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im running issues compiling both example route_guide generated source own. im sure user error im not sure issue is. error seems hint grpc_final wasn't able find reference to. $ protoc --version libprotoc 3.0.0 ./route_guide.grpc.pb.h:29:2: error: expected expression public: ^ ./route_guide.grpc.pb.h:28:18: error: variable has incomplete type 'class routeguide' class routeguide grpc_final { ^ ./route_guide.grpc.pb.h:28:7: note: forward declaration of 'routeguide::routeguide' class routeguide grpc_final { ^ route_guide.grpc.pb.cc:25:18: error: incomplete type 'routeguide::routeguide' named in nested name specifier std::unique_ptr< routeguide::stub> routeguide::newstub(const std::shared_ptr< ::grpc::channelinterface>& channel, const ::grpc::stuboptions& options) { ^~~~~~~~~~~~ ./route_guide.grpc.pb.h:28:7: note: forward declaration of 'routeguide::routeguide' class routeguide grpc_fin...

can me center links on nav bar please. have been trying last 45 minutes. every time use display: flex , justify-content: center works until hamburger button appears , clicked on , floats left. any massively appreciated. thank you reece .navbar { background-color: #000; justify-content: center; height: auto; font-family: gill sans, verdana; font-size: 15px; line-height: 18px; text-transform: uppercase; letter-spacing: 2px; font-weight: bold; } nav li:hover { background-color: #c00; margin: 0; } <nav> <div class="navbar-container"> <!--navbar container start --> <nav class="navbar navbar-inverse navbar-fixed-top"> <div class="navbar-header"> <button aria-controls="navbar" aria-expanded="false" class="navbar-toggle" data-target="#navbar" data-toggle="collapse" type="button"> ...

i'm using following steps sign-up new firebase user. there way me set username parameter in future user can login using username & password ? also, there way sign using username & password ,ie, not have option of e-mail id. i've gone through following solution, doesn't seem efficient. suppose there better way of doing so. firebase login , signup username private firebaseauth auth; //get firebase auth instance auth = firebaseauth.getinstance(); //create user auth.createuserwithemailandpassword(email, password) .addoncompletelistener(signupactivity.this, new oncompletelistener<authresult>() { @override public void oncomplete(@nonnull task<authresult> task) { toast.maketext(signupactivity.this, "createuserwithemail:oncomplete:" + task.issuccessful(), toast.length_short).show(); // if sign in...

i'm developing pwa works fine such on desktop , android. on android, can installed on home screen , runs offline. i expect makes app installable on chromebook well, allowing app icon installed task bar, example, without need dedicated "chrome app" (since see non technical reason that). however, can't find way install app manually on chromebook (chrome os 54) - there not seem "install" command in menu. is not supported (why?) or require special settings in manifest or something? i think equivalent, now, of installing progressive web app on chrome book, select more tools "customize , control" button (three vertical dots lately) , select add shelf. check "open window" option.

consider binary sequence b of length n . initially, bits set 0. define flip operation 2 arguments, flip(l,r) , such that: all bits indices between l , r "flipped", meaning bit value 1 becomes bit value 0 , vice-versa. more exactly, in range [l,r]: b[i] = !b[i]. nothing happens bits outside specified range. you asked determine number of possible different sequences can obtained using exactly k flip operations modulo arbitrary given number, let's call mod . more specifically, each test contains on first line number t , number of queries given. there t queries, each 1 being of form n , k , mod meaning above. 1 ≤ n, k ≤ 300 000 t ≤ 250 2 ≤ mod ≤ 1 000 000 007 sum of n-s in test ≤ 600 000 time limit: 2 seconds memory limit: 65536 kbytes example : input : 1 2 1 1000 output : 3 explanation : there single query. initial sequence 00. can following operations : flip(1,1) ⇒ 10 flip(2,2) ⇒ 01 flip(1,2) ⇒ 11 there 3 possible sequences can ge...

