I am trying to display current username in name textview from realtime database but whenever I run my code in place of name it gives me null.

Does the naïve fill suffice? A bot is positioned in a rectangular grid. It can take steps in a west, south, east or north direction by preference, painting as it goes. Sometimes this can lead it to fill the grid, but other times it gets stuck. Examples: 1 The bot is always able to fill a 1×1 gri...

The problem You just got a new job, hurray! You expect to be given various interesting tasks, and be able to learn a lot in the next few months. Good news, your boss gave you your first work this morning. You are now in charge of... Writting adresses on envelopes. Yay. Fortunatelly, you are not r...

The periodic table gets its shape from the arrangement of elements into blocks: An element is assigned its block based on what type of orbital holds its valence electron(s). For instance, the sole valence electron of neutral hydrogen occupies the 1s orbital in the 1s subshell, and so hydrogen be...

Only Python 3 Input: 2 integer numbers on different lines A and B from STDIN Output: multiplication of A * B to STDOUT Rules: [Code size] = max ([code length without spaces, tabs and newlines], [total code length divided by 4]) 33 bytes f = input g = eval print(g(f()) * g(f())) 32 bytes print(in...