i)
{
return i + 1;
}
int Add(int i, int j)
{
return i + j;
}
...
Console.WriteLine(add1(42)); //43
Console.WriteLine(Add1(42));...
To install/update MVC version, follow these steps:
In visual studio, open the Package Manager console (use CTRL + Q, and type package manager console)
In the console appearing, enter the following after the console cursor showing PM>:
Install-Package Microsoft.AspNet.Mvc -Version 5.2.3...
A decision tree is a classifier which uses a sequence of verbose rules (like a>7) which can be easily understood.
The example below trains a decision tree classifier using three feature vectors of length 3, and then predicts the result for a so far unknown fourth feature vector, the so called te...
See Swift 3 example for usage information and notes
func pbkdf2SHA1Calibrate(password:String, salt:[UInt8], msec:Int) -> UInt32 {
let actualRoundCount: UInt32 = CCCalibratePBKDF(
CCPBKDFAlgorithm(kCCPBKDF2),
password.utf8.count,
salt.count,
CCPseudoRandom...
Determine the number of PRF rounds to use for a specific delay on the current platform.
Several parameters are defaulted to representative values that should not materially affect the round count.
password Sample password.
salt Sample salt.
msec Targeted duration we want to achieve f...
The preserveAspectRatio attribute has an optional parameter: meet | slice. The default behavior is meet which stretches the content in both the x and y dimension until it fills either the width or height of the viewBox. The alternative - slice preserves the aspect ratio of the content but scales up ...
What happens when we execute python -m SimpleHTTPServer 9000?
To answer this question we should understand the construct of SimpleHTTPServer (https://hg.python.org/cpython/file/2.7/Lib/SimpleHTTPServer.py) and BaseHTTPServer(https://hg.python.org/cpython/file/2.7/Lib/BaseHTTPServer.py).
Firstly, P...
Spring is a vast framework, so the Spring framework has been divided in several modules which makes spring lightweight.
Some important modules are:
Spring Core
Spring AOP
Spring JDBC
Spring Transaction
Spring ORM
Spring MVC
All the modules of Spring are independent of each other except S...
Tested with A.S. v1.4.1 but should work with newer versions too.
Create a new Android Studio project using the project wizard (Menu:/File/New Project):
Call it "cvtest1"
Form factor: API 19, Android 4.4 (KitKat)
Blank Activity named MainActivity
You should have a cvtest1 dire...
Expression<Func<int, bool>> checkEvenExpression = i => i%2 == 0;
// lambda expression is automatically converted to an Expression<Func<int, bool>>
Regular expression matching is a powerful tool (in Java, and in other contexts) but it does have some drawbacks. One of these that regular expressions tends to be rather expensive.
Pattern and Matcher instances should be reused
Consider the following example:
/**
* Test if all strings in a lis...
