extensions.coffee in material_raingular-0.0.2.4.8

- old
+ new

@@ -1,8 +1,34 @@
+Array.prototype.empty = ->
+  this.length == 0
+Array.prototype.present = ->
+  this.length != 0
 Array.prototype.min = ->
   return Math.min.apply(null,this)
 Array.prototype.max = ->
   return Math.max.apply(null,this)
+Array.prototype.railsMap = (func)->
+  args = func.match(/\|(.*)\|,(.*)/) || []
+  throw 'Invalid syntax "|a|, a.b"' unless args.length == 3
+  arr = []
+  for obj in this
+    eval args[1] + '= obj'
+    arr.push eval args[2]
+  arr
+Array.prototype.compact = ->
+  arr = []
+  for i in this
+    arr.push(i) if !!i or i == false
+  arr
+Array.prototype.flatten = ->
+  arr = []
+  for l in this
+    if Array.isArray(l)
+      for i in l.flatten()
+        arr.push i
+    else
+      arr.push l
+  arr
 Array.prototype.sum = ->
   total = 0
   for i in this
     total += parseFloat(i) if i
   total