map

问题 I have a similar question posted, it was getting messy and this will be much easier to follow. The part that is in the Runner() that is / commented out /. You un-comment this, run the program once, check you console print out. Then / comment it out / again, and run the program a second time, you will notice that the subCodebook = {} is returning a blank/null; This is my question, why is this returning null. import java.io.FileInputStream; import java.io.FileOutputStream; import java.io

问题 I have an HTML Table that looks like this: The user can update any of the textboxes and select from the dropdowns. Once he has completed his actions, The data needs to be sent via ajax to the server. It is acceptable to send all values (Not only those that changed). Need help building the JSON string for an ajax transaction. (Note that the description column can be either a string, textbox or a dropdown in addition the dropdowns do not contain the same options.) The structure I am trying to

问题 I am setting the Map to Satellite view on click of a toggle button mapToggle.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (mapToggle.isChecked()) { mapV.setSatellite(true); } else { mapV.setSatellite(false); } }}); I want to programitically determine which mode it is in when the app restarts. Please advice. 回答1: The way I accomplished this is to set an int value in your SharedPreferences. Then onClick of that button, get the value and switch satellite on or off

问题 I'm trying to reference the jar file of google-play-service-lib but each time i reference it from the properties window, it gives me a red cross beside the lib. I tried uninstalling the google play service from the SDK service and re-installing it again.. also it didn't work up. okay now i've changed the path of importing to the same drive where i keep my projects and thx god it worked... but now the maps open with a white blank page. and what was written in the logcat : Unable to load google

问题 I've been shown how to create a jagged multidimensional std::map by using boost::any. However, I'm having trouble setting the values like in this answer. When I use accounts["bank"]["cash"] = 100; gcc gives this error error: no match for ‘operator[]’ in ‘accounts.std::map<_Key, _Tp, _Compare, _Alloc>::operator[]<std::basic_string<char>, boost::any, std::less<std::basic_string<char> >, std::allocator<std::pair<const std::basic_string<char>, boost::any> > >((* & std::basic_string<char>(((const

问题 I'm trying to understand lists in prolog when I stumbpled over this problem: there's a predicate mergeandmap/2 that should basically do this: mergeandmap([[a1,...,an],...,[z1,...,zm]],[x1...xn]) %----------list 1------------ -list 2-- List 2 consits of letters (for example [a,b,c]). List 1 consits of several lists with size(list2) elements containing 1s and 0s (for example: [[0,0,1],[1,0,1],[0,1,1]]) The prolog program should determine from list 1 which elements from list 2 should be printed

问题 I'm attempting to get the values for the "filterInputParameters" array within the serviceResponseValue map. Right now I have attempted to iterate through the map but could only obtain the first level of data such as the displayName and I need to go one-two levels deeper for the values in filterInputParamters array. Please let me know if you need more information. Dart Code: var jsonString = response; var dropDown = querySelector("#asset"); Map jsonObject = JSON.decode(jsonString) as Map;

问题 I'm attempting to get the values for the "filterInputParameters" array within the serviceResponseValue map. Right now I have attempted to iterate through the map but could only obtain the first level of data such as the displayName and I need to go one-two levels deeper for the values in filterInputParamters array. Please let me know if you need more information. Dart Code: var jsonString = response; var dropDown = querySelector("#asset"); Map jsonObject = JSON.decode(jsonString) as Map;

问题 I utilise the following code to put a route overlay onto an OSM droid map, using code gotten from the following tutorial (http://code.google.com/p/osmbonuspack/wiki/Tutorial_1) but slightly tweaked into a custom method, rather than being used in the OnCrerate method. Now this does route and produces a green overlay on the map. However, there is a problem exhibited from the For Loop onwards. This is because road.mNodes is always size zero indicating that no instructions are coming down.

问题 I'm a new C++ programmer, I learned Java and ANSI C a time ago and decided to give it a shot. Well, I love C++, but I didn't like how the iterators work: In java, you could make a whole container private and implement a getter function to it's iterator, and the iterator has a method hasNext() that returns a boolean depending on if it has reached the end of the container. The only way I found to do something similar on C++ is writing 2 getters, iteratorBegin() and iteratorEnd() , that returned