Category: Lifehacks

Can you catch 2 exceptions in Java? In Java 7 it was made possible to catch multiple different exceptions in the same catch block. This is also known as multi catch. As you can see, the two exceptions SQLException and IOException are handled in the same way, but you still have to write two individual…

What is the probability of rolling a 5 on roll of the die? Two (6-sided) dice roll probability table Roll a… Probability 4 3/36 (8.333\%) 5 4/36 (11.111\%) 6 5/36 (13.889\%) 7 6/36 (16.667\%) How many different outcomes are possible for 5 rolls of a die? 7776 possible outcomes By extension, we have a total…

What is a spider in Internet terms? A spider is a program that visits Web sites and reads their pages and other information in order to create entries for a search engine index. What is spider in HTML? A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet…

Will a wireless phone charger demagnetize a credit card? The short answer is probably not. The longer answer is that wireless charging uses an electromagnetic field to power up your iPhone battery, and that could demagnetize the credit card stripe. Wireless charging manufacturers suggest you remove credit cards from your smartphone case before charging to…

Why is Twilio successful? One reason developers love Twilio is that it helps them do difficult things with simple commands. The service is so easy to use, the company famously encourages all new employees to build something to demonstrate at an all hands meeting. How many developers work at Twilio? Now, with more than five…

How much time should be in between gyms? Since your required rest can really vary, Jewell’s basic rule of thumb is to give yourself 24 to 48 hours of rest between training the same muscle groups. Can I work out at 8 pm? Past experts have told us that you shouldn’t work out after 8…

Was Aristotle liberal? Aristotle is often valued highly for his liberal and even democratic elements, as opposed to Plato who, when he is read literally, is considered to be illiberal, even totalitarian, and often a flighty “utopian” – an “anti-political” thinker. Who are liberal thinkers? John Locke and Thomas Hobbes. Enlightenment philosophers are given credit…

What percentage of rugby players get injured? It is not surprising that approximately 1 in 4 rugby players will be injured during the season. With each player performing on average 20- 40 tackles per match. Neck injuries being all too common, it is estimated that up to 25\% of these are caused when players of…

Can I edit after copyright? Yes. Changes after the fact do not invalidate the copyright. Are published works automatically protected by copyright? As of January 1, 1978, under U.S. copyright law, a work is automatically protected by copyright when it is created. Specifically, “A work is created when it is “fixed” in a copy or…

Can you be Intj and Infj at the same time? No, you can’t be both an INTJ and an INFJ. The two have different functions. I had a similar confusing experience with MBTI – I consistently test as an INTJ, but I’m certain that I’m actually an INFJ. How can you tell Infj from Intj…