Useful tips for everyday
What does it mean to vacuum a database? A vacuum is used for recovering space occupied by “dead tuples” in a table. A dead tuple…
How do I remove a specific character from a string in Oracle? The Oracle TRIM function is used to remove all leading or trailing characters…
How to change the mapping keys in Vim? To prevent Vim from recursively replacing the mapped keys in the {rhs} of map, you can set…
How do you create a standard access list? To create a standard access list, enter the ip access-list standard global configuration command. Identify the new…
How does the Sobel operator work? The Sobel filter is used for edge detection. It works by calculating the gradient of image intensity at each…
How can I make a cheap mic sound better? High-pass filters can often clean up a lot of the low-end content picked up and amplified…
What is the use of alias in SQL? Aliases are the temporary names given to table or column for the purpose of a particular SQL…
How do I switch to mobile site? Using Device Simulation in Chrome DevTools for Mobile View Open DevTools by pressing F12. Click on the “Device…
What is dual slope ADC? In dual slope type ADC, the integrator generates two different ramps, one with the known analog input voltage VA and…
Can you have a shopping cart and checkout on the same page? Most shopping cart solutions are the default behavior to release the checkout (such…