diff --git a/caste.go b/caste.go
index 9861392..00ef65a 100644
--- a/caste.go
+++ b/caste.go
@@ -14,7 +14,7 @@ import (
 	"time"
 )
 
-// ToTimeE casts an empty interface to time.Time.
+// ToTimeE casts an interface to a time.Time type.
 func ToTimeE(i interface{}) (tim time.Time, err error) {
 	i = indirect(i)
 
@@ -38,7 +38,7 @@ func ToTimeE(i interface{}) (tim time.Time, err error) {
 	}
 }
 
-// ToDurationE casts an empty interface to time.Duration.
+// ToDurationE casts an interface to a time.Duration type.
 func ToDurationE(i interface{}) (d time.Duration, err error) {
 	i = indirect(i)
 
@@ -64,7 +64,7 @@ func ToDurationE(i interface{}) (d time.Duration, err error) {
 	}
 }
 
-// ToBoolE casts an empty interface to a bool.
+// ToBoolE casts an interface to a bool type.
 func ToBoolE(i interface{}) (bool, error) {
 
 	i = indirect(i)
@@ -86,7 +86,7 @@ func ToBoolE(i interface{}) (bool, error) {
 	}
 }
 
-// ToFloat64E casts an empty interface to a float64.
+// ToFloat64E casts an interface to a float64 type.
 func ToFloat64E(i interface{}) (float64, error) {
 	i = indirect(i)
 
@@ -116,7 +116,7 @@ func ToFloat64E(i interface{}) (float64, error) {
 	}
 }
 
-// ToInt64E casts an empty interface to an int64.
+// ToInt64E casts an interface to an int64 type.
 func ToInt64E(i interface{}) (int64, error) {
 	i = indirect(i)
 
@@ -151,7 +151,7 @@ func ToInt64E(i interface{}) (int64, error) {
 	}
 }
 
-// ToInt32E casts an empty interface to an int32.
+// ToInt32E casts an interface to an int32 type.
 func ToInt32E(i interface{}) (int32, error) {
 	i = indirect(i)
 
@@ -186,7 +186,7 @@ func ToInt32E(i interface{}) (int32, error) {
 	}
 }
 
-// ToInt16E casts an empty interface to an int16.
+// ToInt16E casts an interface to an int16 type.
 func ToInt16E(i interface{}) (int16, error) {
 	i = indirect(i)
 
@@ -221,7 +221,7 @@ func ToInt16E(i interface{}) (int16, error) {
 	}
 }
 
-// ToInt8E casts an empty interface to an int8.
+// ToInt8E casts an interface to an int8 type.
 func ToInt8E(i interface{}) (int8, error) {
 	i = indirect(i)
 
@@ -256,7 +256,7 @@ func ToInt8E(i interface{}) (int8, error) {
 	}
 }
 
-// ToIntE casts an empty interface to an int.
+// ToIntE casts an interface to an int type.
 func ToIntE(i interface{}) (int, error) {
 	i = indirect(i)
 
@@ -330,7 +330,7 @@ func indirectToStringerOrError(a interface{}) interface{} {
 	return v.Interface()
 }
 
-// ToStringE casts an empty interface to a string.
+// ToStringE casts an interface to a string type.
 func ToStringE(i interface{}) (string, error) {
 	i = indirectToStringerOrError(i)
 
@@ -368,7 +368,7 @@ func ToStringE(i interface{}) (string, error) {
 	}
 }
 
-// ToStringMapStringE casts an empty interface to a map[string]string.
+// ToStringMapStringE casts an interface to a map[string]string type.
 func ToStringMapStringE(i interface{}) (map[string]string, error) {
 
 	var m = map[string]string{}
@@ -396,7 +396,7 @@ func ToStringMapStringE(i interface{}) (map[string]string, error) {
 	}
 }
 
-// ToStringMapStringSliceE casts an empty interface to a map[string][]string.
+// ToStringMapStringSliceE casts an interface to a map[string][]string type.
 func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
 
 	var m = map[string][]string{}
@@ -458,7 +458,7 @@ func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
 	return m, nil
 }
 
-// ToStringMapBoolE casts an empty interface to a map[string]bool.
+// ToStringMapBoolE casts an interface to a map[string]bool type.
 func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
 
 	var m = map[string]bool{}
@@ -481,7 +481,7 @@ func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
 	}
 }
 
-// ToStringMapE casts an empty interface to a map[string]interface{}.
+// ToStringMapE casts an interface to a map[string]interface{} type.
 func ToStringMapE(i interface{}) (map[string]interface{}, error) {
 
 	var m = map[string]interface{}{}
@@ -499,7 +499,7 @@ func ToStringMapE(i interface{}) (map[string]interface{}, error) {
 	}
 }
 
-// ToSliceE casts an empty interface to a []interface{}.
+// ToSliceE casts an interface to a []interface{} type.
 func ToSliceE(i interface{}) ([]interface{}, error) {
 
 	var s []interface{}
@@ -520,7 +520,7 @@ func ToSliceE(i interface{}) ([]interface{}, error) {
 	}
 }
 
-// ToBoolSliceE casts an empty interface to a []bool.
+// ToBoolSliceE casts an interface to a []bool type.
 func ToBoolSliceE(i interface{}) ([]bool, error) {
 
 	if i == nil {
@@ -550,7 +550,7 @@ func ToBoolSliceE(i interface{}) ([]bool, error) {
 	}
 }
 
-// ToStringSliceE casts an empty interface to a []string.
+// ToStringSliceE casts an interface to a []string type.
 func ToStringSliceE(i interface{}) ([]string, error) {
 
 	var a []string
@@ -576,7 +576,7 @@ func ToStringSliceE(i interface{}) ([]string, error) {
 	}
 }
 
-// ToIntSliceE casts an empty interface to a []int.
+// ToIntSliceE casts an interface to a []int type.
 func ToIntSliceE(i interface{}) ([]int, error) {
 
 	if i == nil {
@@ -606,7 +606,9 @@ func ToIntSliceE(i interface{}) ([]int, error) {
 	}
 }
 
-// StringToDate casts an empty interface to a time.Time.
+// StringToDate attempts to parse a string into a time.Time type using a
+// predefined list of formats.  If no suitable format is found, an error is
+// returned.
 func StringToDate(s string) (time.Time, error) {
 	return parseDateWith(s, []string{
 		time.RFC3339,