[#FOLLY_PP_FOR_EACH]
= FOLLY_PP_FOR_EACH
:mrdocs:

FOLLY_PP_FOR_EACH

== Synopsis

Declared in `<folly/Preprocessor.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define FOLLY_PP_FOR_EACH(fn, ...)

----

== Description

Used to invoke a preprocessor macro, the name of which is passed as the first argument, once for each subsequent variadic argument.

At present, supports [0, 16) arguments.]

This input:

#define DOIT(a) go_do_it(a); FOLLY_PP_FOR_EACH(DOIT, 3, 5, 7) #undef DOIT

Expands to this output (with whitespace adjusted for clarity):

go_do_it(3); go_do_it(5); go_do_it(7);

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fn*
| The macro to invoke once for each subsequent argument.
|===


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