void print_once(string msg, ...)
Prints the string passed to the function exactly one time, even in a loop. This is useful to print a message before the first iteration of a loop, without having to count iterations.
msg
The string to print. This string does support interpolating values. Use sprintf to generate the ‹msg› string if you need to include values.
"global",
int
=0
Normally, multiple instances of print_once() call sites
will work independently of each other. That is, if two separate
call sites to print_once() are passed the same string, the string will be
printed twice (once per call site). With the “global” flag turned on, strings
are checked across all instances of the print_once() functions.
Examples ¶
// Only print "Hello world" one time for (int i = 0; i < 100; ++i) print_once("Hello world\n"); // Print a missing texture warning, just one time across all shaders print_once( sprintf("Missing texture map: %s\n", texture_map), "global", 1);
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