clojure - Difference between Use, Require and Import -


can 1 give me example answer differentiate between use, require , import.

i hope can me.

require ensures clojure namespace has been compiled , instantiated.

  • optionally updating source if provided :reload key
  • optionally creating aliases if :as key provided.
  • optionally modifying current namespace include mappings required namespace's vars, if :refer key provided. mapping visible inside requiring namespace, , not transitive other namespaces requiring it.

use identical require in action, except default modify current namespace via refer function include target namespace's vars if :refer :all had been provided. accepts :exclude, :only, , :rename keys guide modification of current namespace.

import adding mappings of class names current namespace, package qualifiers not need used.


Comments

Post a Comment

Popular posts from this blog

Regex find and replace between <div class="customclass"> and </div> tag -

i cant find anywhere working regex expression find , replace text between div tags so there html want select between <div class="info"> , </div> tag , replace other texts <div class="extrauserinfo"> <p>hello world! sample text</p> <javascript>.......blah blah blah etc etc </div> and replace with my custom text codes <tags> asdasd asdasdasdasdasd</tags> so <div class="extrauserinfo"> custom text codes <tags> asdasd asdasdasdasdasd</tags> </div> here refiddle code there , can see want replace whole bunch of codes between , tag http://refiddle.com/1h6j hope mean :) if there's no nesting, plain match non-greedy (lazy) (?s)<div class="extrauserinfo">.*?</div> .*? matches amount of character (as few possible) meet </div> used s modifier making dot match newlines too. edit : here javas...
Read more

jpa - Passing entitymanager from reflection method -

we using struts2, ejb jpa. @persistencecontext private entitymanager entitymanager; // here getting entitymanager reflection method m = c.getdeclaredmethod(methodname, params); //here params accept class<?> now want pass entitymanager using reflection. how pass entitymanager in getdeclaredmethod ? billy, reply. now fixed issue using transactionscopedentitymanager. we using struts2 + ejb + jpa 1.0 (cmt). have many action classes , form values persist in db. created ejb every 1 action. planing 1 ejb action classes. go reflection. using getdeclaredmethod, can pass method name , params. here params accept classes. need pass our form object , entitymanager. used entitymanager type, changed transactionscopedentitymanager.
Read more