Rather than use identity, I usually do this: #(vector :th %)
On 3 August 2014 21:11, Shaun Gilchrist <[email protected]> wrote: > identity is just a function that returns its argument. It may be more > readable to do #(vec [:th %]). And just for golf-sake you could also do > (map (partial conj [:th]) weekdays). All that said I think the "for" > approach is the easiest to read. > > > On Sun, Aug 3, 2014 at 12:54 PM, Paul Cowan <[email protected]> wrote: > >> Right in both counts, thanks! >> >> Could you explain why identity is needed in this instance, I'm new to >> clojure and I don't quite get why it is need specifically here. >> >> Cheers >> >> Paul Cowan >> >> Cutting-Edge Solutions (Scotland) >> >> blog: http://thesoftwaresimpleton.com/ >> website: http://www.cuttingedgesolutionsscotland.com/ >> >> >> On 3 August 2014 19:31, Shaun Gilchrist <[email protected]> wrote: >> >>> Consider that what you are doing expands to the application of a vector >>> to nothing (thus the error): >>> >>> (fn [x] ([:th x])) >>> >>> What you are most likely after is #(identity [:th %]] >>> >>> But perhaps more readably - [:tr (for [day weekdays] [:th day])] >>> >>> >>> >>> On Sun, Aug 3, 2014 at 11:18 AM, Paul Cowan <[email protected]> wrote: >>> >>>> Hi, >>>> >>>> Sorry that was a typo on my part, that is what I have and it still >>>> gives the same error: >>>> >>>> >>>> [:table.table.table-striped.table-bordered.table-hover >>>> [:thead >>>> [:tr (map #([:th %]) weekdays)]]]])))) >>>> >>>> And it gives the error: >>>> >>>> >>>> Uncaught Error: Invalid arity: 1 >>>> Is this a clojurescript error? Can you not use anonymous functions in >>>> clojurescript >>>> >>>> >>>> Cheers >>>> >>>> Paul Cowan >>>> >>>> Cutting-Edge Solutions (Scotland) >>>> >>>> blog: http://thesoftwaresimpleton.com/ >>>> website: http://www.cuttingedgesolutionsscotland.com/ >>>> >>>> >>>> On 3 August 2014 18:08, Johann Bestowrous <[email protected]> >>>> wrote: >>>> >>>>> Hey Paul-- >>>>> >>>>> try this: >>>>> >>>>> [:table.table >>>>> [:thead >>>>> [:tr (map #([:th %]) weekdays)]]]] >>>>> >>>>> #() is an anonymous function literal. >>>>> >>>>> On Sunday, August 3, 2014 5:53:47 AM UTC-7, Paul Cowan wrote: >>>>> > I am using om and soblano and I have a map function that works when >>>>> I declare at like this, on the last line of the function below: >>>>> > >>>>> > >>>>> > >>>>> > (defn ical [data] >>>>> > (reify >>>>> > om/IDisplayName >>>>> > >>>>> > (display-name [_] >>>>> > (or (:react-name opts) "calendar")) >>>>> > om/IRender >>>>> > (render [this] >>>>> > (html/html [:div >>>>> > [:div.calendar-toolbar >>>>> > >>>>> > [:div.btn-group.pull-right >>>>> > [:a.right {:href "#"} "Right"] >>>>> > [:a.left {:href "#"} "Left"]] >>>>> > >>>>> > [:h3 "August 2014"]] >>>>> > [:table.table >>>>> > [:thead >>>>> > [:tr (map (fn [day] [:th day]) >>>>> weekdays)]]]])))) >>>>> > >>>>> > >>>>> > >>>>> > But when I try and use the map with the anonymous function syntax >>>>> like this: >>>>> > >>>>> > >>>>> > [:table.table >>>>> > [:thead >>>>> > [:tr (map ([:th %]) weekdays)]]]])))) >>>>> > >>>>> > >>>>> > I get the following error: >>>>> > >>>>> > Uncaught Error: Invalid arity: 1 >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > Cheers >>>>> > >>>>> > Paul Cowan >>>>> > >>>>> > Cutting-Edge Solutions (Scotland) >>>>> > >>>>> > >>>>> > blog: http://thesoftwaresimpleton.com/ >>>>> > >>>>> > website: http://www.cuttingedgesolutionsscotland.com/ >>>>> >>>>> -- >>>>> Note that posts from new members are moderated - please be patient >>>>> with your first post. >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "ClojureScript" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To post to this group, send email to [email protected]. >>>>> Visit this group at http://groups.google.com/group/clojurescript. >>>>> >>>> >>>> -- >>>> Note that posts from new members are moderated - please be patient with >>>> your first post. >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "ClojureScript" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at http://groups.google.com/group/clojurescript. >>>> >>> >>> -- >>> Note that posts from new members are moderated - please be patient with >>> your first post. >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "ClojureScript" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/clojurescript. >>> >> >> -- >> Note that posts from new members are moderated - please be patient with >> your first post. >> --- >> You received this message because you are subscribed to the Google Groups >> "ClojureScript" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/clojurescript. >> > > -- > Note that posts from new members are moderated - please be patient with > your first post. > --- > You received this message because you are subscribed to the Google Groups > "ClojureScript" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/clojurescript. > -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. 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