Add string instructions

src/propeller/gp.cljc

@@ -7,7 +7,6 @@
             [propeller.push.instructions.code]
             [propeller.push.instructions.input-output]
             [propeller.push.instructions.numeric]
-            [propeller.push.instructions.random]
             [propeller.push.instructions.polymorphic]
             [propeller.push.instructions.string]
             [propeller.push.instructions.vector]))
@@ -23,7 +22,7 @@
     (print "Best program: ") (prn (genome/plushy->push (:plushy best)))
     (println "Best total error:" (:total-error best))
     (println "Best errors:" (:errors best))
-    (println "Best behaviors:" (map clojure.string/trim (:behaviors best)))
+    (println "Best behaviors:" (:behaviors best))
     (println "Genotypic diversity:"
              (float (/ (count (distinct (map :plushy pop))) (count pop))))
     (println "Average genome length:"
@@ -60,7 +59,9 @@
               (println "Test cases failed."))
             (#?(:clj shutdown-agents)))
         ;;
-        (>= generation max-generations) nil
+        (>= generation max-generations)
+        nil
+        ;;
         :else (recur (inc generation)
                      (if (:elitism argmap)
                        (conj (repeatedly (dec population-size)

src/propeller/problems/software/number_io.cljc

@@ -76,13 +76,15 @@
                             (:step-limit argmap))
                           :output))
                       inputs)
+         parsed-outputs (map (fn [output]
+                               (try (read-string output)
+                                    (catch Exception e 1000.0)))
+                             outputs)
          errors (map (fn [correct-output output]
-                       (let [parsed-output (try (read-string output)
+                       (min 1000.0 (math/abs (- correct-output output))))
-                                                (catch Exception e 1000.0))]
-                         (min 1000.0 (math/abs (- correct-output parsed-output)))))
                      correct-outputs
-                     outputs)]
+                     parsed-outputs)]
      (assoc individual
-       :behaviors outputs
+       :behaviors parsed-outputs
        :errors errors
        :total-error (apply +' errors)))))

src/propeller/push/instructions/bool.cljc

@@ -55,14 +55,14 @@
 
 ;; Pushes FALSE if the top FLOAT is 0.0, and TRUE otherwise
 (def-instruction
-  :boolean_fromfloat
+  :boolean_from_float
   ^{:stacks #{:boolean :float}}
   (fn [state]
     (make-instruction state #(not (zero? %)) [:float] :boolean)))
 
 ;; Pushes FALSE if the top INTEGER is 0, and TRUE otherwise
 (def-instruction
-  :boolean_frominteger
+  :boolean_from_integer
   ^{:stacks #{:boolean :integer}}
   (fn [state]
     (make-instruction state #(not (zero? %)) [:integer] :boolean)))

src/propeller/push/instructions/character.cljc

@@ -11,14 +11,14 @@
 
 ;; Pushes TRUE onto the BOOLEAN stack if the popped character is a letter
 (def-instruction
-  :char_isletter
+  :char_is_letter
   ^{:stacks #{:boolean :char}}
   (fn [state]
     (make-instruction state char/is-letter [:char] :boolean)))
 
 ;; Pushes TRUE onto the BOOLEAN stack if the popped character is a digit
 (def-instruction
-  :char_isdigit
+  :char_is_digit
   ^{:stacks #{:boolean :char}}
   (fn [state]
     (make-instruction state char/is-digit [:char] :boolean)))
@@ -26,7 +26,7 @@
 ;; Pushes TRUE onto the BOOLEAN stack if the popped character is whitespace
 ;; (newline, space, or tab)
 (def-instruction
-  :char_iswhitespace
+  :char_is_whitespace
   ^{:stacks #{:boolean :char}}
   (fn [state]
     (make-instruction state char/is-whitespace [:char] :boolean)))
@@ -36,7 +36,7 @@
 ;; 128 will be reduced modulo 128. For instance, 248.45 will result in x being
 ;; pushed.
 (def-instruction
-  :char_fromfloat
+  :char_from_float
   ^{:stacks #{:char :float}}
   (fn [state]
     (make-instruction state #(char (mod (long %) 128)) [:float] :char)))
@@ -45,7 +45,7 @@
 ;; value onto the CHAR stack. Integers larger than 128 will be reduced modulo
 ;; 128. For instance, 248 will result in x being pushed
 (def-instruction
-  :char_frominteger
+  :char_from_integer
   ^{:stacks #{:char :integer}}
   (fn [state]
     (make-instruction state #(char (mod % 128)) [:integer] :char)))
@@ -54,7 +54,7 @@
 ;; onto the CHAR stack, in order. For instance, "hello" will result in the
 ;; top of the CHAR stack being \h \e \l \l \o
 (def-instruction
-  :char_allfromstring
+  :char_all_from_string
   ^{:stacks #{:char :string}}
   (fn [state]
     (if (state/empty-stack? state :string)

