Yes that's correct. om.core/value will give you the rendered value, deref will give you the current state.
David On Wed, Oct 15, 2014 at 12:38 PM, Leon Grapenthin <[email protected]> wrote: > On Tuesday, October 14, 2014 7:58:28 PM UTC+2, David Nolen wrote: >> om.core/value, om.core/path, om.core/state are not going to change and >> >> can be used. > > Thank you for clearing that up > >> In the case of om.core/value the value may well be stale >> >> - thus deref - but even then the value may have been deleted. >> > > With om.core/value the user can rely that only the value /she can see/ could > be deleted (if it is still up to date), because it is consistent with what > was rendered to her. > > With deref, a value that /she has not yet seen/ could be deleted, because it > could have been changed but not yet rendered. > > Is this correct? > >> >> >> David >> >> >> >> On Tue, Oct 14, 2014 at 1:43 PM, Leon Grapenthin >> >> <[email protected]> wrote: >> >> > Thank you, Moritz. However, since it is not documented, how do you know? >> > By study of the implementation? >> >> > >> >> > Since there is not a single defn- in om.core, is it really API exposed and >> > there to stay? >> >> > >> >> > Would using it like I suggested in the example really have consistency >> > benefits? >> >> > >> >> > >> >> > On Sunday, October 12, 2014 11:48:54 PM UTC+2, Moritz Ulrich wrote: >> >> >> Am 12.10.2014 21:33 schrieb "Leon Grapenthin" <[email protected]>: >> >> >> >> >> >> > >> >> >> >> >> >> > Regarding this >> >> > (https://github.com/swannodette/om/wiki/Basic-Tutorial#debugging-om-components) >> >> > section of the om tutorial: >> >> >> >> >> >> > >> >> >> >> >> >> > Couldn't the click handler in theory delete a version of the contact >> >> > that has not been rendered to the user? >> >> >> >> >> >> > >> >> >> >> >> >> > E. g. Wouldn't >> >> >> >> >> >> > >> >> >> >> >> >> > #js {:onClick (let [rendered-contact (into {} contact)] >> >> >> >> >> >> > (fn [e] (put! delete rendered-contact)))} >> >> >> >> >> >> > >> >> >> >> >> >> > be the only way to make the click handler consistent with what is >> >> > displayed to the user? - If so, could we get an operation to retrieve >> >> > the rendered value during the render phase as non-cursor to close over >> >> > it (probably also deref)? >> >> >> >> >> >> `om/value' >> >> >> >> >> >> > If not, how should I take "Thus you are not allowed to use cursors >> >> > outside of the render phase as this is almost certainly a concurrency >> >> > bug!" - How exactly is that /not/ what we are doing in the click >> >> > handler of the tutorial? >> >> >> >> >> >> > >> >> >> >> >> >> > If it doesn't make a difference, please explain why. >> >> >> >> >> >> > >> >> >> >> >> >> > -- >> >> >> >> >> >> > 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.
