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Very slow JSON parsing using EVReflection depending on iOS device I am obtaining a json object containing an array of objects. I am willing to parse this json using the lib EVReflection . EVReflection The operation takes a while, so I decided to monitorize the steps I'm taking, and realized the parsing of the json can take up to 20 seconds depending on the device. Using iPhone SE / iOS 11.4 it takes 4 seconds aprox. Using iPhone 5 / iOS 10.3 it takes 20 seconds aprox. I am wondering if such variation is normal just depending on devices/OS. Should I just use another lib or is there anything I can do to speed up the operation? This is the code I'm using: func getParkings(update: Bool) -> Observable<[ParkingEvo]> { if let x = parkings, !update { return Observable.just(x) } else { print("STEP 1: Calling API for parkings (NSDate())") return RxAlamofire.string(.get, PARKINGS_URL, parameters: getParameters()...

How to extract parameter from pdf file using java code & pdfbox I am doing a java program which is to extract parameter from pdf files. I would like to extract the pdf to get the parameter like parameter: so I wish to get the output shown in the picture below: So you want to extract the text from the PDF, and then count the occurences? – notyou Jul 2 at 9:41 @notyou Yes. Do you know how? – charlsalad Jul 2 at 9:53 @notyou I am able to do it using pdfid in Kali Linux but I have no idea how to do it using java for my program. – charlsalad Jul 2 at 9:54 ...

Does Boost Spirit X3 support left recursion? One of the shortcomings/implementation challenges of recursive-descent parsers is dealing with left recursion, e.g. <expr> := <expr> '+' <num> | <num> The parser needs to parse an expr before it can parse an expr... Now, Boost::Spirit::X3 generates recursive descent parsers. Does that mean it doesn't support left-recursion, or does it have workarounds for it? Note: Left recursion can (often? always?) be eliminated from the grammar beforehand (like in the solution to this question), but that's not what I'm asking. 1 Answer 1 Spirit doesn't rewrite your grammar at all, it runs exactly what you've wrote. So are you saying this kind of syntax would result in a compilation error? Runtime error? – einpoklum Jul 1 at 21:44 ...

Reading a tcp packet on Node js server I am trying to read a tcp packet on node js sent from c++ tcp client. Below is the struct sent by tcp client struct LoginPacket { uint16_t packetLength; // value:24 uint8_t cmd; // value: 96 uint8_t version; // value: 1 uint8_t checkSum; // value: 1 uint8_t type1; // value: 1 uint8_t type2; // value: 1 uint8_t random; // value: 8 uint8_t lengthOfText; // value: 7 char *textField; // value: "abcd" }; Below is my nodejs server application to read this struct. var tcpSock = require('net'); var server = tcpSock.createServer(function(socket) { socket.write('Echo serverrn'); socket.pipe(socket); //var buffer = new Buffer(4096, 'hex'); // listen for incoming data socket.on("data", function(data){ buf = new Buffer(256); len = buf.write(data.toString()); var Struct = require('struct').Struct; function getPacketHeader(buffer){ var packetHeader = new Struct() ...