src/propeller/push/instructions/code.cljc

@@ -5,16 +5,6 @@
             [propeller.push.utils.macros :refer [def-instruction
                                                  generate-instructions]]))
 
-;; =============================================================================
-;; Polymorphic Instructions
-;; =============================================================================
-
-(def _noop
-  ^{:stacks #{}}
-  (fn [stack state] state))
-
-(generate-instructions [:exec :code] [_noop])
-
 ;; =============================================================================
 ;; CODE Instructions
 ;; =============================================================================
@@ -46,7 +36,7 @@
 ;; is pushed onto the EXEC stack for subsequent execution. If the integers are
 ;; not equal, then the current index will still be pushed onto the INTEGER stack
 ;; but two items will be pushed onto the EXEC stack - first a recursive call to
-;; :exec_do*range (with the same code and destination index, but with a current
+;; :exec_do_range (with the same code and destination index, but with a current
 ;; index that has been either incremented or decremented by 1 to be closer to
 ;; the destination index) and then the body code. Note that the range is
 ;; inclusive of both endpoints; a call with integer arguments 3 and 5 will cause
@@ -54,7 +44,7 @@
 ;; 4, and 5. Note also that one can specify a loop that "counts down" by
 ;; providing a destination index that is less than the specified current index.
 (def-instruction
-  :exec_do*range
+  :exec_do_range
   ^{:stacks #{:exec :integer}}
   (fn [state]
     (if (or (state/empty-stack? state :exec)
@@ -76,7 +66,7 @@
                                                 :exec
                                                 (list (+' current-index increment)
                                                       destination-index
-                                                      :exec_do*range
+                                                      :exec_do_range
                                                       to-do)))]
         (state/push-to-stack
           (state/push-to-stack continuation :integer current-index) :exec to-do)))))
@@ -86,7 +76,7 @@
 ;; total number of iterations) onto the INTEGER stack prior to each execution
 ;; of the loop body. If the top INTEGER argument is <= 0, this becomes a NOOP
 (def-instruction
-  :exec_do*count
+  :exec_do_count
   ^{:stacks #{:exec :integer}}
   (fn [state]
     (if (or (state/empty-stack? state :integer)
@@ -98,12 +88,12 @@
             popped-state (state/pop-stack (state/pop-stack state :exec) :integer)]
         (state/push-to-stack popped-state :exec (list 0
                                                       (dec index)
-                                                      :exec_do*range
+                                                      :exec_do_range
                                                       to-do))))))
 
-;; Like :exec_do*count, but does not push the loop counter onto the INTEGER stack
+;; Like :exec_do_count, but does not push the loop counter onto the INTEGER stack
 (def-instruction
-  :exec_do*times
+  :exec_do_times
   ^{:stacks #{:exec :integer}}
   (fn [state]
     (if (or (state/empty-stack? state :integer)
@@ -116,7 +106,7 @@
             popped-state (state/pop-stack (state/pop-stack state :exec) :integer)]
         (state/push-to-stack popped-state :exec (list 0
                                                       (dec index)
-                                                      :exec_do*range
+                                                      :exec_do_range
                                                       to-do-with-pop))))))
 
 ;; If the top BOOLEAN is TRUE, removes the the second item on the EXEC stack,
@@ -159,7 +149,7 @@
 ;; the BOOLEAN stack is true. Differs from :exec_while in that it executes
 ;; the top instruction at least once
 (def-instruction
-  :exec_do*while
+  :exec_do_while
   ^{:stacks #{:boolean :exec}}
   (fn [state]
     (if (state/empty-stack? state :exec)

src/propeller/push/instructions/numeric.cljc

@@ -84,7 +84,7 @@
     (make-instruction state min [stack stack] stack)))
 
