SteveX Compiled

A new keyword: once

This would be used in cases where you want to do something once, but not subsequent times the block is encountered. It could be for any language; I'm thinking C# at the moment.

I run across this all the time:

bool bPrintedHeader = false;
while (getSomeData())
{
   if (!bPrintedHeader)
  {
    bPrintedHeader = true;
    printHeader();
  }

  printData();
}

With once:

while (getSomeData())
{
  once
  {
    printHeader();
  }

  printData();
}

Less code, easier to read, one less variable in scope outside the while. What's not to like?

This entry was posted on Sunday, February 13th, 2005 at 10:24 pm.