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@ -15,8 +15,7 @@ const print = std.debug.print;
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pub const Exercise = struct {
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pub const Exercise = struct {
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/// main_file must have the format key_name.zig.
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/// main_file must have the format key_name.zig.
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/// The key will be used as a shorthand to build
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/// The key will be used as a shorthand to build just one example.
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/// just one example.
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main_file: []const u8,
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main_file: []const u8,
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/// This is the desired output of the program.
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/// This is the desired output of the program.
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@ -31,8 +30,8 @@ pub const Exercise = struct {
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/// Set this to true to check stdout instead.
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/// Set this to true to check stdout instead.
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check_stdout: bool = false,
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check_stdout: bool = false,
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/// This exercise makes use of C functions
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/// This exercise makes use of C functions.
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/// We need to keep track of this, so we compile with libc
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/// We need to keep track of this, so we compile with libc.
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link_libc: bool = false,
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link_libc: bool = false,
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/// This exercise is not supported by the current Zig compiler.
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/// This exercise is not supported by the current Zig compiler.
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@ -47,13 +46,14 @@ pub const Exercise = struct {
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/// "zero padding" removed.
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/// "zero padding" removed.
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/// For example, "001_hello.zig" has the key "1".
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/// For example, "001_hello.zig" has the key "1".
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pub fn key(self: Exercise) []const u8 {
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pub fn key(self: Exercise) []const u8 {
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const end_index = std.mem.indexOfScalar(u8, self.main_file, '_');
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// Main file must be key_description.zig.
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assert(end_index != null); // main file must be key_description.zig
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const end_index = std.mem.indexOfScalar(u8, self.main_file, '_') orelse
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unreachable;
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// remove zero padding by advancing index past '0's
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// Remove zero padding by advancing index past '0's.
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var start_index: usize = 0;
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var start_index: usize = 0;
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while (self.main_file[start_index] == '0') start_index += 1;
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while (self.main_file[start_index] == '0') start_index += 1;
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return self.main_file[start_index..end_index.?];
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return self.main_file[start_index..end_index];
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}
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}
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/// Returns the exercise key as an integer.
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/// Returns the exercise key as an integer.
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