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authorKartik K. Agaram <vc@akkartik.com>2015-05-05 21:17:24 -0700
committerKartik K. Agaram <vc@akkartik.com>2015-05-05 21:17:24 -0700
commitb96af395b9af2ff9df94b3e82213171f30827c8d (patch)
tree17c8c12648ccc25625e2534ec8d74fbe8f1542cc /counters.mu
parent2e3b597fe85b654e82b891c22d50754fa5a26156 (diff)
downloadmu-b96af395b9af2ff9df94b3e82213171f30827c8d.tar.gz
1276 - make C++ version the default
I've tried to update the Readme, but there are at least a couple of issues.
Diffstat (limited to 'counters.mu')
-rw-r--r--counters.mu62
1 files changed, 32 insertions, 30 deletions
diff --git a/counters.mu b/counters.mu
index 0e414513..4662b833 100644
--- a/counters.mu
+++ b/counters.mu
@@ -1,33 +1,35 @@
-(function init-counter [
-  (default-space:space-address <- new space:literal 30:literal)
-  (n:integer <- next-input)
-  (reply default-space:space-address)
- ])
+# example program: maintain multiple counters with isolated lexical scopes
+# (spaces)
 
-(function increment-counter [
-  (default-space:space-address <- new space:literal 30:literal)
-  (0:space-address/names:init-counter <- next-input)  ; setup outer space; it *must* come from 'init-counter'
-  (x:integer <- next-input)
-  (n:integer/space:1 <- add n:integer/space:1 x:integer)
-  (reply n:integer/space:1)
- ])
+recipe init-counter [
+  default-space:address:array:location <- new location:type, 30:literal
+  n:integer <- next-ingredient
+  reply default-space:address:space
+]
 
-(function main [
-  (default-space:space-address <- new space:literal 30:literal)
-  ; counter A
-  (a:space-address <- init-counter 34:literal)
-  ; counter B
-  (b:space-address <- init-counter 23:literal)
-  ; increment both by 2 but in different ways
-  (increment-counter a:space-address 1:literal)
-  (bres:integer <- increment-counter b:space-address 2:literal)
-  (ares:integer <- increment-counter a:space-address 1:literal)
-  ; check results
-  ($print (("Contents of counters a: " literal)))
-  (print-integer nil:literal/terminal ares:integer)
-  ($print ((" b: " literal)))
-  (print-integer nil:literal/terminal bres:integer)
-  ($print (("\n" literal)))
- ])
+recipe increment-counter [
+  default-space:address:array:location <- new location:type, 30:literal
+  0:address:array:location/names:init-counter <- next-ingredient  # setup outer space; it *must* come from 'init-counter'
+  x:integer <- next-ingredient
+  n:integer/space:1 <- add n:integer/space:1, x:integer
+  reply n:integer/space:1
+]
 
-; compare http://www.paulgraham.com/accgen.html
+recipe main [
+  default-space:address:array:location <- new location:type, 30:literal
+  # counter A
+  a:address:space <- init-counter 34:literal
+  # counter B
+  b:address:space <- init-counter 23:literal
+  # increment both by 2 but in different ways
+  increment-counter a:address:space, 1:literal
+  bres:integer <- increment-counter b:address:space, 2:literal
+  ares:integer <- increment-counter a:address:space, 1:literal
+  # check results
+  $print [Contents of counters a: ]
+  $print ares:integer
+  $print [ b: ]
+  $print bres:integer
+  $print [
+]
+]