Merge pull request #123 from codecrafters-io/change-print-logs-to-stderr

CC-1469: Change all sample logs to print to stderr instead of stdout

compiled_starters/cpp/src/Server.cpp

@@ -10,7 +10,7 @@ int main(int argc, char *argv[])
     std::cerr << std::unitbuf;
 
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    std::cout << "Logs from your program will appear here!\n";
+    std::cerr << "Logs from your program will appear here!\n";
 
     // Uncomment this block to pass the first stage
     //

compiled_starters/csharp/src/Program.cs

@@ -8,7 +8,7 @@
 }
 
 // You can use print statements as follows for debugging, they'll be visible when running tests.
-Console.WriteLine("Logs from your program will appear here!");
+Console.Error.WriteLine("Logs from your program will appear here!");
 
 string command = args[0];
 

compiled_starters/go/cmd/mygit/main.go

@@ -8,7 +8,7 @@ import (
 // Usage: your_program.sh <command> <arg1> <arg2> ...
 func main() {
 	// You can use print statements as follows for debugging, they'll be visible when running tests.
-	fmt.Println("Logs from your program will appear here!")
+	fmt.Fprintf(os.Stderr, "Logs from your program will appear here!\n")
 
 	if len(os.Args) < 2 {
 		fmt.Fprintf(os.Stderr, "usage: mygit <command> [<args>...]\n")

compiled_starters/haskell/app/Main.hs

@@ -11,7 +11,7 @@ import System.IO (IOMode (WriteMode), hPutStrLn, withFile)
 main :: IO ()
 main = do
     -- You can use print statements as follows for debugging, they'll be visible when running tests.
-    putStrLn "Logs from your program will appear here"
+    hPutStrLn stderr "Logs from your program will appear here"
 
     -- Uncomment this block to pass first stage
     -- let createParents = True

compiled_starters/java/src/main/java/Main.java

@@ -5,7 +5,7 @@
 public class Main {
   public static void main(String[] args){
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    System.out.println("Logs from your program will appear here!");
+    System.err.println("Logs from your program will appear here!");
 
     // Uncomment this block to pass the first stage
     //

compiled_starters/javascript/app/main.js

@@ -2,7 +2,7 @@ const fs = require("fs");
 const path = require("path");
 
 // You can use print statements as follows for debugging, they'll be visible when running tests.
-console.log("Logs from your program will appear here!");
+console.error("Logs from your program will appear here!");
 
 // Uncomment this block to pass the first stage
 // const command = process.argv[2];

compiled_starters/python/app/main.py

@@ -4,7 +4,7 @@
 
 def main():
     # You can use print statements as follows for debugging, they'll be visible when running tests.
-    print("Logs from your program will appear here!")
+    print("Logs from your program will appear here!", file=sys.stderr)
 
     # Uncomment this block to pass the first stage
     #

compiled_starters/ruby/app/main.rb

@@ -1,5 +1,5 @@
 # You can use print statements as follows for debugging, they'll be visible when running tests.
-puts "Logs from your program will appear here!"
+$stderr.puts "Logs from your program will appear here!"
 
 # Uncomment this block to pass the first stage
 #

compiled_starters/rust/src/main.rs

@@ -5,7 +5,7 @@ use std::fs;
 
 fn main() {
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    println!("Logs from your program will appear here!");
+    eprintln!("Logs from your program will appear here!");
 
     // Uncomment this block to pass the first stage
     // let args: Vec<String> = env::args().collect();

compiled_starters/typescript/app/main.ts

@@ -10,7 +10,7 @@ enum Commands {
 switch (command) {
     case Commands.Init:
         // You can use print statements as follows for debugging, they'll be visible when running tests.
-        console.log("Logs from your program will appear here!");
+        console.error("Logs from your program will appear here!");
 
         // Uncomment this block to pass the first stage
         // fs.mkdirSync(".git", { recursive: true });

compiled_starters/zig/src/main.zig

@@ -17,7 +17,7 @@ pub fn main() !void {
     const command: []const u8 = args[1];
 
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    try stdout.print("Logs from your program will appear here\n", .{});
+    std.debug.print("Logs from your program will appear here!\n", .{});
 
     if (std.mem.eql(u8, command, "init")) {
         // Uncomment this block to pass the first stage

solutions/cpp/01-gg4/diff/src/Server.cpp.diff

@@ -11,7 +11,7 @@
      std::cerr << std::unitbuf;
 