 ;; Pushes 1 / 1.0 if the top BOOLEAN is TRUE, or 0 / 0.0 if FALSE
-(def _fromboolean
+(def _from_boolean
   ^{:stacks #{:boolean}}
   (fn [stack state]
     (make-instruction state
@@ -93,14 +93,14 @@
                       stack)))
 
 ;; Pushes the ASCII value of the top CHAR
-(def _fromchar
+(def _from_char
   ^{:stacks #{:char}}
   (fn [stack state]
     (make-instruction state (if (= stack :integer) int float) [:char] stack)))
 
 ;; Pushes the value of the top STRING, if it can be parsed as a number.
 ;; Otherwise, acts as a NOOP
-(def _fromstring
+(def _from_string
   ^{:stacks #{:string}}
   (fn [stack state]
     (make-instruction state
@@ -125,7 +125,7 @@
 (generate-instructions
   [:float :integer]
   [_gt _gte _lt _lte _add _subtract _mult _quot _mod _max _min _inc _dec
-   _fromboolean _fromchar _fromstring])
+   _from_boolean _from_char _from_string])
 
 ;; =============================================================================
 ;; FLOAT Instructions only
@@ -154,7 +154,7 @@
 
 ;; Pushes the floating point version of the top INTEGER
 (def-instruction
-  :float_frominteger
+  :float_from_integer
   ^{:stacks #{:float :integer}}
   (fn [state]
     (make-instruction state float [:integer] :float)))
@@ -165,7 +165,7 @@
 
 ;; Pushes the result of truncating the top FLOAT towards negative infinity
 (def-instruction
-  :integer_fromfloat
+  :integer_from_float
   ^{:stacks #{:float :integer}}
   (fn [state]
     (make-instruction state int [:float] :integer)))

src/propeller/push/instructions/polymorphic.cljc

@@ -26,7 +26,7 @@
 ;; number n is determined by the top INTEGER. For n = 0, equivalent to POP.
 ;; For n = 1, equivalent to NOOP. For n = 2, equivalent to DUP. Negative values
 ;; of n are treated as 0
-(def _duptimes
+(def _dup_times
   ^{:stacks #{:integer}}
   (fn [stack state]
     (if (or (and (= stack :integer)
@@ -46,7 +46,7 @@
 ;; Duplicates the top n items on the stack, one time each. The number n is
 ;; determined by the top INTEGER. If n <= 0, no items will be duplicated. If
 ;; fewer than n items are on the stack, the entire stack will be duplicated.
-(def _dupitems
+(def _dup_items
   ^{:stacks #{:integer}}
   (fn [stack state]
     (if (state/empty-stack? state :integer)
@@ -114,7 +114,7 @@
       state)))
 
 ;; Pushes the given stack's depth onto the INTEGER stack
-(def _stackdepth
+(def _stack_depth
   ^{:stacks #{:integer}}
   (fn [stack state]
     (let [stack-depth (count (get state stack))]
@@ -152,7 +152,7 @@
 
 ;; Pushes a copy of an indexed item from deep in the stack, without removing it.
 ;; The top INTEGER is used to determine how deep to yankdup from
-(def _yankdup
+(def _yank_dup
   ^{:stacks #{:integer}}
   (fn [stack state]
     (if (or (and (= stack :integer)
@@ -171,5 +171,5 @@
 (generate-instructions
   [:boolean :char :code :exec :float :integer :string
    :vector_boolean :vector_float :vector_integer :vector_string]
-  [_dup _duptimes _dupitems _empty _eq _flush _pop _rot _shove
+  [_dup _dup_times _dup_items _empty _eq _flush _pop _rot _shove
-   _stackdepth _swap _yank _yankdup])
+   _stack_depth _swap _yank _yank_dup])

src/propeller/push/instructions/random.cljc

@@ -1,7 +0,0 @@
-(ns propeller.push.instructions.random
-  (:require [propeller.push.state :as state]
-            [propeller.push.utils.helpers :refer [make-instruction]]
-            [propeller.push.utils.macros :refer [def-instruction
-                                                 generate-instructions]]))
-
-

src/propeller/push/instructions/string.cljc

@@ -1,47 +1,297 @@
 (ns propeller.push.instructions.string
-  (:require [propeller.push.utils.helpers :refer [make-instruction]]
+  (:require [clojure.string :as string]
-            [propeller.push.utils.macros :refer [def-instruction]]))
+            [propeller.utils :as utils]
+            [propeller.push.utils.helpers :refer [make-instruction]]
+            [propeller.push.utils.macros :refer [def-instruction]]
+            [propeller.push.state :as state]))
 
