106-107 completed

exercises/106_files.zig

@@ -35,7 +35,7 @@ pub fn main() !void {
         // by doing nothing
         //
         // we want to catch error.PathAlreadyExists and do nothing
-        ??? => {},
+        error.PathAlreadyExists => {},
         // if there's any other unexpected error we just propagate it through
         else => return e,
     };
@@ -44,7 +44,7 @@ pub fn main() !void {
     // wait a minute...
     // opening a directory might fail!
     // what should we do here?
-    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`,
@@ -55,7 +55,7 @@ pub fn main() !void {
     // but here we are not yet done writing to the file
     // if only there were a keyword in Zig that
     // allowed you to "defer" code execution to the end of the scope...
-    file.close();
+    defer file.close();
 
     // you are not allowed to move these two lines above the file closing line!
     const byte_written = try file.write("It's zigling time!");

exercises/107_files2.zig

@@ -33,7 +33,7 @@ pub fn main() !void {
     // initalize an array of u8 with all letter 'A'
     // we need to pick the 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 @@ pub fn main() !void {
     // 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 answers that are both vaild in this case
-    const bytes_read = zig_read_the_file_or_i_will_fight_you(&content);
+    const bytes_read = try file.readAll(&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 {d} bytes: {s}\n", .{
         bytes_read,
-        content, // change this line only
+        content[0..bytes_read], // change this line only
     });
 }