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To handle the operation on 2D polygons, I recently needed a set of libraries or libraries. I need to be able to perform boolean / clipping operations (difference and association) and triangular. So far I have found that there are libraries, and polytry looks good for triangular but I'm still leaving the boolean operation, and I'm not sure about its maturation. CAGL and GPC are free only if my own project is free. My special project is not commercial, so I am not hesitant to pay or request any license but I will be able to make a future commercial project I would like to use my code for this, so I'm hesitant about CGAL's open source license and the freeware-only restriction of the GPC. Oh, and C / C ++ have been liked.

Greetings, Using the Facebook API, I received an out access token for a user Have done I can use it to get information about the user and post on his wall etc. I'm trying to explain that (or if there is any way) get a list of pages of a user in a programmatic manner (so that they can be presented in a drop-down list on a third-party site) No such method has been found in the Facebook API, but I hope I remember something. Thank you! Since this question was asked, Facebook has added a new connection to the "user" graph API object : accounts . The current user-owned Facebook page, if manage_pages are allowed, this connection also uses access_tokens, which can be used for the graph API query from the page. .

I have a list of arrays and I would like to get the cartesian product of elements in the array. I would use an example to make it more solid ... itertools.product wants to do the trick, but I'm stuck in a little detail. arrays = [((-1, + 1), (-2, + 2), (-3, + 3)]; If I do cp = list (itertools.product (arrays)); get me cp = Cp0 = [((-1, 1)), ((-2, 2)), ((-3, 3),)] But what do I have to do? / P> cp1 = [(-1, -2, -3), (-1, -2, +3), (-1, + 2, -3), (-1, + 2, + 3), ..., (+ 1, + 2, -3), (+ 1, 2, 3)]. I have tried a few different things: cp = list (itertools.product (itertools.islice (arrays, lanes (arrays))) ); Cp = list (itertools.product (arrays, lanes (arrays))); All of them gave me cp0 instead of cp1 . Any thoughts? Thanks in advance. & gt; & Gt; & Gt; List (Iterols.product (* array)) [(-1, -2, -3), (-1, -2, 3), (-1, 2, -3), (-1, 2, 3) , (1, -2, -3), (1, -2, 3), (1, 2, -3), (1, 2, 3)] Feed all the arguments in the pro...

दो मॉडल (रेल 2.3.8): उपयोगकर्ता; उपयोगकर्ता नाम & amp; अक्षम गुण; उपयोगकर्ता के पास है: प्रोफ़ाइल प्रोफ़ाइल; पूर्ण_नाव & amp; छिपी हुई संपत्तियों मैं नामित_स्स्कोप बनाने की कोशिश कर रहा हूं जो अक्षम = 1 और छिपा हुआ = 1 उपयोगकर्ता-प्रोफाइल को समाप्त कर रहा है। प्रयोक्ता मॉडल आमतौर पर प्रोफाइल मॉडल के संयोजन के रूप में उपयोग किया जाता है, इसलिए मैं प्रोफ़ाइल मॉडल ((इसमें शामिल =>: प्रोफ़ाइल) को उत्सुक-लोड करने का प्रयास करता हूं। मैंने एक उपयोगकर्ता नाम पर नामित_स्स्कोप को 'दृश्यमान' बनाया ': नामित_स्स्कोप: दृश्यमान, {: joins = & gt; "INNER यूज़र्स.आईडी = प्रोफाइल.युसर_आईडी पर शामिल हों",: conditions = & gt; ["Users.disabled =? And profiles.hidden =?", False, false]} मैंने देखा है कि जब मैं एक क्वेरी में name_scope का उपयोग करता हूं, उत्सुक लोडिंग निर्देश विविधता 1 - उपयोगकर्ता मॉडल केवल: # UserController @users = User.find (: सभी) # उपयोगकर्ता के लिए इंडेक्स दृश्य & lt;% @ उपयोगकर्ता% & gt; & Lt; p ...

When I am grabbing data from my table for which permission is required, then all permissions should be made there ? Such as checking an administrator or seeing those data (MySQL)? Or should I catch it if they have a record, then check the specific actions on the PHP side (like see, add, edit, delete)? This is usually more efficient to do everything in SQL, but it is even more complex, And it can be very difficult to maintain. Mostly it depends on your exact safety model and safety concerns.

I have defined a class that does a long job and I call it to many other classes. Now I want to show an activity indicator, while this work is talking about it, and then it is removed. Since this is just a boring background task, this class has no visual, and I think that where I go into my problem. I can not get to show this thing That is what I did in my class: UIActivityIndicatorView * Activity indicator = [[UIActivityIndicatorView alloc] initWithFrame: CGRectMake 0.0F, 0.0F, 32.0F, 32.0 F)]; [Activity indicator set center: CGPointMake (160.0f, 208.0F)]; Activity indicator. Activation indicator = UIActivityIndicatorViewStyleWhite; UIView * contentView = [[UIView alloc] initWithFrame: [[UIScreen main screen] ApplicationFrame]]; [ContentView addSubview: Activity indicator]; [ActivityInteractive start-up]; // Class is long work that takes several seconds ..... [contentView release]; [Activity indicator release]; I think that when I get the content view, then I do something w...

I have a scenario where I need user checkout via PayPal and once we receive payment So we subscribe, the record PayPal in our membership site requires a "return" field when you submit the form button that will take the user back to our page, when the order will be successfully processed. On that page, we actually track sales and set a part of JavaScript to track sales. So my question is, how can I make sure that the Return page comes from PayPal and this is not a fraud. In the system, I know by user that in order to post PayPal back to our system There is a way to use notify_url, but in this case I have a simple way of doing this to run a part of JavaScript, or I need to write some looping / timetable functions which will be seen Checks to see if the post has been informed? I have to post to PayPal To prevent spoofing, call PayPal on a script on your site Will happen. Any changes made through the client / browser are open to modify the user, so only PayPal is dir...