Helper functions

Molecule List.
Back to view instead of margins for stack due to background color issues.
Standard Header View to margin for internal use.

MVMCore/MVMCore/Categories/Dictionary+MFConvenience.swift

@@ -123,6 +123,13 @@ public extension Dictionary {
         return floatValue
     }
     
+    func optionalCGFloatForKey(_ key: String) -> CGFloat? {
+        guard let key = key as? Key else {
+            return nil
+        }
+        return self[key] as? CGFloat
+    }
+    
     func floatFromStringForKey(_ key:String) -> Float {
         
         let stringValue = stringForkey(key)

MVMCore/MVMCore/Utility/Helpers/MVMCoreGetterUtility+Extension.swift

@@ -10,10 +10,18 @@ import Foundation
 
 public extension MVMCoreGetterUtility {
     class func fequal(a: Float ,b: Float) -> Bool {
-        return (abs((a) - (b)) < Float.ulpOfOne)
+        return fequalwiththreshold(a, b, Float.ulpOfOne)
     }
     
     class func cgfequal(_ a: CGFloat ,_ b: CGFloat) -> Bool {
-        return (abs((a) - (b)) < CGFloat.ulpOfOne)
+        return cgfequalwiththreshold(a, b, CGFloat.ulpOfOne)
+    }
+    
+    class func fequalwiththreshold(_ a: Float,_ b: Float,_ c: Float) -> Bool {
+        return (abs((a) - (b)) < c)
+    }
+    
+    class func cgfequalwiththreshold(_ a: CGFloat ,_ b: CGFloat,_ c: CGFloat) -> Bool {
+        return (abs((a) - (b)) < c)
     }
 }