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This will be our example data frame: color size name rose red big violet blue small tulip red small harebell blue small We can create a mask based on the index values, just like on a column value. rose_mask = df.index == 'rose' df[rose_mask...

Detailed instructions on getting validation set up or installed.

Lightweight simple translation module with dynamic json storage. Supports plain vanilla node.js apps and should work with any framework (like express, restify and probably more) that exposes an app.use() method passing in res and req objects. Uses common __('...') syntax in app and templates. Stores...

Validating the Name entered by a User contain the following check Ensure it is not empty Ensure it contain only alphabets, space and/or dot. So, the regular expression for this is ^[A-Z][a-z]*(\.?\s?[A-Z][a-z]*)+$ This means ^ -> Should start with [A-Z] -> the first lette...

Let's take the Range is from 18 to 80. So, to validate, We should check that the age is a positive integer. Then check it should be greater than or equal to 18 and less than or equal to 80. The test to check whether it is a number or not can be performed by a simple regular expression like ^[0-...

Sometimes, we have to take input from users which should contain only alpha numeric characters. For example, lets say a Username system which allow only letters and numbers, Then this can be done with the following Regular Expression ^[a-zA-Z0-9]+$ ^ is restrict the start [a-zA-Z0-9]+ is th...

Many watchOS apps (like Activity) have several pages which you could simply scroll between them, which is a very good way to use Apple Watch. To create a page based navigation, Ctrl-Drag from one controller to another, and select "next page", as shown in the following picture:

Using the previous example of calculating the factorial of an integer, put in the hash table all values of factorial calculated inside the recursion, that do not appear in the table. As in the article about memoization, we declare a function f that accepts a function parameter fact and a integer pa...

One of the common ways to parametrize your performance scripts is to use a CSV file. The best example of CSV input files usage is a login process. If you want to test your application across different users, you need to provide a list of user credentials. Let’s assume that we have a login request t...

Another way to parametrize your performance scripts is to use database data through JDBC. JDBC is an application programming interface that defines how a client can access a database. First of all, download the JDBC driver to your database (refer to the database vendor). For example, mysql driver c...

If you need to execute a repeating sequence of the same action with different parameters, use the ‘Parameterized Controller’ 3rd party plugin from JMeter-Plugins project. You need to install this plugin first by following installation procedure. Let’s assume that we want to parameterize the login ...

package main import ( "fmt" "time" log "github.com/Sirupsen/logrus" mgo "gopkg.in/mgo.v2" "gopkg.in/mgo.v2/bson" ) var mongoConn *mgo.Session type MongoDB_Conn struct { Host string `json:"Host"` ...

When applied on a map, returns a new map with new or updated key val pairs. It can be used to add new information in existing map. (def userData {:name "Bob" :userID 2 :country "US"}) (assoc userData :age 27) ;; { :name "Bob" :userID 2 :country "US&qu...

This function tells whether a given time lies within a a given time interval. (require '[clj-time.core :as t]) (def date1 (t/date-time 2016 11 5)) (def date2 (t/date-time 2016 12 5)) (def test-date1 (t/date-time 2016 12 20)) (def test-date2 (t/date-time 2016 11 15)) (t/within? (t/interva...

Detailed instructions on getting tortoisesvn set up or installed.

UPDATE wp_options SET option_value = replace(option_value, 'OLD_SITE, 'NEW_SITE') WHERE option_name = 'home' OR option_name = 'siteurl'; UPDATE wp_posts SET guid = replace(guid, 'OLD_SITE','NEW_SITE'); UPDATE wp_posts SET post_content = replace(post_content, 'OLD_SITE', 'NEW_SITE');

Let's start using ExtJS to build a simple web application. We will create a simple web application which will have only one physical page (aspx/html). At a minimum, every ExtJS application will contain one HTML and one JavaScript file—usually index.html and app.js. The file index.html or your defa...

In Haskell, functions can be partially applied; we can think of all functions as taking a single argument, and returning a modified function for which that argument is constant. To illustrate this, we can bracket functions as follows: (((plus) 1) 2) Here, the function (plus) is applied to 1 yiel...

As another example, we have the function map, which takes a function and a list of values, and applies the function to each value of the list: map :: (a -> b) -> [a] -> [b] Let's say we want to increment each value in a list. You may decide to define your own function, which adds one to...

DB backup Database backup is a must before starting any Dynamics CRM upgrade process. This is mandatory as to always have the option to rollback in case of any major roadblock. Wrong Estimation DO NOT underestimate the work involved in a CRM Upgrade process. Audit your current Microsoft Dynamics...