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms; using system.data.sqlclient; namespace crudwithlogin { public partial class student_registration : form { sqlconnection conn = new sqlconnection(@"data source=(localdb)\mssqllocaldb;attachdbfilename=c:\users\android\documents\data.mdf;integrated security=true;connect timeout=30"); public student_registration() { initializecomponent(); } private void student_registration_load(object sender, eventargs e) { label1.text = "you logged in "+((form)this.mdiparent).controls["label1"].text; } private void button1_click(object sender, eventargs e) { conn.open(); sqlcommand cmd = conn.createcommand(); cmd.comman...

i creating webpage symfony. there advantages in implementing userinterface symfony\component\security\core\user ? it seems me, interface not represent needs. example not need , want username rather email. you need implement many components e.g. security use it. your user can extended or simplified. username do public function getusername() { return $this->getemail(); }

i can't figure out how send multiple arguments custom template filter. the problem use template variables arguments. custom template filter @register.filter def is_scheduled(product_id,dayhour): day,hour = dayhour.split(',') return product.objects.get(id=product_id).is_scheduled(day,hour) normal use {% if product.id|is_scheduled:"7,22" %}...{% endif %} the line above work correctly put 2 arguments - 7 , 22 filter (tested - works). problem want put variables instead of plain text/string argument. in template: {% day=forloop.counter|add:"-2" hour=forloop.parentloop.counter|add:"-2" %} now, want use {{ day }} , {{ hour }} arguments. i tried example: {% if product.id|is_scheduled:"{{ day }},{{ hour }}" %}...{% endif %} but raises: exception value: invalid literal int() base 10: '{{ day }}' do have ideas? you don't need {{}} when you're inside {% %} . use names dire...

i'm implementing svm classification problem using libsvm in python. have numpy array of consisting of 1.0 , -1.0 called train_labels , corresponding features in numpy array called train_data. since libsvm not accept numpy arrays, convert them lists using code below. train_labels = train_labels.tolist() train_data = train_data.tolist() however, when put them on svm_problem as: prob = svm_problem(train_labels,train_data) i'm getting error file "c:\anaconda\lib\site-packages\svm.py", line 109, in __init__ i, yi in enumerate(y): self.y[i] = yi typeerror: float required i've tried converting them float using train_labels = train_labels.astype(np.float) before converting list i'm still getting same error. using tolist() method converting numpy array lists before putting them on libsvm commands working when i've tried them in console. does know why i'm getting error? , how can solve it? guys! after more idling in code, i'...

we using ejabberd server our mobile chat application. , using ios xmpp-framework our ios application ( https://github.com/robbiehanson/xmppframework ) but have problem on implementation couldn't find solution. we've implemented every aspect of xmpp messaging , works besides 1 thing: while our application on background, our ejabberd server sends push notifications inform offline messages. (only sends notification offline messages) then we've decided implement ios background push notification functionality offline messages while application on background. but problem have become online(send presence) in order offline messages. when creates 2 unwanted consequences: the party sends message saw our presence online (even though in background) just because becoming online while application on background , our server cannot send push notification other people's messages becuase online , server can send notification offline messages. for solving problem, thin...

let's have vector takes struct point type, see snippet below. function adds 2 points it. since points here locally initialized. there issue/concern points not accessible when function returns? there copy action happening inside vector container, if so, these data struct stored? in heap? struct point { int x; int y; string name; }; vector<point> pointvec; int addpoints() { point p1 {2, 3, "point 1"}; point p2 {4, 4, "point 2"}; pointvec.push_back(p1); pointvec.push_back(p2); } vector starts no memory allocated. during first push_back , allocates enough room 1 element , copies passed point in. during next push_back , reallocates enough room both elements, , moves copy of previous element new memory copies second point. if push_back again, allocate enough room (typically) 4 elements, move copies, , copy new one. there standardized restrictions (amortized constancy) on complexity of these operations requi...