 -    // You can use print statements as follows for debugging, they'll be visible when running tests.
--    std::cout << "Logs from your program will appear here!\n";
+-    std::cerr << "Logs from your program will appear here!\n";
 +    if (argc < 2) {
 +        std::cerr << "No command provided.\n";
 +        return EXIT_FAILURE;

solutions/csharp/01-gg4/diff/src/Program.cs.diff

@@ -9,7 +9,7 @@
  }
 
 -// You can use print statements as follows for debugging, they'll be visible when running tests.
--Console.WriteLine("Logs from your program will appear here!");
+-Console.Error.WriteLine("Logs from your program will appear here!");
 -
  string command = args[0];
 

solutions/go/01-gg4/diff/cmd/mygit/main.go.diff

@@ -9,7 +9,7 @@
  // Usage: your_program.sh <command> <arg1> <arg2> ...
  func main() {
 -	// You can use print statements as follows for debugging, they'll be visible when running tests.
--	fmt.Println("Logs from your program will appear here!")
+-	fmt.Fprintf(os.Stderr, "Logs from your program will appear here!\n")
 -
  	if len(os.Args) < 2 {
  		fmt.Fprintf(os.Stderr, "usage: mygit <command> [<args>...]\n")

solutions/haskell/01-gg4/diff/app/Main.hs.diff

@@ -12,7 +12,7 @@
  main :: IO ()
  main = do
 -    -- You can use print statements as follows for debugging, they'll be visible when running tests.
--    putStrLn "Logs from your program will appear here"
+-    hPutStrLn stderr "Logs from your program will appear here"
 -
 -    -- Uncomment this block to pass first stage
 -    -- let createParents = True

solutions/java/01-gg4/diff/src/main/java/Main.java.diff

@@ -6,7 +6,7 @@
  public class Main {
    public static void main(String[] args){
 -    // You can use print statements as follows for debugging, they'll be visible when running tests.
--    System.out.println("Logs from your program will appear here!");
+-    System.err.println("Logs from your program will appear here!");
 +    final String command = args[0];
 
 -    // Uncomment this block to pass the first stage

solutions/javascript/01-gg4/diff/app/main.js.diff

@@ -3,7 +3,7 @@
  const path = require("path");
 
 -// You can use print statements as follows for debugging, they'll be visible when running tests.
--console.log("Logs from your program will appear here!");
+-console.error("Logs from your program will appear here!");
 +const command = process.argv[2];
 
 -// Uncomment this block to pass the first stage

solutions/python/01-gg4/diff/app/main.py.diff

@@ -5,7 +5,7 @@
 
  def main():
 -    # You can use print statements as follows for debugging, they'll be visible when running tests.
--    print("Logs from your program will appear here!")
+-    print("Logs from your program will appear here!", file=sys.stderr)
 -
 -    # Uncomment this block to pass the first stage
 -    #

solutions/ruby/01-gg4/diff/app/main.rb.diff

@@ -1,6 +1,6 @@
 @@ -1,16 +1,11 @@
 -# You can use print statements as follows for debugging, they'll be visible when running tests.
--puts "Logs from your program will appear here!"
+-$stderr.puts "Logs from your program will appear here!"
 -
 -# Uncomment this block to pass the first stage
 -#

solutions/rust/01-gg4/diff/src/main.rs.diff

@@ -6,7 +6,7 @@
 
  fn main() {
 -    // You can use print statements as follows for debugging, they'll be visible when running tests.
--    println!("Logs from your program will appear here!");
+-    eprintln!("Logs from your program will appear here!");
 -
 -    // Uncomment this block to pass the first stage
 -    // let args: Vec<String> = env::args().collect();

solutions/typescript/01-gg4/diff/app/main.ts.diff

@@ -11,7 +11,7 @@
  switch (command) {
      case Commands.Init:
 -        // You can use print statements as follows for debugging, they'll be visible when running tests.
--        console.log("Logs from your program will appear here!");
+-        console.error("Logs from your program will appear here!");
 -
 -        // Uncomment this block to pass the first stage
 -        // fs.mkdirSync(".git", { recursive: true });

solutions/zig/01-gg4/diff/src/main.zig.diff

@@ -18,7 +18,7 @@
      const command: []const u8 = args[1];
 
