tag:blogger.com,1999:blog-7056990295646173627.post7715404504460576126..comments2012-02-08T19:44:23.347ZComments on Learning Clojure: Finding Something in a Vector, Parsing CSV FilesJohn Lawrence Aspdenhttp://www.blogger.com/profile/02587130870181071109noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7056990295646173627.post-65454862992663350842012-02-08T19:44:23.347Z2012-02-08T19:44:23.347ZFirstly, (if (f %2) %1) returns nil if (f %2) is f...Firstly, (if (f %2) %1) returns nil if (f %2) is false so the (if (f %s) %1 nil) is redundant. <br /><br />Secondly, if your if isn't going to have a false-branch, then when does read better. <br /><br />Thirdly, when wraps an implicit do whereas if does not which might make a difference to you:<br />(if (f %2) (do (this-thing %1) (that-thing %1) %1))<br />(when (f %2) (this-thing %1) (that-thing %1) %1)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7056990295646173627.post-80688234291572939122011-03-15T21:30:49.446Z2011-03-15T21:30:49.446Z(if (f %2) %1 nil)
could be rewritten as:
(when ...(if (f %2) %1 nil)<br /><br />could be rewritten as:<br /><br />(when (f %2) %1)<br /><br />which I think reads better. Some old Lispers might prefer:<br /><br />(and (f %2) %1)Anonymousnoreply@blogger.com