diff --git a/example/cat/main.zig b/example/cat/main.zig
index df2d64e523..1043c57f03 100644
--- a/example/cat/main.zig
+++ b/example/cat/main.zig
@@ -1,12 +1,12 @@
 const std = @import("std");
 const io = std.io;
-const str = std.str;
+const mem = std.mem;
 
 pub fn main(args: [][]u8) -> %void {
     const exe = args[0];
     var catted_anything = false;
     for (args[1...]) |arg| {
-        if (str.eql(arg, "-")) {
+        if (mem.eql(u8, arg, "-")) {
             catted_anything = true;
             %return cat_stream(&io.stdin);
         } else if (arg[0] == '-') {
@@ -38,7 +38,7 @@ fn cat_stream(is: &io.InStream) -> %void {
     var buf: [1024 * 4]u8 = undefined;
 
     while (true) {
-        const bytes_read = is.read(buf) %% |err| {
+        const bytes_read = is.read(buf[0...]) %% |err| {
             %%io.stderr.printf("Unable to read from stream: {}\n", @errorName(err));
             return err;
         };
diff --git a/example/guess_number/main.zig b/example/guess_number/main.zig
index 0a799c3af4..90a95b2e13 100644
--- a/example/guess_number/main.zig
+++ b/example/guess_number/main.zig
@@ -18,7 +18,7 @@ pub fn main(args: [][]u8) -> %void {
         %%io.stdout.printf("\nGuess a number between 1 and 100: ");
         var line_buf : [20]u8 = undefined;
 
-        const line_len = io.stdin.read(line_buf) %% |err| {
+        const line_len = io.stdin.read(line_buf[0...]) %% |err| {
             %%io.stdout.printf("Unable to read from stdin: {}\n", @errorName(err));
             return err;
         };