commit: Don't uselessly call #'nreverse, #'hash-table-key-list and friends.
changeset: 5271:2def0d83a5e3
tag: tip
user: Aidan Kehoe <kehoea(a)parhasard.net>
date: Thu Sep 16 16:46:27 2010 +0100
files: lisp/ChangeLog lisp/behavior.el lisp/hash-table.el
description:
Don't uselessly call #'nreverse, #'hash-table-key-list and friends.
2010-09-16 Aidan Kehoe <kehoea(a)parhasard.net>
* hash-table.el (hash-table-key-list, hash-table-value-list)
(hash-table-key-value-alist, hash-table-key-value-plist):
Remove some useless #'nreverse calls in these files; our hash
tables have no order, it's not helpful to pretend they do.
* behavior.el (read-behavior):
Do the same in this file, in some code evidently copied from
hash-table.el.
diff -r 3acaa0fc09be -r 2def0d83a5e3 lisp/ChangeLog
--- a/lisp/ChangeLog Thu Sep 16 15:58:10 2010 +0100
+++ b/lisp/ChangeLog Thu Sep 16 16:46:27 2010 +0100
＠＠ -1,3 +1,13 ＠＠
+2010-09-16 Aidan Kehoe <kehoea(a)parhasard.net>
+
+ * hash-table.el (hash-table-key-list, hash-table-value-list)
+ (hash-table-key-value-alist, hash-table-key-value-plist):
+ Remove some useless #'nreverse calls in these files; our hash
+ tables have no order, it's not helpful to pretend they do.
+ * behavior.el (read-behavior):
+ Do the same in this file, in some code evidently copied from
+ hash-table.el.
+
2010-09-16 Aidan Kehoe <kehoea(a)parhasard.net>
* info.el (Info-insert-dir):
diff -r 3acaa0fc09be -r 2def0d83a5e3 lisp/behavior.el
--- a/lisp/behavior.el Thu Sep 16 15:58:10 2010 +0100
+++ b/lisp/behavior.el Thu Sep 16 16:46:27 2010 +0100
＠＠ -349,15 +349,11 ＠＠
(let ((result
(completing-read
prompt
- (let ((table (let (lis)
- (maphash #'(lambda (key val)
- (push (cons key val) lis))
- behavior-hash-table)
- (nreverse lis))))
- (mapc #'(lambda (aentry)
- (setcar aentry (symbol-name (car aentry))))
- table)
- table)
+ (let (list)
+ (maphash #'(lambda (key value)
+ (push (cons (symbol-name key) value) list))
+ behavior-hash-table)
+ list)
nil must-match initial-contents (or history 'behavior-history)
default-value)))
(if (and result (stringp result))
diff -r 3acaa0fc09be -r 2def0d83a5e3 lisp/hash-table.el
--- a/lisp/hash-table.el Thu Sep 16 15:58:10 2010 +0100
+++ b/lisp/hash-table.el Thu Sep 16 16:46:27 2010 +0100
＠＠ -37,34 +37,27 ＠＠
(defun hash-table-key-list (hash-table)
"Return a list of all keys in HASH-TABLE."
- (let (lis)
- (maphash #'(lambda (key val)
- (push key lis))
- hash-table)
- (nreverse lis)))
+ (let (list)
+ (maphash #'(lambda (key value) (push key list)) hash-table)
+ list))
(defun hash-table-value-list (hash-table)
"Return a list of all values in HASH-TABLE."
- (let (lis)
- (maphash #'(lambda (key val)
- (push val lis))
- hash-table)
- (nreverse lis)))
+ (let (list)
+ (maphash #'(lambda (key value) (push value list)) hash-table)
+ list))
(defun hash-table-key-value-alist (hash-table)
"Return an alist of (KEY . VALUE) for all keys and values in HASH-TABLE."
- (let (lis)
- (maphash #'(lambda (key val)
- (push (cons key val) lis))
+ (let (list)
+ (maphash #'(lambda (key value) (setq list (acons key value list)))
hash-table)
- (nreverse lis)))
+ list))
(defun hash-table-key-value-plist (hash-table)
"Return a plist for all keys and values in HASH-TABLE.
A plist is a simple list containing alternating keys and values."
- (let (lis)
- (maphash #'(lambda (key val)
- (push key lis)
- (push val lis))
+ (let (list)
+ (maphash #'(lambda (key value) (setq list (list* key value list)))
hash-table)
- (nreverse lis)))
+ list))
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