let
 Zdroj = #table({"Numbers"}, {{1}, {2}, {3}, {4}, {5}}), 
 NovySloupec = Table.AddColumn(Zdroj, "Double", each 2*[Numbers]) 
in 
 NovySloupec


let
 Source = #table({"Numbers"}, {{1}, {2}, {3}, {4}, {5}}), 
 NovySloupec = Table.AddColumn(Source, "Double", (_) => 2*_[Numbers]) 
in 
 NovySloupec






let
 Source = #table({"Numbers"}, {{1}, {2}, {3}, {4}, {5}}), 
 NovySloupec = Table.AddColumn(Source, "Zopakuj", (_) => _ )  
in 
 NovySloupec



let
 Source = #table({"Numbers"}, {{1}, {2}, {3}, {4}, {5}}), 
 NovySloupec = Table.AddColumn(Source, "Zopakuj", (_) => _[Numbers] )
in
 NovySloupec


let
 Source = #table({"Numbers"}, {{1}, {2}, {3}, {4}, {5}}), 
 NovySloupec = Table.AddColumn(Source, "Zopakuj", (_) => _[Numbers] )
in
 NovySloupec

let
 Source = #table({"Numbers"}, {{1}, {2}, {3}, {4}, {5}}), 
 NovySloupec = Table.AddColumn(Source, "Zopakuj", each _)
in
    NovySloupec