Return¶

Inside a function body, exits early returning a value.

$ wo 'f[x_] := Return[x + 1]; f[5]'
6

Only a definition body, Do and Scan take a Return. Anywhere a value is being collected it stands as the expression it names, so a Table still gives back a list of the same length:

$ wo 'ToString[Table[Return[1], {2}], InputForm]'
{Return[1], Return[1]}

which means a Return inside a Table does not leave the function around it:

$ wo 'f[] := (Table[Return[1], {2}]; 9); f[]'
9

$ wo 'Do[Return[5], {2}]'
5