Guidelines

What keyword is used to check multiple conditions with an IF statement? The else keyword provides an alternative execution path that gets executed if the…

What is event consistency? Eventual consistency is a consistency model used in distributed computing to achieve high availability that informally guarantees that, if no new…

What tech stack does Twitter use? We use a few cache technologies, like Redis and Twemcache, at enormous scale. More specifically, we have a mix…

How do I screenshot a specific area on iPad? Press and hold the Top button and immediately click the Volume Up button, then release both…

Can Facebook likes be hidden? You can now hide like counts on Instagram and Facebook. After years of testing on both platforms, Facebook and Instagram…

What is a statistically significant F ratio? The F ratio is the ratio of two mean square values. If the null hypothesis is true, you…

Which query is used to modify data? Action Query: Action queries change your data based on some set of criteria. Action queries can delete records,…

How do I enable view state in Salesforce? To enable the View State tab: From your personal settings, enter Advanced User Details in the Quick…

How do you call a function in a switch case? You need to declare functions before you use them. You can not repeat the type…

Can I export a virtual machine VirtualBox? Importing and Exporting Virtual Machines. Oracle VM VirtualBox can import and export virtual machines in the following formats:…