Trace all calls to a function.

Usage

trace(fun)
untrace(fun)

Arguments

fun any interpreted R function (not quoted).

Description

These are both in very primitive form. If trace is called the function named is marked and each time it is entered the call is printed on the console. To stop tracing a function use untrace.

See Also

debug.

Examples

trace(names)
data.frame(x=1:2, y=3:4)
untrace(names)

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