Useful tips for everyday
Is JavaScript compiled or interpreted? JavaScript is an interpreted language, not a compiled language. A program such as C++ or Java needs to be compiled…
What is difference between @before and @BeforeClass? The code marked @Before is executed before each test, while @BeforeClass runs once before the entire test fixture.…
What is the difference between single query and multiple query? Single query would always be better than the multiple queries. The number of rows does…
How do I change the search layout in Salesforce? Edit Search Layouts In Lightning Experience, under Objects and Fields, select Object Manager. Choose the object…
What is a WiFi network utility? Wireless Network Watcher is a small utility that scans your wireless network and displays the list of all computers…
How do I connect a wireless keyboard to my USB receiver? Step 1: Put the battery in your wireless keyboard. Put the battery in your…
What is XChaCha20 Poly1305? The XChaCha20-Poly1305 construction can safely encrypt a practically unlimited number of messages with the same key, without any practical limit to…
How do I know what size electrical wire to use? To determine what gauge wire you need, consider the carrying capacity and the amount of…
What is the MLE for repeated Bernoulli trials? For repeated Bernoulli trials, the MLE p ^ is the sample proportion of successes. Suppose that X…
Can a primary key of one table be primary key of another table? Yes. You can have same column name as primary key in multiple…