iphone - Array of plist update data -

-

i have 2 arrays init 2 different plist files, plist files inside document folder not in bundle editable.

progress = [[nsmutablearray alloc] initwithcontentsoffile:[self progressfilepath]];     easy = [[nsmutablearray alloc] initwithcontentsoffile:[self easyfilepath]];

the progress plist empty insted easy is:

<array>     <dict>         <key>titleen</key>         <string>hunter</string>         <key>status</key>         <integer>0</integer>         <key>image</key>         <string></string>     </dict> </array>

now in view have tableview loaded easy , element press in row, if it’s status 0 goes progress plist, set object key image in dog.png in progress.plist set object 0 key status in easy one. did this:

nsnumber *status = [[easy objectatindex:indexpath.row] objectforkey:@"status"];     if ([status intvalue] == 0) {              [progress addobject:[easy objectatindex:indexpath.row]];          int progresstot = [progress count];         (int i=0; i<progresstot; i++) {             if ([[progress objectatindex:i] objectforkey:@"titleen"] == [[easy objectatindex:indexpath.row] objectforkey:@"titleen"]) {                 [[progress objectatindex:i] setobject:@"dog.png" forkey:@"image"];             }         }             [progress writetofile:[self progressfilepath] atomically:yes]; [[easy objectatindex:indexpath.row] setobject:[nsnumber numberwithint:1]        forkey:@"status"];              [easy writetofile:[self easyfilepath] atomically:yes];       }

everything work fine, can’t understand why @ end of method have progress.plist element dog.png have dog.png on easy one. (status updated on easy , works dog.png on both). can me? can’t understand what’s wrong.

[progress addobject:[easy objectatindex:indexpath.row]];

you add object p1 == [easy objectatindex:indexpath.row] progress array, progress array retained p1 , has 1 of elements. didn't create new object, retained existing 1 - p1.

for (int i=0; i<progresstot; i++) {     if ([[progress objectatindex:i] objectforkey:@"titleen"] ==              [[easy objectatindex:indexpath.row] objectforkey:@"titleen"])      {         [[progress objectatindex:i] setobject:@"dog.png" forkey:@"image"];     } }
  • in if-statement want compare objects' content, not pointers, guess.
  • once again, in both arrays have pointer (p1) same object, when [p1 setobject:forkey:]; - both arrays.

Comments

Post a Comment

Popular posts from this blog

c++ - Function signature as a function template parameter -

-
i'd use function signature template argument. works great classes, when try same trick function templates, msvc throws error: error c2768: 'func' : illegal use of explicit template arguments here's code: template <typename signature> void func(); template <typename r, typename a1> void func<r(a1)>(); what should make work? you cannot partially specialize function template, not supported language. can create partially specialized class template static member function, , possibly trampoline function instantiate class template , invoke static function. something this: namespace detail { template<typename signature> struct helper; template<typename r, typename a1> struct helper<r(a1)> { static void call() { // stuff r , a1... } }; } template<typename signature> void func() { detail::helper<signature>::call(); }
Read more

algorithm - What are some ways to combine a number of (potentially incompatible) sorted sub-sets of a total set into a (partial) ordering of the total set? -

-
i have sorting problem i'm pretty sure doesn't have canonical "answer" - has number of different approaches, each pros/cons. i'm interested in hearing different approaches. suppose bunch of people {p_i | i=1,...,m} ranking favorite ice cream flavors. in total there n different flavors, single person p_i ranks n_i << n flavors or familiar with. i'm interested in combining these sub-rankings plausible overall ranking of n flavors. for concrete situation: m , n both 1000 (by coincidence), , each n_i 20 . can assume there's enough overlap in flavors people rank such no flavor "isolated". again, i'm interested in hearing different ways approach this, if there isn't single clear answer. thanks! one way approach problem construct directed cyclic graph representing of constraints on ordering of elements. nodes in graph represent different elements compared , have edge first node second node if had ranked first e...
Read more

How to call a javascript function after the page loads with a chrome extension? -

-
there's function on page want call after loads. not own page, can't insert html it. can please provide specific examples how chrome extension or greasemonkey? (function submitaction() ). both chrome extensions , greasemonkey offer ways specify when script inject if executed. in chrome extension, you set in manifest : "content_scripts": [ { "run_at" : "document_idle", in greasemonkey compatible userscripts, set in metadata // @run-at document-end in both cases, have add script if want ensure resources loaded when function executed : document.addeventlistener('load', submitaction);
Read more