Function count [src]

Count the characters needed for format. Useful for preallocating memory

Prototype

pub fn count(comptime fmt: []const u8, args: anytype) u64

Parameters

fmt: []const u8

Source

  pub fn count(comptime fmt: []const u8, args: anytype) u64 {
    var counting_writer = std.io.countingWriter(std.io.null_writer);
    format(counting_writer.writer().any(), fmt, args) catch unreachable;
    return counting_writer.bytes_written;
}  