Add htcount.

	It's useful to know how many entries are in a hashtable.

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/std/htab.myr b/lib/std/htab.myr
index ccccfe9..ec4ce72 100644
--- a/lib/std/htab.myr
+++ b/lib/std/htab.myr
@@ -26,6 +26,7 @@ pkg std =
 	generic htgetv	: (ht : htab(@k, @v)#, k : @k, fallback : @v-> @v)
 	generic hthas	: (ht : htab(@k, @v)#, k : @k -> bool)
 	generic htkeys	: (ht : htab(@k, @v)# -> @k[:])
+	generic htcount	: (ht : htab(@k, @v)# -> std.size)
 
 	generic byhtkeyvals	: (ht : htab(@k, @v)# -> htkviter(@k, @v))
 	impl iterable htkviter(@k, @v) -> (@k, @v)
@@ -207,6 +208,10 @@ generic htkeys = {ht
 	-> keys
 }
 
+generic htcount = {ht
+	-> ht.nelt
+}
+
 generic byhtkeyvals = {ht
 	-> [.ht = ht, .idx = 0]
 }