 ;; =============================================================================
 ;; STRING Instructions
 ;; =============================================================================
 
+;; Pushes the butlast of the top STRING (i.e. the string without its last letter)
 (def-instruction
-  :string_=
+  :string_butlast
-  ^{:stacks #{:boolean :string}}
+  ^{:stacks #{:string}}
   (fn [state]
-    (make-instruction state = [:string :string] :boolean)))
+    (make-instruction state #(apply str (butlast %)) [:string] :string)))
 
+;; Pushes the concatenation of the top two STRINGs (second + first)
 (def-instruction
   :string_concat
   ^{:stacks #{:string}}
   (fn [state]
-    (make-instruction state #(apply str (concat %1 %2)) [:string :string] :string)))
+    (make-instruction state str [:string :string] :string)))
 
+;; Pushes the concatenation of the top STRING and the top CHAR (STRING + CHAR)
+(def-instruction
+  :string_conj_char
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state str [:string :char] :string)))
+
+;; Pushes TRUE if the top STRING is a substring of the second STRING, and FALSE
+;; otherwise
+(def-instruction
+  :string_contains
+  ^{:stacks #{:boolean :string}}
+  (fn [state]
+    (make-instruction state string/includes? [:string :string] :boolean)))
+
+;; Pushes TRUE if the top CHAR is contained in the top STRING, and FALSE
+;; otherwise
+(def-instruction
+  :string_contains_char
+  ^{:stacks #{:boolean :char :string}}
+  (fn [state]
+    (make-instruction state #(string/includes? %2 (str %1)) [:char :string] :boolean)))
+
+;; Pushes the top STRING with n characters dropped, where n is taken from the
+;; top of the INTEGER stack
 (def-instruction
   :string_drop
   ^{:stacks #{:integer :string}}
   (fn [state]
     (make-instruction state #(apply str (drop %1 %2)) [:integer :string] :string)))
 
+;; Pushes TRUE if the top STRING is the empty string
 (def-instruction
-  :string_includes?
+  :string_empty_string
+  ^{:stacks #{:string}}
+  (fn [state]
+    (make-instruction state empty? [:string] :boolean)))
+
+;; Pushes the first CHAR of the top STRING
+(def-instruction
+  :string_first
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state first [:string] :char)))
+
+;; Pushes the STRING version of the top BOOLEAN, e.g. "true"
+(def-instruction
+  :string_from_boolean
   ^{:stacks #{:boolean :string}}
   (fn [state]
-    (make-instruction state clojure.string/includes? [:string :string] :boolean)))
+    (make-instruction state str [:boolean] :string)))
 
