Add ARRAY_SIZE macro, and use it where possible.

1 files changed, 5 insertions, 0 deletions

diff --git a/py/misc.h b/py/misc.h
index 002a97ffe..bf31f7535 100644
--- a/py/misc.h
+++ b/py/misc.h
@@ -52,6 +52,11 @@ int m_get_total_bytes_allocated(void);
 int m_get_current_bytes_allocated(void);
 int m_get_peak_bytes_allocated(void);
 
+/** array helpers ***********************************************/
+
+// get the number of elements in a fixed-size array
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
 /** unichar / UTF-8 *********************************************/
 
 typedef int unichar; // TODO