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How Can I Get the Current File Name and Line Number in Go?

Barbara Streisand

Dec 04, 2024 pm 07:17 PM

How Can I Get the Current File Name and Line Number in Go?

Determining File Name and Line Number in Go

In numerous programming languages, such as C and C , accessing the current file name and line number is made accessible through the use of FILE and __LINE__, respectively. Subsequently, it's a natural question to ask whether Go offers an analogous approach.

Go's Solution

Fortunately, Go accommodates this need via the runtime.Caller function. It operates in the following manner:

// filename, lineNumber := runtime.Caller(depth)

Here, 'depth' denotes the stack frame number—typically being 0 for the current frame. The values returned are the source code file name and the line number corresponding to the depth parameter's stack frame.

Notably, runtime.Caller can also be employed to retrieve file names and line numbers for calling functions.

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