I am new in programming so I tried python practice I tried to figure out f any operator represents the logical and. in python programming can anybody help?

Problem : I have very simple problem that currently looking for the fast implementation in Matlab. I have below array of values: b = floor(rand(5,5).*255) I also have the similarly sized threshold array : b_thresh = floor(rand(5,5).*255) I want to use the ... But, I am facing below error : Operands to || and && operations must be convertible to logical scalar values How can I resolve the issue?

Problem : I am learning R. I am trying to make the subset of my data frame in the R which is based on one or the other value available in my column of the factors but because of some unknown reason to me I am unable to use | operator with the factor values. If I try to ... != "c" as it will not work. I am stuck with above error from past two days. Please guide me in fixing above R error for me.

Problem: I am learning logical operators in C# and I came across &,&& and |, ||. I am confused about what is the difference in both of these representations?