Introduce apply as alternative to :=

scalatags/src/scalatags/generic/Attrs.scala

@@ -64,6 +64,7 @@ trait GlobalAttrs[Builder, Output <: FragT, FragT]
     def selectDynamic(s: String) = new DataAttribute(s :: sections)
     def :=[T](v: T)(implicit ev: AttrValue[Builder, T]) =
       AttrPair(Attr(sections.reverse.mkString("-")), v, ev)
+    def apply[T](v: T)(implicit ev: AttrValue[Builder, T]) = :=(v)(ev)
   }
   def data(suffix: String) = Attr("data-" + suffix)
   /**

scalatags/src/scalatags/generic/Core.scala

@@ -111,6 +111,7 @@ case class Attr(name: String, namespace: Option[Namespace] = None, raw: Boolean
     requireNonNull(v)
     AttrPair(this, v, ev)
   }
+  def apply[Builder, T](v: T)(implicit ev: AttrValue[Builder, T]) = :=(v)(ev)
 
   def empty[Builder](implicit ev: AttrValue[Builder, String]) = this := name
 }
@@ -127,6 +128,7 @@ case class Style(jsName: String, cssName: String) {
     requireNonNull(v)
     StylePair(this, v, ev)
   }
+  def apply[Builder, T](v: T)(implicit ev: StyleValue[Builder, T]) = :=(v)(ev)
 }
 /**
  * Wraps up a CSS style in a value.
@@ -141,6 +143,7 @@ case class PixelStyle(jsName: String, cssName: String) {
     requireNonNull(v)
     ev(realStyle, v)
   }
+  def apply[Builder, T](v: T)(implicit ev: PixelStyleValue[Builder, T]) = :=(v)(ev)
 
 }
 trait StyleProcessor{
@@ -157,6 +160,7 @@ case class AttrPair[Builder, T](a: Attr, v: T, ev: AttrValue[Builder, T]) extend
     requireNonNull(v)
     AttrPair(a, v, ev)
   }
+  def apply[Builder, T](v: T)(implicit ev: AttrValue[Builder, T]) = :=(v)(ev)
 }
 /**
  * Used to specify how to handle a particular type [[T]] when it is used as

scalatags/src/scalatags/generic/Styles.scala

@@ -442,6 +442,7 @@ trait Styles2[Builder, Output <: FragT, FragT] extends StyleMisc[Builder, Output
    */
   object columns extends Style("columns", "columns") {
     def :=(number: Int, width: String): StylePair[Builder, String] = this := s"$number $width"
+    def apply(number: Int, width: String): StylePair[Builder, String] = this.:=(number, width)
   }
 
   /**
@@ -1174,6 +1175,7 @@ trait Styles[Builder, Output <: FragT, FragT] extends StyleMisc[Builder, Output,
    */
   object borderSpacing extends Style("borderSpacing", "border-spacing") {
     def :=(horizontal: String, vertical: String): StylePair[Builder, String] = this := s"$horizontal $vertical"
+    def apply(horizontal: String, vertical: String): StylePair[Builder, String] = this.:=(horizontal, vertical)
   }
 
 

scalatags/test/src/scalatags/generic/BasicTests.scala

@@ -131,6 +131,18 @@ class BasicTests[Builder, Output <: FragT, FragT](omg: Bundle[Builder, Output, F
         """<a tabindex="1" onclick="lol" href="boo" alt="g"></a>"""
       )
     }
+    test("apply instead of :="){
+      strCheck(
+        a(
+          tabindex(1),
+          onclick("lol")
+        )(
+          href("boo"),
+          alt("g")
+        ),
+        """<a tabindex="1" onclick="lol" href="boo" alt="g"></a>"""
+      )
+    }
     test("autoPixel"){
       strCheck(
         div(width:=100, zIndex:=100, height:=100),

scalatags/test/src/scalatags/generic/StyleSheetTests.scala

@@ -19,7 +19,7 @@ abstract class StyleSheetTests[Builder, Output <: FragT, FragT]
       height := 125
     )
     val y = cls.hover(
-      opacity := 0.5
+      opacity(0.5)
     )
 
     val z = cls(x.splice, y.splice)