Useful tips for everyday
How do you access variables and methods in a class? Class methods can access class variables and class methods directly. Class methods cannot access instance…
Is the Raspberry Pi 3 WiFi or Bluetooth? Now that the Raspberry Pi 3 comes with Bluetooth and WiFi built-in, people (including me) were excited…
Can you revert to a previous app version IOS? In Time machine, navigate to [User] > Music > iTunes > Mobile Applications. Select and restore…
Are limits of a sequence unaffected by rearrangement? No, the behavior of the sequence does not change when rearranging its terms. As an example, let’s…
What is the use of MD5 authentication for OSPF routers? The OSPF MD5 authentication is more secure than the plain text authentication. This method uses…
Is VMware better than VirtualBox? VMware vs. Virtual Box: Comprehensive Comparison. Oracle provides VirtualBox as a hypervisor for running virtual machines (VMs) while VMware provides…
What are domain aggregates? Aggregate is a pattern in Domain-Driven Design. A DDD aggregate is a cluster of domain objects that can be treated as…
Is iCloud backup really necessary? Many apps sync their data online like this anyway, so the iCloud backup isn’t completely essential. It depends on the…
What to do after installing a LAMP? After installing LAMP, you can Set Up phpMyAdmin, Install WordPress, go on to do more with MySQL (A…
How do I grep to find a string in a file? The grep command searches through the file, looking for matches to the pattern specified.…