diff --git a/sheets/_cpp/class b/sheets/_cpp/class
index 2d5ef49..5f374f0 100644
--- a/sheets/_cpp/class
+++ b/sheets/_cpp/class
@@ -1,44 +1,44 @@
-// classes are like structs, but everything is by default private. 
+// classes are like structs, but everything is by default private.
 
-// Declaration 
-ObjectName className { 
-    // Sets everything below it to be private. 
+// Declaration
+ObjectName className {
+    // Sets everything below it to be private.
     private:
-        // Declaration of variables 
-        int a; 
+        // Declaration of variables
+        int a;
         string b;
-    
+
         // Implement any private / helper functions below
 
     // Sets everything below it to be public.
     public:
         // Constructor
-        structName(new_a, new_b) { 
-            a = new_a; 
-            b = new_b; 
+        structName(new_a, new_b) {
+            a = new_a;
+            b = new_b;
         }
 
-        // accessors or getters functions 
-        int getA() { 
-            return a; 
+        // accessors or getters functions
+        int getA() {
+            return a;
         }
 
-        string getB() { 
-            return b; 
+        string getB() {
+            return b;
         }
 
-        // mutators or setter functions 
+        // mutators or setter functions
         void setA(int new_a) {
             a = new_a;
         }
 
-        void setB(int new_b) { 
-            b = new_b; 
+        void setB(int new_b) {
+            b = new_b;
         }
 
         // Implement any public functions below
 };
 
-// Accessing PUBLIC variables 
-ObjectName v = structName(5, "Hello");              // Creates a struct via the constructor 
+// Accessing PUBLIC variables
+ObjectName v = structName(5, "Hello");              // Creates a struct via the constructor
 std::cout << v.a << " " << v.b << std::endl;        // Prints to console "5 Hello"
diff --git a/sheets/_cpp/struct b/sheets/_cpp/struct
index 0a8ea27..f4be997 100644
--- a/sheets/_cpp/struct
+++ b/sheets/_cpp/struct
@@ -1,21 +1,21 @@
 // structs are like classes, but everything is by default public
 
-// Declaration 
-ObjectName structName { 
-    
-    // Declaration of variables 
-    int a; 
+// Declaration
+ObjectName structName {
+
+    // Declaration of variables
+    int a;
     string b;
 
     // Constructor
-    structName(new_a, new_b) { 
-        a = new_a; 
-        b = new_b; 
+    structName(new_a, new_b) {
+        a = new_a;
+        b = new_b;
     }
 
     // Implement any public functions below
 };
 
-// Accessing PUBLIC variables 
-ObjectName v = structName(5, "Hello");              // Creates a struct via the constructor 
+// Accessing PUBLIC variables
+ObjectName v = structName(5, "Hello");              // Creates a struct via the constructor
 std::cout << v.a << " " << v.b << std::endl;        // Prints to console "5 Hello"
diff --git a/sheets/_go/if b/sheets/_go/if
index 76975c8..ee41993 100644
--- a/sheets/_go/if
+++ b/sheets/_go/if
@@ -5,14 +5,14 @@ func main() {
     } else {
         return -x
     }
-        
+
     // You can put one statement before the condition
     if a := b + c; a < 42 {
         return a
     } else {
         return a - 42
     }
-    
+
     // Type assertion inside if
     var val interface{}
     val = "foo"
diff --git a/sheets/_mathematica/series b/sheets/_mathematica/series
index b93dc3e..9df03b0 100644
--- a/sheets/_mathematica/series
+++ b/sheets/_mathematica/series
@@ -14,11 +14,11 @@ Series[Cos[x], {x, 0, 6}]
  *
  * Here's the same function, but expanded about a different point, x = 3pi/2:
  *)
- 
+
 Series[Cos[x], {x, 3 Pi/2, 6}]
 (x-3pi/2) - 1/6*(x-3pi/2)^3 + 1/120*(x-3pi/2)^5 + O[x-3pi/2]^7
 
-(* 
+(*
  * When plotting series, remember to wrap the function in both a call to Normal AND
  * a call to Evaluate: this strips the extra term mentioned previously and tells
  * Mathematica to actually evaluate the function rather than hold it as an expression.
diff --git a/sheets/_swift/types b/sheets/_swift/types
index e8d4e8a..2d6557b 100644
--- a/sheets/_swift/types
+++ b/sheets/_swift/types
@@ -8,7 +8,7 @@
 // * Character
 // * Optional − a variable that can hold either a value or no value.
 // * Tuples
-// 
+//
 // | -------|-------------------|-----------------------------------------------|
 // | Type   |  Typical Bit Width|  Typical Range                                |
 // | -------|-------------------|-----------------------------------------------|
@@ -27,7 +27,7 @@
     typealias Feet = Int
     var distance: Feet = 100
     print(distance)
-    
+
 // Type inference:
 //
 // varA is inferred to be of type Int
diff --git a/sheets/azure b/sheets/azure
index cbc38f4..b80c711 100644
--- a/sheets/azure
+++ b/sheets/azure
@@ -3,7 +3,7 @@ sudo apt-get install nodejs-legacy
 sudo apt-get install npm
 sudo npm install -g azure-cli
 
-# This will output an url and a device code for you to use browser to login  
+# This will output an url and a device code for you to use browser to login
 azure login
 
 # This will prompt for your password in the console
@@ -23,7 +23,7 @@ azure vm disk list
 
 # Remove all disks of VMs labeled with LABEL
 for disk in $(azure vm disk list | grep LABEL | awk '{print $2}')
-do 
+do
     azure vm disk delete --blob-delete "$disk"
 done