| A `panic` typically means something went unexpectedly wrong. Mostly we use it to fail fast on errors that shouldn't occur during normal operation, or that we aren't prepared to handle gracefully. | ||
package main |
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import "os" |
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func main() { |
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| We'll use panic throughout this site to check for unexpected errors. This is the only program on the site designed to panic. | panic("a problem") |
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| A common use of panic is to abort if a function returns an error value that we don't know how to (or want to) handle. Here's an example of `panic`king if we get an unexpected error when creating a new file. | _, err := os.Create("/tmp/file") |
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if err != nil { |
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panic(err) |
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} |
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} |