3 files changed, 7 insertions, 7 deletions
diff --git a/linux/advent2020/2a.mu b/linux/advent2020/2a.mu
index 4492e7ea..ce678eb8 100644
--- a/linux/advent2020/2a.mu
+++ b/linux/advent2020/2a.mu
@@ -46,8 +46,8 @@ fn main -> _/ebx: int {
     }
     skip-chars-matching-whitespace line
     # now check the rest of the line
-    var is-valid?/eax: boolean <- is-valid? start, end, letter, line
-    compare is-valid?, 0/false
+    var valid?/eax: boolean <- valid? start, end, letter, line
+    compare valid?, 0/false
     {
       break-if-=
       print-string 0, "valid!\n"
@@ -60,7 +60,7 @@ fn main -> _/ebx: int {
   return 0
 }
 
-fn is-valid? start: int, end: int, letter: byte, password: (addr stream byte) -> _/eax: boolean {
+fn valid? start: int, end: int, letter: byte, password: (addr stream byte) -> _/eax: boolean {
   var letter-count/edi: int <- copy 0
   # for every c in password
   #   if (c == letter)
diff --git a/linux/advent2020/2b.mu b/linux/advent2020/2b.mu
index f228b451..121e9dfa 100644
--- a/linux/advent2020/2b.mu
+++ b/linux/advent2020/2b.mu
@@ -52,8 +52,8 @@ fn main -> _/ebx: int {
     }
     skip-chars-matching-whitespace line
     # now check the rest of the line
-    var is-valid?/eax: boolean <- is-valid? pos1, pos2, letter, line
-    compare is-valid?, 0/false
+    var valid?/eax: boolean <- valid? pos1, pos2, letter, line
+    compare valid?, 0/false
     {
       break-if-=
       print-string 0, "valid!\n"
@@ -69,7 +69,7 @@ fn main -> _/ebx: int {
 # ideally password would be a random-access array
 # we'll just track an index
 # one benefit: we can easily start at 1
-fn is-valid? pos1: int, pos2: int, letter: byte, password: (addr stream byte) -> _/eax: boolean {
+fn valid? pos1: int, pos2: int, letter: byte, password: (addr stream byte) -> _/eax: boolean {
   var i/esi: int <- copy 1
   var letter-count/edi: int <- copy 0
   # while password stream isn't empty
diff --git a/linux/advent2020/4b.mu b/linux/advent2020/4b.mu
index 00e99eeb..2dc6c6a2 100644
--- a/linux/advent2020/4b.mu
+++ b/linux/advent2020/4b.mu
@@ -231,7 +231,7 @@ fn main -> _/ebx: int {
           var c/eax: (addr byte) <- index s3, i
           {
             var c2/eax: byte <- copy-byte *c
-            var valid?/eax: boolean <- is-hex-digit? c2
+            var valid?/eax: boolean <- hex-digit? c2
             compare valid?, 0
             loop-if-= $main:word-loop
           }