For example, use /Wv:17 to display only warnings introduced in Visual Studio 2012 (major version 17) or earlier. The optional parameter version takes the form nn], where nn is the major version number, mm is the optional minor version number, and bbbbb is the optional build number of the compiler. It lets you maintain your existing build process while you fix them. You can use this option to suppress new warnings in code when you migrate to a newer version of the compiler. For more information, see Compiler warnings that are off by default.ĭisplays only warnings introduced in the version compiler version and earlier. This option helps ensure the fewest possible hard-to-find code defects.ĭisplays all warnings displayed by /W4 and all other warnings that /W4 doesn't include-for example, warnings that are off by default. For a new project, it may be best to use /W4 in all compilations. We recommend that you use this option to provide lint-like warnings. W4 displays level 1, level 2, and level 3 warnings, and all level 4 (informational) warnings that aren't off by default. W3 displays level 1, level 2, and level 3 (production quality) warnings. W2 displays level 1 and level 2 (significant) warnings. W1 is the default setting in the command-line compiler. Specifies the level of warnings to be generated by the compiler. The warning options and related arguments are described in the following tables: Option The warning options specify which compiler warnings to display and the warning behavior for the entire compilation. Just remember that we’ve been shortening words since the days of Morse code.Specifies how the compiler generates warnings for a given compilation. Some abbreviations have become so commonplace they’ve practically been adopted into our language. Weather radios that had FM and AM radio station capability could now say AM/FM/WX, to show weather radio capability.įolks today sometimes criticize those of us who use abbreviations to send a text message. This time it was used to describe the weather channel buttons: wx1, wx2, and so on. Then, NOAA came out with weather radios and the need for the abbreviation struck again. Nevertheless, the abbreviation stuck and is still being used today.Įven after the days of the telegraph, the need to abbreviate was felt by the Ham radio community. It’s not really clear as to why the “x” was chosen, since the word weather doesn’t have an “x” in it. Thus, the shorthand version of weather was born. It was easier to use only two letters, “w” and “x”. One such word that became abbreviated was the word weather. To make it easier to communicate, using shorthand versions of some words became necessary. One of the greater challenges with Morse code was that it wasn’t easy having to spell out whole words or sentences using dots and dashes. Using a series of electrical signals, in the form of dots and dashes, one could transmit a message over great distances in a short period of time. In 1836, Samuel Morse showed that the telegraph could transmit information over wires. Long before the days of cell phones or email there was the telegraph. I did some research and I have an answer for you! You may have seen the word weather abbreviated “wx” and wondered how that came about. I hope you enjoy this last Sunday in March! I also hope you like that I’ve now started adding the forecast for the week ahead to the Sunday Story blog.
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