August 20th, 2007

When you copy a folder, why are the contents merged with the existing contents?

Raymond Chen
Raymond Chen

When you use Explorer to copy a folder, and the folder already exists at the destination, Explorer merges the contents of the folder being copied with the folder that is already there. Why was this behavior chosen instead of replacing the existing folder? My colleague Bob Day explains.¹ Nitpicker’s Corner

¹Although this statement is written as if it were a fact, the claim that Bob’s remarks qualify as an “explanation” is actually my interpretation of his remarks and does not constitute an official position of Microsoft Corporation.

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Old New Thing
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Raymond Chen

Raymond has been involved in the evolution of Windows for more than 30 years. In 2003, he began a Web site known as The Old New Thing which has grown in popularity far beyond his wildest imagination, a development which still gives him the heebie-jeebies. The Web site spawned a book, coincidentally also titled The Old New Thing (Addison Wesley 2007). He occasionally appears on the Windows Dev Docs Twitter account to tell stories which convey no useful information.

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