diff options
| -rw-r--r-- | exercises/106_files.zig | 40 | ||||
| -rw-r--r-- | exercises/107_files2.zig | 22 |
2 files changed, 31 insertions, 31 deletions
diff --git a/exercises/106_files.zig b/exercises/106_files.zig index aba07b6..f5fd1ac 100644 --- a/exercises/106_files.zig +++ b/exercises/106_files.zig @@ -1,22 +1,22 @@ // // Until now, we've only been printing our output in the console, -// which is good enough for fighting alien and hermit bookkeeping. +// which is good enough for fighting aliens and hermit bookkeeping. // -// However, many other task require some interaction with the file system, +// However, many other tasks require some interaction with the file system, // which is the underlying structure for organizing files on your computer. // -// The File System provide a hierarchical structure for storing files -// by organizing files into directories, which hold files and other directories, -// thus creating a tree structure for navigating. +// The file system provides a hierarchical structure for storing files +// by organizing them into directories, which hold files and other directories, +// thus creating a tree structure that can be navigated. // -// Fortunately, zig standard library provide a simple api for interacting -// with the file system, see the detail documentation here +// Fortunately, the Zig standard library provides a simple API for interacting +// with the file system, see the detail documentation here: // // https://ziglang.org/documentation/master/std/#std.fs // -// In this exercise, we'll try to -// - create a new directory -// - open a file in the directory +// In this exercise, we'll try to: +// - create a new directory, +// - open a file in the directory, // - write to the file. // // import std as always @@ -27,42 +27,42 @@ pub fn main() !void { const cwd: std.fs.Dir = std.fs.cwd(); // then we'll try to make a new directory /output/ - // to put our output files. + // to store our output files. cwd.makeDir("output") catch |e| switch (e) { // there is a chance you might want to run this // program more than once and the path might already - // been created, so we'll have to handle this error + // have been created, so we'll have to handle this error // by doing nothing // // we want to catch error.PathAlreadyExists and do nothing ??? => {}, - // if is any other unexpected error we just propagate it through + // if there's any other unexpected error we just propagate it through else => return e, }; // then we'll try to open our freshly created directory - // wait a minute + // wait a minute... // opening a directory might fail! // what should we do here? var output_dir: std.fs.Dir = 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 + // and propagate any error up const file: std.fs.File = try output_dir.createFile("zigling.txt", .{}); // it is a good habit to close a file after you are done with it // so that other programs can read it and prevent data corruption // but here we are not yet done writing to the file - // if only there were a keyword in zig that - // allows you "defer" code execute to the end of scope... + // if only there were a keyword in Zig that + // allowed you to "defer" code execution to the end of the scope... file.close(); - // !you are not allowed to switch these two lines above the file closing line! + // you are not allowed to move these two lines above the file closing line! const byte_written = try file.write("It's zigling time!"); std.debug.print("Successfully wrote {d} bytes.\n", .{byte_written}); } // to check if you actually write to the file, you can either, -// 1. open the file on your text editor, or +// 1. open the file in your text editor, or // 2. print the content of the file in the console with the following command // >> cat ./output/zigling.txt // @@ -86,7 +86,7 @@ pub fn main() !void { // // Question: // - what should you do if you want to also read the file after opening it? -// - go to documentation of the struct `std.fs.Dir` here +// - go to the documentation of the struct `std.fs.Dir` here: // https://ziglang.org/documentation/master/std/#std.fs.Dir // - can you find a function for opening a file? how about deleting a file? // - what kind of options can you use with those functions? diff --git a/exercises/107_files2.zig b/exercises/107_files2.zig index 9266358..45e12f5 100644 --- a/exercises/107_files2.zig +++ b/exercises/107_files2.zig @@ -4,17 +4,17 @@ // - create a file {project_root}/output/zigling.txt // with content `It's zigling time!`(18 byte total) // -// Now there no point in writing to a file if we don't read from it am I right? -// let's write a program to read the content of the file that we just created. +// Now there's no point in writing to a file if we don't read from it, am I right? +// Let's write a program to read the content of the file that we just created. // // I am assuming that you've created the appropriate files for this to work. // -// Alright, bud, lean in close here's the game plan. +// Alright, bud, lean in close. Here's the game plan. // - First, we open the {project_root}/output/ directory // - Secondly, we open file `zigling.txt` in that directory -// - then, we initalize an array of characters with all letter 'A', and print it -// - After that, we read the content of the file to the array -// - Finally, we print out the read content +// - Then, we initalize an array of characters with all letter 'A', and print it +// - After that, we read the content of the file into the array +// - Finally, we print out the content we just read const std = @import("std"); @@ -30,21 +30,21 @@ pub fn main() !void { const file = try output_dir.openFile("zigling.txt", .{}); defer file.close(); - // initalize an array of u8 with all letter 'A'. - // we need to pick the size of the array, 64 seems like a good number. + // 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; // this should print out : `AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA` std.debug.print("{s}\n", .{content}); // okay, seems like a threat of violence is not the answer in this case - // can you go here to find a way to read the content ? + // 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); - // 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 ? + // 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 |