Useful tips for everyday
What is the meaning of exit 1? Exit Failure: Exit Failure is indicated by exit(1) which means the abnormal termination of the program, i.e. some…
What is the method used to select a value from ListBox in selenium? Select listbox = new Select(driver. findElement(By.id(“multiselect”))); We then use selectByValue() method to…
What is sub-pixel dithering? Dithering technique The principle is that, at sub-pixel level, shifts between individual input images are nearly randomly distributed. For example, a…
How to check PostgreSQL could not connect to server? $ psql -h localhost -p 12345 psql: could not connect to server: Connection refused Is the…
How do I extract numbers from a list of strings in Python? Summary: To extract numbers from a given string in Python you can use…
What is zero crossing detection? The zero crossing detector circuit changes the comparator’s output state when the AC input crosses the zero reference voltage. This…
Is it okay to use hypothesis testing with at test when population distribution is not normal? For a t-test to be valid on a sample…
How to iterate over all columns in a Dataframe? Dataframe class provides a member function iteritems () which gives an iterator that can be utilized…
Can I use Xero for multiple companies? All your businesses in one place If you run a number of businesses, or have different branches of…
How do I make checkboxes disabled in CSS? This is possible by setting pointer-events: none on a parent element of the checkbox 🙂 You can…