API foreach

Apply the function f to the elements of the table passed. On each iteration the function f is passed the key-value pair of that element in the table. table.foreach(tab, func); foreach(tab, func);

From TableLibraryTutorial of lua-users.org.

> table.foreach({1,"two",3}, print) -- print the key-value pairs 1      1 2       two 3      3 > table.foreach({1,"two",3,"four"}, function(k,v) print(string.rep(v,k)) end) 1 twotwo 333 fourfourfourfour

If the function f returns a non-nil value the iteration loop terminates.

> table.foreach({1,"two",3}, function(k,v) print(k,v) return k<2 and nil end) 1      1 2       two

Tables can contain mixed key-value and index-value elements. table.foreach will display all of the elements in a table. To only display the index-value elements see table.foreachi. For more information about this subject see the TablesTutorial.

> t = { 1,2,"three"; pi=3.14159, banana="yellow" } > table.foreach(t, print) 1      1 2       2 3       three pi     3.14159 banana yellow