Useful tips for everyday
How do I exit terminal emulator? To connect to the console of a running virtual device: Open a terminal window and enter the following command:…
Is parametric the same as normal distribution? Parametric tests assume a normal distribution of values, or a “bell-shaped curve.” For example, height is roughly a…
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,…
What are the parameters for serial.print ( )? An optional second parameter specifies the base (format) to use; permitted values are BIN (binary, or base…
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…