Init

01.nix

@@ -0,0 +1,3 @@
+{
+  helloWorld = "Hello" + " " + "World";
+}

02.nix

@@ -0,0 +1,4 @@
+# code goes here
+{
+  v="understood";
+}

03.nix

@@ -0,0 +1,8 @@
+let 
+  h = "Hello";
+  w = "World";
+  s = " ";
+in
+{
+  helloWorld = h + s + w;
+}

04.nix

@@ -0,0 +1,6 @@
+let 
+  h = "Hello";
+in
+{
+  helloWorld = "${h} World"; # Modify this line
+}

05.nix

@@ -0,0 +1,7 @@
+let 
+  h = "Strings";
+  value = 4;
+in
+{
+  helloWorld = "${h} ${toString value} the win!";
+}

06.nix

@@ -0,0 +1,8 @@
+let
+  f = "f";
+  o = "o";
+  func = a: b: c: a + b + c; 
+in
+{
+  foo = func f o "o";
+}

07.nix

@@ -0,0 +1,8 @@
+let
+  f = "f";
+  o = "o";
+  func = {a, b, c}: a + b + c; 
+in
+{
+  foo = func {a=f; b=o; c="o";};
+}

08.nix

@@ -0,0 +1,8 @@
+let
+  min = a: b: if (a > b) then b else a; #modify these
+  max = a: b: if (a > b) then a else b; #two lines only
+in
+{
+  ex0 = min 5 3;
+  ex1 = max 9 4;
+}

09.nix

@@ -0,0 +1,11 @@
+let
+  f = "f";
+  o = "o";
+  b = "b";
+  func = {a ? f, b ? "a", c ? ""}: a+b+c; #only modify this line!
+in
+rec {
+  foo = func {b="o"; c=o;}; #must evaluate to "foo"
+  bar = func {a=b; c="r";}; #must evaluate to "bar"
+  foobar = func {a=foo;b=bar;}; #must evaluate to "foobar"
+}

10.nix

@@ -0,0 +1,11 @@
+let
+  arguments = {a="f"; b="o"; c="o"; d="bar";}; #only modify this line
+  func = {a, b, c, ...}: a+b+c; 
+  func2 = args@{a, b, c, ...}: a+b+c+args.d;
+in
+{
+  #the argument d is not used 
+  foo = func arguments;
+  #now the argument d is used
+  foobar = func2 arguments;
+}