i absolutly new in php , laravel , have following problem. from view perform ajax post request via jquery, code: jquery.ajax({ url: '/dosearch', type: 'post', datatype: 'json', //data: $form.serialize(), success: function(data){ console.info('ssssssssssiiii',data); }, error: function(data, b){ console.info('erroreeeeee'); } }); this post request handled simple controller method: public function dosearch(){ echo 'searched'; } that have return view searched string. the problem obtaining error message: http://localhost:8000/dosearch 500 (internal server error) that create exception casauted tokenmismatchexception , in laravel stackrace can see this: in verifycsrftoken.php line 68 @ verifycsrftoken->handle(object(request), object(closure)) in pipeline.php line 137 @ pipeline->illuminate\pipeline\{closure}(object(request)) in pipeline.php line 33 @ pipeline->illuminate\rou...

i new javascript , working google maps api javascript. this asignment school , provided working script , php code display map, position, update position , on. our task implement convex hull algorithm. these things i'm having problems with: the data-structure of objects how display lines of hull on map once i've computed them here's code; function convexhull(){ console.log("convexhull()"); console.log(obj.length); //check if there more 1 user, otherwise convex hull calculation useless if(obj.length > 0){ //lists x-positions , y-positions var pos_x = []; var pos_y = []; //fill lists for(var = 0;i < obj.length; i++){ pos_y.push(parsefloat(obj[i][1])); pos_x.push(parsefloat(obj[i][2])); console.log("point " + + ": lat = " + pos_y[i] + ", lon = " + pos_x[i]); } //find lowest point index var low_index ...

i'm trying create program user can create new person stored in hashmap. further can lend dvd's across these persons want stored. problem arrives when i'm trying use method nyperson, when program refuses store new name in hashmap. here's code(lot's of code bear me): the class nyperson method: import java.util.*; class dvdadministrasjon { private hashmap<string, person> navneliste = new hashmap<string, person>(); public void nyperson(string navnperson) { if(navneliste.containskey(navnperson)) { system.out.println(navnperson + " er allerde listen"); } else { person nyperson = new person(navnperson); navneliste.put(navnperson, nyperson); } } public void kjop(string navnperson, string navndvd) { if (navneliste.containskey(navnperson)) { navneliste.get(navnperson).kjop(navndvd); } else { system.out.println("det er ingen personer som heter " + navnperson); } } p...

i'm know how create method, or if there method generate new token email. want create option in site "send new verification email", user needs put email. i'm using mandril, i'm using custom way send emails , verify users: function generateverificationtoken(context, user, callback) { const { req } = context; req.app.models.user.generateverificationtoken(user, (error, token) => { if (error) { return callback(error, null); } callback(null, token); }); } user.afterremote('create', (context, user, next) => { generateverificationtoken(context, user, (error, token) => { if (error) { return next(error); } user.verificationtoken = token; user.save((error) => { if (error) { return next(error); } loopback.email.send({ to: user.email, template: { name: 'signup-confirm', }, global...

i trying create login page using ajax validate data. working fine if use document ready when used document.addeventlistener("deviceready", ondeviceready, false); not firing ajax. here code have @ moment. <script type="text/javascript"> document.addeventlistener("deviceready", ondeviceready, false); function ondeviceready() { //$('document').ready(function() //{ $("#login").on("submit", function(e) { alert('test'); ajax code goes here }); }; </script> this code inside foot section. have included cordava.js in head section. please advise doing wrong. wrap code in - $( document ).ready(function() { //here code document.addeventlistener("deviceready", ondeviceready, false); function ondeviceready() { $("#login").on("submit", function(e) { alert('test'); }); }; }); sometimes docume...

i try deploy simple web chat server (nginx/puma). receive error console of browser: websocket connection 'ws://domain.com/cable' failed: error during websocket handshake: unexpected response code: 404 my config server domain.conf: upstream backend { server unix:///var/run/backend.sock; } server { listen 80 ; server_name domain.com; root /home/rails/backend/public; access_log /home/rails/backend/log/nginx.access.log; error_log /home/rails/backend/log/nginx.error.log info; try_files $uri/index.html $uri @backend; location @backend { proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for; proxy_set_header host $http_host; proxy_redirect off; proxy_pass http://backend; } location ^~ /assets/ { gzip_static on; expires max; add_header cache-control public; } location /cable { proxy_pass http://gifty; proxy_http_version 1.1; proxy_set_header upgrade $http_upgrade; proxy_set_header ...

