106 & 107

patches/patches/106_files.patch

@@ -1,28 +1,24 @@
---- exercises/106_files.zig
-+++ answers/106_files.zig
-@@ -35,9 +35,9 @@ pub fn main() !void {
+--- exercises/106_files.zig	2024-03-27 16:36:44.593077000 +0800
++++ answers/106_files.zig	2024-03-27 16:36:31.548155100 +0800
+@@ -35,7 +35,7 @@
          // by doing nothing
          //
          // we want to catch error.PathAlreadyExists and do nothing
--        ??? => {
--            ???;
--        },
-+        error.PathAlreadyExists => {
-+            return;
-+        },
+-        ??? => {},
++        error.PathAlreadyExists => {},
          // if is any other unexpected error we just propagate it through
          else => return e,
      };
-@@ -46,7 +46,7 @@ pub fn main() !void {
+@@ -44,7 +44,7 @@
      // wait a minute
      // opening a directory might fail!
      // what should we do here?
--    const output_dir: std.fs.Dir = cwd.openDir("output", .{});
-+    const output_dir: std.fs.Dir = try cwd.openDir("output", .{});
+-    var output_dir: std.fs.Dir = cwd.openDir("output", .{});
++    var output_dir: std.fs.Dir = try cwd.openDir("output", .{});
+     defer output_dir.close();
  
      // we try to open the file `zigling.txt`,
-     // and propagate the error up if there are any errors
-@@ -56,7 +56,7 @@ pub fn main() !void {
+@@ -55,7 +55,7 @@
      // but here we are not yet done writing to the file
      // if only there are a keyword in zig that
      // allow you "defer" code execute to the end of scope...

patches/patches/107_files2.patch

@@ -0,0 +1,26 @@
+--- exercises/107_files2.zig	2024-03-27 16:36:56.733062700 +0800
++++ answers/107_files2.zig	2024-03-27 16:36:52.894505100 +0800
+@@ -33,7 +33,7 @@
+     // initalize an array of u8 with all letter 'A'.
+     // we need to pick a size of the array, 64 seems like a good number.
+     // fix the initalization below
+-    var content = ['A']*64;
++    var content = [_]u8{'A'} ** 64;
+     // this should print out : `AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA`
+     std.debug.print("{s}\n", .{content});
+ 
+@@ -41,12 +41,12 @@
+     // can you go here to find a way to read the content ?
+     // https://ziglang.org/documentation/master/std/#std.fs.File
+     // hint: you might find two answer that are both vaild in this case
+-    const byte_read = zig_read_the_file_or_i_will_fight_you(&content);
++    const byte_read = try file.read(&content);
+ 
+     // Woah, too screamy, I know you're excited for zigling time but tone it down a bit
+     // Can you print only what we read from the file ?
+     std.debug.print("Successfully Read {} byte: {s}\n", .{
+         byte_read,
+-        content, // change this line only
++        content[0..byte_read], // change this line only
+     });
+ }