Is there a possibility to use filtering in dplyr and use negative of like operator? Something like (which does not work): my_df %>% filter(text !%like% "dirty talk") >Solution : just like this: my_df %>% filter(!text %like% "dirty talk") Since placing the exclamation like so makes the statement not

from my understanding operators are only defined for builtin types and can’t be defined for user types so: a := 1 b := 2 c := a + b // possible but as soon as you define your own types you need to do: a := NewType(1) b := NewType(2) c := a + b… Read More How can time.Duration use operators in Go?

I’ve stumbled upon ^ operator in python, and I don’t understand what is does. I couldn’t find anything about it online. >Solution : The ^ operator in Python is known as the bitwise XOR operator. It performs a binary XOR operation on two operands and returns the result. Let’s say you have two integers a… Read More What does ^ do in python?

hearted people who clicked in to see this question.I just started learning to use ggplot. ggplot(mpg) aes(x = displ) |> ggplot(mpg) The first command mpg is passed to ggplot as an argument to data =, while the second command is of the same form, but why mpg is passed as an argument to mapping =… Read More Why does ggplot change the position of the parameter values of data= and mapping= when using "pipe" operator?

hearted people who clicked in to see this question.I just started learning to use ggplot. ggplot(mpg) aes(x = displ) |> ggplot(mpg) The first command mpg is passed to ggplot as an argument to data =, while the second command is of the same form, but why mpg is passed as an argument to mapping =… Read More Why does ggplot change the position of the parameter values of data= and mapping= when using "pipe" operator?

class Gebot{ string name; int betrag; public: Gebot(string name, int betrag = 100) : name{name} , betrag{betrag} { //ganze Zahl >0 und <=10.000.000 if(name.size() ==0 || betrag <=0 || betrag > 10000000) throw runtime_error("illegal name or deposite"); } bool selbe_bieterin(const Gebot& gebot) const{ if(gebot.name == this->name) return true; return false; } bool operator==(const Gebot& gebot)… Read More how to fix no viable overloaded '=' in cpp

In c++ 20 we can use concepts which works like the where keyword in c# but I’m wondering how can i check T has some operator overloaded on it. c++ Example:- template <class T> concept SupportPlusEqual = requires (T t) { t += t }; template <class T> requires SupportPlusEqual <T> void Add (T& lhs,… Read More c++ 20 concepts alternative in c#

In Julia, I have my own struct, say MyNumber. I would like to define an operator, e.g. the product operator *, for my struct. The following is what I tried. struct MyNumber name::String value::Int end x1 = MyNumber("postive", 4) x2 = MyNumber("postive", 3) # define product operator for MyNumber a::MyNumber * b::MyNumber = MyNumber("no_name", a.value… Read More In Julia, how to define operator for more than 2 structs?

I am attempting to set up a list from double type x to double type y, incremented by .001. dblx = .093 dbly = .103 do while dblx <= dbly "INSERT STATEMENT for dblx" dblx = dblx + .001 loop Now this works until I get to .102. If dbly < .102 I have no… Read More VBA do loop with double variable