in laravel 5.3 authentication, i'm using middleware verify if user logged in access page... the problem i'm facing que middleware redirect login page, when did log in... my routes: route::get('/', 'produtocontroller@lista'); route::get('/produtos', 'produtocontroller@lista'); route::get('/produtos/mostra/{id}', 'produtocontroller@mostra'); route::get('/produtos/novo', 'produtocontroller@novo'); route::post('/produtos/adiciona', 'produtocontroller@adiciona'); route::get('produtos/lista-json', 'produtocontroller@listajson'); route::get('/produtos/remove/{id}', 'produtocontroller@remove'); auth::routes(); route::get('/home', 'homecontroller@index'); route::get('/login', 'logincontroller@form'); route::post('/login', 'logincontroller@login'); my logincontroller class logincontroller extends controller { ...

]i need write mini program in c# using windows forms - new c# , programming, bare on me. lets have 10 doctors (laege) , want display each doctors information such cvr number, address, email , on - many different valules (bool, int, strings) have created class called praksisoplysninger (information of doctors) added 1 doctor (laege1) in button handler. how can display data, when user enters ydernr - rest of information need displayed - have made several textboxes this. getting error called many recursion - need stop loop inside class of doctors - have tried several hours - please thanx in advance :) blockquote **this class of doctors - have laege1-10 in class ** laege equal doctor in denmark ;) recursion error.. how can stop loop? there no error in code in button handler. `laegeinfo laege1 = new laegeinfo() { ydernr = 012345, navn = "johannes andersen", cvr = 4100, adresse = "frederiksvej 15, faxe", telefon = ...

i i've started dynamic web project on eclipse , java ee , try program restful service. operating system windows 7 , server payara. problem is, "get" , "options" allowed http-methods. tried change web.xml accepts post-requests web.xml nevertheless still not possible make post-request server. "405 method not allowed"-error.and in response header there still standing "allowed: get, options". there else, must done allow server accept post-requests write web.xml-file? you 405 error because there no method in rest resource accepts post request type. defined method annotated @get , no method annotated @post . try adding @post annotation on method in rest resource class.

this code: #include <stdio.h> int main() { int number; int prime[200000] = { 0 }; int = 0; int j = 0; int number1[200] = { 0 }; int t = 0; int count = 0; int newprime2[200][200]; int counter[200] = { 0 }; int square; int count1; while ((scanf("%d", &number) == 1 ) && (number != 0)) { number1[count] = number; ++count; } count1 = count; (count = 0; count < count1; ++count) { if (number1[count] < 0) { fprintf(stderr, "error: invalid input!\n"); return 100; break; } (i = 0; < number1[count]; i++) { prime[i] = i; } (i = 2; (i < (number1[count])); i++) { if (prime[i] != 0) { (j = 2; (j < (number1[count])); j++) { { prime[j*prime[i]] = 0; if (prime[i] * j > (number1...

i had found website: https://docs.oracle.com/javafx/2/swing/swing-fx-interoperability.htm . on site, there example create simpleswingbrowser. problem can't use code in processing , don't know how can edit work. is there way use javafx simpleswingbrowser in processing (if needed in swing frame or that)? thanks in advance, daantje i can't find way import javafx code processing, seems weird because processing supports using javafx renderer. might possible import javafx code, quick google doesn't reveal how. but hope not lost. can use processing java library, , run sketch way instead of via processing editor. here tutorial should started that. then when have sketch running via java, can create javafx frame would.

