René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Add-Type ReadAllText perf improvement","articleBody":"Add-Type uses File.ReadAllText() API in a loop for reading in multiple source files.  This can be non-performant for multiple reasons:\r\na. ReadAllText() uses a small buffer that increases IO calls.\r\nb. It performs StringBuilder.ToString() internally which allocates a string that is not used, making possible LOH allocation and adding GC pressure.\r\n\r\nConsider using a different pattern:\r\n```\r\nStringBuilder sourceCode = new StringBuilder();\r\n\r\nforeach (string file in paths)\r\n{\r\n    foreach (string line in File.ReadAllLines(file))\r\n    {\r\n        sourceCode.AppendLine(line);\r\n    }\r\n}\r\n\r\nString result = sourceCode.ToString();\r\n```","author":{"url":"https://github.com/PaulHigin","@type":"Person","name":"PaulHigin"},"datePublished":"2017-10-18T23:27:00.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/5158/PowerShell/issues/5158"}