+;; Pushes the STRING version of the top CHAR, e.g. "a"
+(def-instruction
+  :string_from_char
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state str [:char] :string)))
+
+;; Pushes the STRING version of the top FLOAT e.g. "2.05"
+(def-instruction
+  :string_from_float
+  ^{:stacks #{:float :string}}
+  (fn [state]
+    (make-instruction state str [:float] :string)))
+
+;; Pushes the STRING version of the top INTEGER, e.g. "3"
+(def-instruction
+  :string_from_integer
+  ^{:stacks #{:integer :string}}
+  (fn [state]
+    (make-instruction state str [:integer] :string)))
+
+;; Pushes the index of the top CHAR in the top STRING onto the INTEGER stack.
+;; If the top CHAR is not present in the top string, acts as a NOOP
+(def-instruction
+  :string_indexof_char
+  ^{:stacks #{:char :integer :string}}
+  (fn [state]
+    (make-instruction state string/index-of [:string :char] :integer)))
+
+;; Iterates over the top STRING using code on the EXEC stack
+(def-instruction
+  :string_iterate
+  ^{:stacks #{:char :exec :string}}
+  (fn [state]
+    (if (or (empty? (:string state))
+            (empty? (:exec state)))
+      state
+      (let [top-item (state/peek-stack state :string)
+            popped-state (state/pop-stack state :string)]
+        (cond
+          (empty? top-item)
+          (state/pop-stack popped-state :exec)
+          ;;
+          (empty? (rest top-item))
+          (state/push-to-stack popped-state :char (first top-item))
+          ;;
+          :else
+          (-> popped-state
+              (state/push-to-stack :exec :string_iterate)
+              (state/push-to-stack :exec (apply str (rest top-item)))
+              (state/push-to-stack :exec (state/peek-stack state :exec))
+              (state/push-to-stack :char (first top-item))))))))
+
+;; Pushes the last CHAR of the top STRING
+(def-instruction
+  :string_last
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state last [:string] :char)))
+
+;; Pushes the length of the top STRING onto the INTEGER stack
 (def-instruction
   :string_length
   ^{:stacks #{:integer :string}}
   (fn [state]
     (make-instruction state count [:string] :integer)))
 
+;; Pushes the nth CHAR of the top STRING, where n is taken from the top of the
+;; INTEGER stack. If n exceeds the length of the string, it is reduced modulo
+;; the length of the string
+(def-instruction
+  :string_nth
+  ^{:stacks #{:char :integer :string}}
+  (fn [state]
+    (make-instruction state #(nth %2 (mod %1 (count %2))) [:integer :string] :char)))
+
+;; Pushes the number of times the top CHAR occurs in the top STRING onto the
+;; INTEGER stack
+(def-instruction
+  :string_occurencesof_char
+  ^{:stacks #{:char :integer :string}}
+  (fn [state]
+    (make-instruction state
+                      (fn [char string]
+                        (count (filter #(= char %) string)))
+                      [:char :string]
+                      :integer)))
+
+;; Splits the top string into substrings of length 1 (i.e. into its component
+;; characters) and pushes them back onto the STRING stack in the same order
+(def-instruction
+  :string_parse_to_chars
+  ^{:stacks #{:string}}
+  (fn [state]
+    (if (state/empty-stack? state :string)
+      state
+      (let [top-string (state/peek-stack state :string)
+            char-list (string/split top-string #"")
+            popped-state (state/pop-stack state :string)]
+        (state/push-to-stack-many popped-state :string char-list)))))
+
+;; Pushes the top STRING, with all occurrences of the top CHAR removed
+(def-instruction
+  :string_remove_char
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state
+                      (fn [char string]
+                        (apply str (filter #(not= char %) string)))
+                      [:char :string]
+                      :string)))
+
+;; Pushes the third topmost STRING on stack, with all occurences of the second
+;; topmost STRING replaced by the top STRING
+(def-instruction
+  :string_replace
+  ^{:stacks #{:string}}
+  (fn [state]
+    (make-instruction state
+                      #(string/replace %1 %2 %3)
+                      [:string :string :string]
+                      :string)))
+
+;; Pushes the top STRING, with all occurences of the second topmost CHAR
+;; replaced with the top CHAR
+(def-instruction
+  :string_replace_char
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state
+                      #(string/replace %3 %1 %2)
+                      [:char :char :string]
+                      :string)))
+
+;; Pushes the third topmost STRING on stack, with the first occurence of the
+;; second topmost STRING replaced by the top STRING
+(def-instruction
+  :string_replace_first
+  ^{:stacks #{:string}}
+  (fn [state]
+    (make-instruction state
+                      #(string/replace-first %1 %2 %3)
+                      [:string :string :string]
+                      :string)))
+
+;; Pushes the top STRING, with the first occurence of the second topmost CHAR
+;; replaced with the top CHAR
+(def-instruction
+  :string_replace_first_char
+  ^{:stacks #{:char :string}}
+  (fn [state]
+    (make-instruction state
+                      #(string/replace-first %3 %1 %2)
+                      [:char :char :string]
+                      :string)))
+
+;; Pushes the rest of the top STRING (i.e. the string without its first letter)
+(def-instruction
+  :string_rest
+  ^{:stacks #{:string}}
+  (fn [state]
+    (make-instruction state #(apply str (rest %)) [:string] :string)))
+
+;; Pushes the reverse of the top STRING
 (def-instruction
   :string_reverse
   ^{:stacks #{:string}}
   (fn [state]
     (make-instruction state #(apply str (reverse %)) [:string] :string)))
 
