Useful tips for everyday
Can NFC interact with RFID? NFC stands for Near-Field Communication. NFC is also based on the RFID protocols. In peer-to-peer mode, it is also possible…
What should the forward voltage of an led be? Another reason the test might not work is if your LED requires a high current (relative…
How do you cancel a job that is printing or one that is waiting to be printed? To cancel a job that is printing or…
How to trace or track statement execution in Python? The –listfuncs option is mutually exclusive with the –trace and –count options. When –listfuncs is provided,…
How do you resize the width and length of the image proportionally? Image resizing with the pointer tool By clicking and dragging on these handles,…
How to delete first two lines and last four lines? I am trying to delete first two lines and last four lines from my text…
Can you make a callout from a trigger? As we know that trigger runs synchronously we cannot make a callout to external system from trigger,…
How is speaker efficiency calculated? For example, a speaker’s efficiency is typically measured with a microphone placed one meter from the speaker. As one watt…
How do you avoid boilerplate codes? The need for boilerplate can be reduced through high-level mechanisms such as metaprogramming (which has the computer automatically write…
Can we use count with group by clause? We can use GROUP BY to group together rows that have the same value in the Animal…