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To find the groupwise order of values in an R data frame, we can use mutate function of dplyr package along with rank function and grouping will be done with the help of group_by function.For Example, if we have a data frame called df that contains two columns say Group and DV then we can find the groupwise order of DV values by using the command given below −df%%group_by(Group)%%mutate(Order=rank(DV))Example 1Following snippet creates a sample data frame −Group
KobitonThis tool helps in mobile and IoT test, notwithstanding how we choose to automate. Kobiton’s AI-powered script-less feature automates functional, performance, visual and compatibility testing. It ensures comprehensive quality and release at the speed of DevOps.FeaturesCaptures and executes automation without any scriptsCompletely open-standard Appium codeAI-based remediationAutomatically detects crashesVisual validationUX testingEasy and tight CI/CD integrationsInsightful reportsIn-depth session explorationUnlimited number of usersAccess to the real devices in the cloud through on-premises setupTestProjectThis free cloud-based test automation tool is used for web, Android and iOS applications testing on all OSs with ease. It enables easy collaboration with team members using Selenium and Appium ... Read More
Mindful QAThis QA software testing company was founded in 2018 is based in USA. They do not require high minimum or long-term contracts. They are one of the best software testing services. Most of the testers at Mindful QA have an average experience of more than 5 years. Their aim is to provide award-winning software testing services. It makes the QA testing process, right from the beginning till the end.This ethical QA company offers reliable and agile testing. It has more than twenty years of experience in software testing and was named “Top 50 Tech Visionary of 2019”.Major clients − ... Read More
Software testing services or companies mainly offer QA and software testing solutions to test your software products and also provide control over its development process. They help you build high-quality, competitive software and applications. They make sure that your software offers a smooth user experience.TestlioIt is a modern crowdsourced testing service that manages software testing processes. Testlio is an integration of platform, freelancers, and services that help deliver great user experiences. It is the origin of networked testing, with over twenty testing capabilities – functional, usability, localization, location, and many more. It seamlessly integrates with automated testing to guarantee complete ... Read More
Today, in the IT world, software testing has become an essential part and to do it, clients often outsource or give the contract of software testing to other companies. Such companies have many resources and employees for to offer quality testing and deliver quality products as per client’s needs and requirements. A company receives a contract along with an amount that is decided during the initial agreement.Testers usually followed this traditional approach until the concept of Crowdsourced Testing came into existence. This testing is an emerging trend that performs a task similar to that which is usually performed in traditional ... Read More
Decorator function pattern is a pattern that is mainly found in Python and JavaScript, but we can also use it in Golang.It is a pattern in which we can add our own functionality over a current function by wrapping it. Since functions in Golang are considered firstclass objects, which in turn means that we can pass them as arguments as we would in the case of a variable.Example 1Let's start with a very simple example to understand the basic case of passing a function as an argument to an already existing function.Consider the code shown below.package main import ( ... Read More
To extract columns with a particular string in column name of an R data frame, we can use grepl function for column names and then subset the data frame with single square brackets.For Example, if we have a data frame called df and we want to extract columns that has X in their names then we can use the command mentioned below −df[grepl("X",colnames(df))]Example 1Following snippet creates a sample data frame −Students_Score
Sometimes there are cases where we want to know which user is executing the current program and in which directory and we can get all these details with the help of the user package that is present inside the os package of Go's standard library.In this article, we will explore three such cases, where first, we will log out the username who is executing the current process and then we will log out the name along with the id and finally, we will log out from the directory in which the current program is located.Getting the UsernameTo get the username, ... Read More
In case we want to get the size of an array or a slice, we can make use of the built-in len() function that Go provides us with.Example 1Let's first explore how to use the len function with an array. Consider the code shown below.package main import ( "fmt" ) func main() { fmt.Println("Inside the main function") arr := [3]int{1, 2, 3} fmt.Println("The length of the array is:", len(arr)) }In the above code, we are using the len function on the array defined as arr.OutputIf we run the command go run main.go ... Read More
We can close a channel in Golang with the help of the close() function. Once a channel is closed, we can't send data to it, though we can still read data from it. A closed channel denotes a case where we want to show that the work has been done on this channel, and there's no need for it to be open.We open the channel the moment we declare one using the make keyword.ch := make(chan int)Example 1Let's consider a very simple example, in which we will create a buffered channel and then pass data to it and then close ... Read More