i'm building asp.net web api application , have following code... public ihttpactionresult getcustomers() { var customers = context.customers.tolist(); return ok(customers); } i'm using ok() method return customers because i'm using ihttpactionresult return type. now if have following method public void deletecustomer(int id) { var customerindb = context.customers.singleordefault(c => c.id == id); if (customerindb == null) { notfound(); } context.customers.remove(customerindb); context.savechanges(); } can use notfound() method here when return type of actionmethod void??? void not have return type. can try call notfound() , i'm not sure if compile - haven't tried. why don't go out of box ihttpactionresult ? public ihttpactionresult deletecustomer(int id) { var customerindb = context.customers.singleordefault(c => c.id == id); if (customerindb == null) { return notfound(); ...

i access token idsrv4 , when try call api token var client = new httpclient(); client.setbearertoken(token.accesstoken); var response = await client.getasync("http://localhost:60602/api/users"); i error message: microsoft.owin.security.oauth.oauthbearerauthenticationmiddleware error: 0 : authentication failed system.invalidoperationexception: sequence contains no elements @ system.linq.enumerable.first[tsource](ienumerable 1 source) @ identityserver3.accesstokenvalidation.discoverydocumentissuersecuritytokenprovider.<retrievemetadata>b__1(jsonwebkey key) in c:\local\identity\server3\accesstokenvalidation\source\accesstokenvalidation\plumbing\discoverydocumentissuersecuritytokenprovider.cs:line 152 @ system.linq.enumerable.whereselectlistiterator 2.movenext() @ system.identitymodel.tokens.jwtsecuritytokenhandler.resolveissuersigningkey(string token, securitytoken securitytoken, securitykeyidentifier keyidentifier, tokenvalidat...

one of import statements from qgis.core import * is gray in pycharm, it's still being called upon. if remove import statement script no longer works. ignoring issue i'm trying compile script via pyinstaller , it's giving me errors, lead me believe has strange import. has else encountered this? else have advice compiling script uses qgis.core? has not been easy.

the regular expression using: %s??[a-z](:\d+|)(^\[)? the string is: "%sprix %s[4] online %s[3]:6 pshopping %s:9 in %s" i trying find %s string except %s[4] , %s[3] . my output using above regular expression not giving expected results. expected output is: %s, %s:9, %s my output is: %s, %s[ , %s[, %s:9, %s you may use %s(?!\[)(?::\d+)? see regex demo . details : %s - percentage sign , s (?!\[) - not followed [ (?::\d+)? - optional sequence of : , 1 or more digits the above regex fail match in cases when %s followed [ , e.g. in %s[text . if want fail match when %s followed [ +number+ ] , use %s(?!\[\d+\])(?::\d+)? .

i trying make packet sniffer, encountering problems. using linux (debian) , pcap library. so, have set pcap filter "host www.google.com". when run program, waits, , if ping www.google.com, quits (just if pressed ctrl+c), , don't know why. if replace callback function's body with: void got_packet(....) { static int 1 = 1; printf("%i ", i); i++; } then program works fine (it counts number of packets). if replace below code, said earlier. appreciated, thanks. (summary below code: handle_ethernet() supposed print ethernet header. got_packet() calls handle_ethernet() ) #include<stdio.h> #include<stdlib.h> #include<pcap.h> #include<sys/socket.h> #include<errno.h> #include<netinet/in.h> #include<arpa/inet.h> #include<netinet/if_ether.h> int handle_ethernet(u_char* args, const struct pcap_pkthdr* pkthdr, const u_char* packet) { struct ether_header* eptr; eptr = (struct eth...

i trying write procedure put each connected component of given circuit distinct sub-module. so, tried add function scc pass in yosys add each scc submod. function is: void putselectionintoparition (rtlil::design *design, std::vector<pair<std::string,rtlil::selection>>& selectionvector) { int p_count = 0; (std::vector<pair<std::string,rtlil::selection>>::iterator = selectionvector.begin(); != selectionvector.end(); ++it) { design->selection_stack[0] = it->second; design->selection_stack[0].optimize(design); std::string command = "submod -name "; command.append(it->first); pass::call_on_selection(design, it->second, command); ++p_count; } } however, code not work properly. guess problem "selection" process use. wondering if there utility/api inside yosys source accept vector of cells (as , name submodule) , put them sub-module. the f...