 -    // You can use print statements as follows for debugging, they'll be visible when running tests.
--    try stdout.print("Logs from your program will appear here\n", .{});
+-    std.debug.print("Logs from your program will appear here!\n", .{});
 -
      if (std.mem.eql(u8, command, "init")) {
 -        // Uncomment this block to pass the first stage

starter_templates/cpp/code/src/Server.cpp

@@ -10,7 +10,7 @@ int main(int argc, char *argv[])
     std::cerr << std::unitbuf;
 
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    std::cout << "Logs from your program will appear here!\n";
+    std::cerr << "Logs from your program will appear here!\n";
 
     // Uncomment this block to pass the first stage
     //

starter_templates/csharp/code/src/Program.cs

@@ -8,7 +8,7 @@
 }
 
 // You can use print statements as follows for debugging, they'll be visible when running tests.
-Console.WriteLine("Logs from your program will appear here!");
+Console.Error.WriteLine("Logs from your program will appear here!");
 
 string command = args[0];
 

starter_templates/go/code/cmd/mygit/main.go

@@ -8,7 +8,7 @@ import (
 // Usage: your_program.sh <command> <arg1> <arg2> ...
 func main() {
 	// You can use print statements as follows for debugging, they'll be visible when running tests.
-	fmt.Println("Logs from your program will appear here!")
+	fmt.Fprintf(os.Stderr, "Logs from your program will appear here!\n")
 
 	if len(os.Args) < 2 {
 		fmt.Fprintf(os.Stderr, "usage: mygit <command> [<args>...]\n")

starter_templates/haskell/code/app/Main.hs

@@ -11,7 +11,7 @@ import System.IO (IOMode (WriteMode), hPutStrLn, withFile)
 main :: IO ()
 main = do
     -- You can use print statements as follows for debugging, they'll be visible when running tests.
-    putStrLn "Logs from your program will appear here"
+    hPutStrLn stderr "Logs from your program will appear here"
 
     -- Uncomment this block to pass first stage
     -- let createParents = True

starter_templates/java/code/src/main/java/Main.java

@@ -5,7 +5,7 @@
 public class Main {
   public static void main(String[] args){
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    System.out.println("Logs from your program will appear here!");
+    System.err.println("Logs from your program will appear here!");
 
     // Uncomment this block to pass the first stage
     //

starter_templates/javascript/code/app/main.js

@@ -2,7 +2,7 @@ const fs = require("fs");
 const path = require("path");
 
 // You can use print statements as follows for debugging, they'll be visible when running tests.
-console.log("Logs from your program will appear here!");
+console.error("Logs from your program will appear here!");
 
 // Uncomment this block to pass the first stage
 // const command = process.argv[2];

starter_templates/python/code/app/main.py

@@ -4,7 +4,7 @@
 
 def main():
     # You can use print statements as follows for debugging, they'll be visible when running tests.
-    print("Logs from your program will appear here!")
+    print("Logs from your program will appear here!", file=sys.stderr)
 
     # Uncomment this block to pass the first stage
     #

starter_templates/ruby/code/app/main.rb

@@ -1,5 +1,5 @@
 # You can use print statements as follows for debugging, they'll be visible when running tests.
-puts "Logs from your program will appear here!"
+$stderr.puts "Logs from your program will appear here!"
 
 # Uncomment this block to pass the first stage
 #

starter_templates/rust/code/src/main.rs

@@ -5,7 +5,7 @@ use std::fs;
 
 fn main() {
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    println!("Logs from your program will appear here!");
+    eprintln!("Logs from your program will appear here!");
 
     // Uncomment this block to pass the first stage
     // let args: Vec<String> = env::args().collect();

starter_templates/typescript/code/app/main.ts

@@ -10,7 +10,7 @@ enum Commands {
 switch (command) {
     case Commands.Init:
         // You can use print statements as follows for debugging, they'll be visible when running tests.
-        console.log("Logs from your program will appear here!");
+        console.error("Logs from your program will appear here!");
 
         // Uncomment this block to pass the first stage
         // fs.mkdirSync(".git", { recursive: true });

starter_templates/zig/code/src/main.zig

@@ -17,7 +17,7 @@ pub fn main() !void {
     const command: []const u8 = args[1];
 
     // You can use print statements as follows for debugging, they'll be visible when running tests.
-    try stdout.print("Logs from your program will appear here\n", .{});
+    std.debug.print("Logs from your program will appear here!\n", .{});
 
     if (std.mem.eql(u8, command, "init")) {
         // Uncomment this block to pass the first stage