Useful tips for everyday
How do I export my iPhone wallpaper? extract-ios-wallpaper.md Backup your iOS device to your computer (not iCloud) through iTunes. Run the app, and click “Read…
Do you need to use managed packages in Salesforce? You must use a Developer Edition organization to create and work with a managed package. To…
What is an Apple 2TB fusion drive? Fusion Drive, a storage option on some iMac and Mac mini computers, combines a hard drive and flash…
What wood is best for insulation? These gaps create air leaks, which cause drafts and may ultimately increase heating and cooling bills. To reduce air…
Can a Raspberry Pi run a security system? It is possible to design a simple home security solution by using Raspberry Pi and utilizing the…
How does a capacitor affect sound? The impedance (think of it as resistance) of a capacitor changes with the frequency of the signal passing through.…
Can you add a signature to iPad email? Open the Settings app and select “Mail, Contacts, Calendars.” This will display your mail account settings. Tap…
What does the characteristic polynomial tell you? In linear algebra, the characteristic polynomial of a square matrix is a polynomial which is invariant under matrix…
Does Memoization use recursion? Memoization is a way to optimize DP algorithms which rely on recursion. What is Memoization in recursion? Memoization is a technique…
How do I sort by second column in bash? Use the -k option to sort on a certain column. For example, use ” -k 2…