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Rick York wrote:

I let each sanity check have its own return statement

if (condition)
{
    goto returnStatement;
}
// Do something else

:returnStatement

return;

function doNothing(something) {
    return something;
}

switch (condition)
{
  case true: return;

  default: // do something else
}

if(the_code_below_can_not_be_executed) return;
// now do what must be done

if (!condition) {
    //Do something else
}

if ( negative condition as a positive) {
   // continue.
else {
   return;
}