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问题 I have an application running in C#.Netcore and C++ windows application. I achieved interoperability between C# & C++ using SWIG. But I am not able to achieve Callback functionality from C++ to C#. Also I tried by passing function pointer from C# to C++. But it also failed My Intention is to achieve callback by By passing a C# function pointer to C++ and call that function pointer when needed so that C# function will be executed. Creating a base class with virtual function in C++ and derive a

问题 How can i make a set of dictionaries from one list of dictionaries? Example: import copy v1 = {'k01': 'v01', 'k02': {'k03': 'v03', 'k04': {'k05': 'v05'}}} v2 = {'k11': 'v11', 'k12': {'k13': 'v13', 'k14': {'k15': 'v15'}}} data = [] N = 5 for i in range(N): data.append(copy.deepcopy(v1)) data.append(copy.deepcopy(v2)) print data How would you create a set of dictionaries from the list data ? NS: One dictionary is equal to another when they are structurally the same. That means, they got exactly

问题 I had clone git library of OCR using this link . git clone git://github.com/thiagoalessio/tesseract-ocr-for-php.git then simply i include the required file by following this example here is the example code which i m trying to run require_once './src/TesseractOCR.php'; $tesseract = new TesseractOCR('text.png'); $text = $tesseract->recognize(); echo "The recognized text is:", $text; But always it fires a fatal Error Fatal error: Uncaught Error: Call to undefined method TesseractOCR::recognize(

问题 I'm building an app where I need to get the user's location. To do this I have a click event attached to a button, which then calls navigator.geolocation.getCurrentPosition(getVenues, handleError); This works as expected on Chrome and Firefox, and the getVenues function is run after I grant access to my location. On Safari, after granting access the handleError function is immediately called. This happens on both my local and production server, both of which use HTTPS. My computer is on a

问题 I am trying to use disabled variant in tailiwnd, but it does not seem to work. I do not know what to do. I want to change button apperance if it is disabled, I have read the documentation and it says 'disabled' variant in not enabled by default. So I modify my tailwind.config.js and now it looks like this: module.exports = { purge: [], theme: { extend: {}, }, variants: { extend: { opacity: ['disabled'] } }, plugins: [], } I have this code in my page, both buttons look the same: <div class=

问题 Im working on developing a webapplication with MySQL Server 5.1, Spring 3.0.5 and Hibernate 3.6. I use Springs Transaction Management. Im a newbie, so please be patient with me if I ask a question which is easy to answer. :-) 1) I read about global (xa) and local transactions. Is it correct, that global transactions mean transactions, which execute dataoperations on different resources (like different databases). And that local transactions execute dataoperations on only one resource

问题 I have the following geojson file: { "type": "FeatureCollection", "features": [{ "type": "Feature", "properties": { "LINE": "RED", "STATION": "Harvard" }, "geometry": { "type": "Point", "coordinates": [-71.118906072378209, 42.37402923068516] } }, { "type": "Feature", "properties": { "LINE": "RED", "STATION": "Ashmont" }, "geometry": { "type": "Point", "coordinates": [-71.063430144389983, 42.283883546225319] } } ] } I would like to append the second object within the "features" array to the

问题 I had clone git library of OCR using this link . git clone git://github.com/thiagoalessio/tesseract-ocr-for-php.git then simply i include the required file by following this example here is the example code which i m trying to run require_once './src/TesseractOCR.php'; $tesseract = new TesseractOCR('text.png'); $text = $tesseract->recognize(); echo "The recognized text is:", $text; But always it fires a fatal Error Fatal error: Uncaught Error: Call to undefined method TesseractOCR::recognize(

问题 I've a field and applying datepicker on it using jQuery. it is currently getting time from system/browser. I want it to get time from specific time zone e.g America/new_york. The endDate param is the key to set the calendar, means user should not be able to select the date from future. Currently it is looking like this The code snippet is : jQuery('#convo_start_date').datepicker({ format: 'dd M yyyy', endDate: '+0d', autoclose: true, showButtonPanel: true, todayBtn: 'linked' }).on('change',

问题 I have the following geojson file: { "type": "FeatureCollection", "features": [{ "type": "Feature", "properties": { "LINE": "RED", "STATION": "Harvard" }, "geometry": { "type": "Point", "coordinates": [-71.118906072378209, 42.37402923068516] } }, { "type": "Feature", "properties": { "LINE": "RED", "STATION": "Ashmont" }, "geometry": { "type": "Point", "coordinates": [-71.063430144389983, 42.283883546225319] } } ] } I would like to append the second object within the "features" array to the