Useful tips for everyday
How do you check whether the tree is balanced or not? To check if a tree is height-balanced, get the height of left and right…
Is a VPN PCI compliant? A VPN network that is segregated out can be eliminated from scope, but your PCI environment still must maintain it’s…
What sound system does BMW 3 Series use? Harman Kardon premium Logic 7 The Harman Kardon premium Logic 7 ® surround-sound systems for each BMW…
Can we use SELECT in WHERE clause? Note: Although aggregate functions cannot appear directly in a WHERE clause, they can appear in the SELECT or…
How to get substring from file name and move to matching? The new part is, if the ID of the document is not included in…
What happens when MongoDB syncs a replica set? For an overview of MongoDB initial sync process, see the Replica Set Syncing section. Initial sync operations…
What can you do with OmniGraffle? OmniGraffle is incredibly good at making a wide range of flowcharts (or mind maps—whatever you call them is what…
What is ringing in transmission line? In principle, the ringing effect is due to the impedance discontinuities along the transmission path. When a signal is…
What is the baud rate of MIDI? 31.25 k. The MIDI standard specifies a baud rate of 31.25 k. (The baud rate is the maximum…
Can you super glue instead of solder? There is no good substitute for soldering. No glue made will conduct electricity or hold as well as…