1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/java/com/seaofnodes/simple/spill/Chapter20Test-testString.smp b/src/test/java/com/seaofnodes/simple/spill/Chapter20Test-testString.smp
new file mode 100644
index 00000000..951cdc32
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/spill/Chapter20Test-testString.smp
@@ -0,0 +1,35 @@
+struct _String {
+    u8[] cs;
+    new _String={ u8[] b -> cs=b; };
+    int _hashCode;
+};
+
+val _equals = { !_String !self, !_String s ->
+    if( self == s ) return true;
+    if( self.cs# != s.cs# ) return false;
+    for( int i=0; i< self.cs#; i++ )
+        if( self.cs[i] != s.cs[i] )
+            return false;
+    return true;
+};
+
+val _hashCode = { !_String self ->
+    self._hashCode
+    ?  self._hashCode
+    : (self._hashCode = _hashCodeString(self));
+};
+
+val _hashCodeString = { !_String self ->
+    int hash=0;
+    if( self.cs ) {
+        for( int i=0; i< self.cs#; i++ )
+            hash = hash*31 + self.cs[i];
+    }
+    if( !hash ) hash = 123456789;
+    return hash;
+};
+
+!_String !s = new _String(new u8[17]);
+s.cs[0] =  67; // C
+s.cs[1] = 108; // l
+_hashCode(s);