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问题 I'm trying to make an app with Rails 4. I'm using Cocoon gem for nested forms with simple form. I have a qualifications model, nested in a profile model. The associations are: Qualifications belongs_to :profile Profile has_many :qualifications accepts_nested_attributes_for :qualifications, reject_if: :all_blank, allow_destroy: true In my profile form, I incorporate the qualifications attributes with: <%= f.simple_fields_for :qualifications do |f| %> <%= render 'qualifications/qualification

问题 I am trying to move a Sprite along a straight line path. I want to move it 5 pixels on the slope, or the hypotenuse each time I go through the method until I reach the end point. I have the slope and y-intercept of the line, I also have the current X and Y values of the sprite through getX() and getY(). The final X and Y points to stop at are variables finalX and finalY. I have tried so many equations but I can't seem to get any of them to work. What am I missing!!? My latest equation was

问题 I'm trying to get the filename without the extension of the current document file in Omnigraffle Professional 5. tell application "OmniGraffle Professional 5" set _document to front document set _path to path of _document -- Get filename without extension tell application "Finder" set {_filename, _extension, _ishidden} to the {displayed_name, name_extension, extension_hidden} of the _path end tell end tell This gives me the following error: error "Can’t get displayed_name of \"/Users/ca

问题 I have an activity that is a service which plays audio using a media player. This is the service class MusicService extends Service implements OnCompletionListener { MediaPlayer mediaPlayer; @Override public IBinder onBind(Intent intent) { return null; } @Override public void onCreate() { mediaPlayer = MediaPlayer.create(this, R.raw.s);// raw/s.mp3 mediaPlayer.setOnCompletionListener(this); } @Override public int onStartCommand(Intent intent, int flags, int startId) { if (!mediaPlayer

问题 I call bindElement of the view to execute the webservice and get data. The call is executed correctelly if the key of tha path is different. The event "dataReceived" didn't trigger in the second time of the same path. Example: First Time: I call bindElement with the path 'ABCD', it's working, dataReceived is trigerred. The second time: If I call the same path 'ABCD', noting is happend, the event dataReceived didn't trigger. If I call another path 'EFGH', it's working and dataReceived is

问题 I have a pdf file placed in my assets folder and I am firing an intent to read it. Here is my code : Uri path = Uri.parse("file:///android:asset/about.pdf"); Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(path, "application/pdf"); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); When I do this, apop up appears with list of applications including adobe reader but when I click on it, a dialog appears saying :"Error", the file path is not valid

问题 I just set up a new faster computer to be my development station. I'm having a problem with a DLL not begin found when I run an application I'm working on using Delphi 6 Pro, but I don't think the problem is with Delphi. Keep in mind, I have the exact same setup as far as directories and tools on my old computer and on that computer the DLL is found at runtime without fail. The symptom appears to be that only some of the directories in my PATH environment variable are being searched, and the

问题 My index.php file exist in public_html/myapp/files directory,And i am trying to use library which exist in same directory public_html/myapp/files . But I am getting error Class 'SightengineClient' not found in /home/public_html/myapp/files/index.php on line 7 Where i am wrong ? Here is my code namespace Tests; use SightengineClient; $client = new SightengineClient('myapikey', 'secretkey'); $output = $client->check(['nudity'])->set_url('https://d3m9459r9kwism.cloudfront.net/img/examples

问题 I'm having issues when running the "python3" command along with "pip3" to install several python modules. It seems like my pip3 is linked to python 3.6 (which is what I want to use), but python3 is linked to 3.5. See below : pip3 --version pip 9.0.1 from /usr/local/lib/python3.6/site-packages (python 3.6) python3 --version Python 3.5.2 I'd like to run python3.6, and I am thinking that my PATH variable may be incorrect (or something to that extent). Thanks 回答1: configure your .bash_profile

问题 I am trying to work on a Python library that is already installed on my (Ubuntu) system. I checked out that library, edited some files, and wrote a small script to test my changes. Even though I put my script in the same folder as that of the library, it seems Python is using the installed version instead (the one in /usr/share/pyshared/... ). This is my directory structure: src + my_package - my_script.py + library_package - lots_of_code How can I tell Python to use the code in my directory,