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 a simple problem that I'm looking for fast implementation in Matlab. I have an array of values. I get an error that says: Operands to || and && operations must be convertible to logical scalar values

Problem: I am stuck with this ... Please help me that how to deal with this error? operands to the and && operators must be convertible to logical scalar values. matlab

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: Why would a language NOT use Short-circuit evaluation? Are there any benefits of not using it? I see that it could lead to some performances issues... is that true? Why?

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 : How can I use this two statements to verify this? SELECT [...] FROM [...] WHERE some_col in (1,2,3,4,5) AND some_other_expr and SELECT [...] FROM [...] WHERE some_col in (1,2,3) or some_col in (4,5) AND some_other_expr

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?

Problem: How do you get the logical xor of two variables in Python? For example, I have two variables that I expect to be strings. I want to test that only one of them contains a True value (is not None or the empty string): str1 = raw_input("Enter string one:") str2 = ... (most recent call last): File "<stdin>", line 1, in <module> TypeError: unsupported operand type(s) for ^: 'str' and 'str'