Append va_list printf‐style output to string.

Synopsis

Declared in <folly/String.h>

std::string&
stringVAppendf(
    std::string* out,
    char const* format,
    va_list ap);

Return Value

A reference to the output string.

Parameters

Name

Description

out

The string that the formatted output is appended to.

format

The printf‐style format string.

ap

The variadic argument list.

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