+;; Pushes the top STRING, with the letter at index n (where n is taken from the
+;; INTEGER stack) replaced with the top CHAR. If n is out of bounds, it is
+;; reduced modulo the length of the string
+(def-instruction
+  :string_set_char
+  ^{:stacks #{:char :integer :string}}
+  (fn [state]
+    (make-instruction state
+                      #(let [index (mod %2 (count %3))
+                             beginning (take index %3)
+                             end (drop (inc index) %3)]
+                         (apply str (concat beginning (list %1) end)))
+                      [:char :integer :string]
+                      :string)))
+
+;; Splits the top STRING on whitespace, and pushes back the resulting components
+;; in the same order
+(def-instruction
+  :string_split
+  ^{:stacks #{:string}}
+  (fn [state]
+    (if (state/empty-stack? state :string)
+      state
+      (let [top-item (state/peek-stack state :string)
+            top-item-trimmed (string/trim top-item)
+            string-list (string/split top-item-trimmed #"\s+")
+            popped-state (state/pop-stack state :string)]
+        (state/push-to-stack-many popped-state :string string-list)))))
+
+;; Pushes the substring of the top STRING, with beginning and end indices
+;; determined by the second topmost and topmost INTEGERs respectively. If an
+;; index is out of bounds, the beginning/end of the string is used instead
+(def-instruction
+  :string_substr
+  ^{:stacks #{:integer :string}}
+  (fn [state]
+    (make-instruction state
+                      (fn [start stop string]
+                        (let [length (count string)
+                              start (min length (max 0 start))
+                              stop (min length (max start stop))]
+                          (subs string start stop)))
+                      [:integer :integer :string]
+                      :string)))
+
+;; Pushes the substring of the top STRING consisting of its first n letters,
+;; where n is determined by the top INTEGER
 (def-instruction
   :string_take
   ^{:stacks #{:integer :string}}

src/propeller/push/instructions/vector.cljc

@@ -64,6 +64,30 @@
     (let [lit-stack (get-vector-literal-type stack)]
       (make-instruction state #(utils/indexof %1 %2) [lit-stack stack] :integer))))
 
+;; Iterates over the vector using the code on the exec stack
+(def _iterate
+  ^{:stacks #{:elem :integer}}
+  (fn [stack state]
+    (let [lit-stack (get-vector-literal-type stack)]
+      (if (or (state/empty-stack? state :exec)
+              (state/empty-stack? state stack))
+        state
+        (let [vect (state/peek-stack state stack)
+              popped-state (state/pop-stack state stack)]
+          (cond
+            (empty? vect)
+            (state/pop-stack popped-state :exec)
+            ;;
+            (empty? (rest vect))
+            (state/push-to-stack popped-state lit-stack (first vect))
+            ;;
+            :else
+            (-> popped-state
+                (state/push-to-stack :exec (keyword (str (name stack) "_iterate")))
+                (state/push-to-stack :exec (vec (rest vect)))
+                (state/push-to-stack :exec (state/peek-stack state :exec))
+                (state/push-to-stack lit-stack (first vect)))))))))
+
 ;; Pushes the last item of the top element of the vector stack onto the
 ;; approrpiately-typed literal stack
 (def _last
@@ -195,9 +219,9 @@
   (fn [stack state]
     (make-instruction state #(vec (take %1 %2)) [:integer stack] stack)))
 
-;; 4 types x 20 functions = 80 instructions
+;; 4 types x 21 functions = 84 instructions
 (generate-instructions
   [:vector_boolean :vector_float :vector_integer :vector_string]
-  [_butlast _concat _conj _contains _emptyvector _first _indexof _last
+  [_butlast _concat _conj _contains _emptyvector _first _indexof _iterate
-   _length _nth _occurrencesof _pushall _remove _replace _replacefirst
+   _last _length _nth _occurrencesof _pushall _remove _replace _replacefirst
    _rest _reverse _set _subvec _take])