Fixed DataFrame>>collect:

Author: olekscode

src/DataFrame/DataFrame.class.st

@@ -481,8 +481,8 @@ DataFrame >> collect: aBlock [
 	"Overrides the Collection>>collect to create DataFrame with the same number of columns as values in the first row"
 	| firstRow newDataFrame |
 
-	firstRow := (self rowAt: 1) copy.
-	newDataFrame := self class new: 0@(aBlock value: firstRow) size.
+	firstRow := aBlock value: (self rowAt: 1) copy.
+	newDataFrame := self class new: 0@firstRow size.
 	newDataFrame columnNames: firstRow keys.
 
 	self do: [:each | newDataFrame add: (aBlock value: each copy)].