so have read lot property keyword , believe have gotten gist of it. came across example class peopleheight: def __init__(self, height = 150): self.height = height def convert_to_inches(self): return (self.height * 0.3937) def get_height(self): print("inside getter method") return self._height def set_height(self, value): if value < 0: raise valueerror("height cannot negative") print("inside setter method") self._height = value height = property(get_height, set_height) #---->confusing and last statement confusing me height = property(get_height, set_height) i understand property statement has signature property(fget=none, fset=none, fdel=none, doc=none) what dont get_height , set_height . understand height class variable (not instance variable) get_height , set_height .i thinking above should have been height = property(get_height, set_hei...

x-axis increases + 100 there way shorten code using loop using python 3 def peasinapod(): win=graphwin(100,500) peas=eval(input("how many peas? ")) if peas == 5: p=circle(point(50,100),50) p2=circle(point(150,100),50) p3=circle(point(250, 100),50) p4=circle(point(350,100),50) p5=circle(point(450,100),50) p.draw(win) p2.draw(win) p3.draw(win) p4.draw(win) p5.draw(win) edit you asked shortest, right? def peasinapod(): win = graphwin(100,500) list(map(lambda p: p.draw(win), [circle(point((i*100)+50,100),50) in range(int(input('how many peas? ')))])) you need list execute lambda . original answer: something this? def peasinapod(): win = graphwin(100,500) peas = eval(input('how many peas? ')) # use safer eval in range(peas): p = circle(point((i*100)+50,100),50) p.draw(win) i'm assuming don't nee...

$(function() { var $win = $(window), h = 0, opacity = 0, getwidth = function() { h = $win.height(); }; $win.mousemove(function(e) { getwidth(); opacity = (e.pagey / h); console.log(opacity); $('#myelement').css('opacity', opacity); }); }); #myelement { height: 100px; width: 100px; background-color: blue; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="myelement"></div> http://jsfiddle.net/wv8jx/791/ when mouse goes down, element shows. want same thing except want element disappear scroll down, instead of showing up. ideas how that? since opacity attribute can have value between 0 , 1, can reverse behavior simple changing following line: o...

so project have implement rdt in java using simulator has been coded me, have sender , receiver classes (entities). this diagram of happening. whenever try udt_send(packet) or rdt_send(packet) error 'cannot find symbol' rtd , utd. presumed pre-set thing in java evidently not, ideas of i'm supposed or how rtd or utd meant work? guys. p.s. unidirectional transfer of data required.

i totally new programming in c++ , learning constructors. in blog post constructors read before written using "initializer list" better assigning values inside body in class constructor when initialzing class variables due performance reasons. there not explanation reasons behind it. if can explain grateful. firstly question in not complete. there specific cases indeed. simplicity : class foo { exampletype var; public: foo(exampletype x):var(x) { } }; firstly copy constructor of “exampletype” class called initialize : var(x) destructor of “exampletype” called “x” since goes out. in variable assignment case, firstly constructor called example type assignment operator called , destructor called.

could please me how accomplish correct digestvalue in xml document? have xml examples creator, somehow cannot generate same sha256 hash in php. the documentation says <soap:body> should hashed using sha256 algorithm. well, understand need to canonicalize xml (c14n) create sha256 hash it base64 encode it the hash result example should twpslqpoxsue8k6q8lad7dymhwkticbhnifrpnwdg/m= how accomplish in php code below? i tried this: $xml='<soap:body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:id="id-ab79979f3364f5119a14761286403964"><trzba xmlns="http://fs.mfcr.cz/eet/schema/v3"><hlavicka dat_odesl="2016-09-19t19:06:37+02:00" prvni_zaslani="false" uuid_zpravy="ab1bc7a0-5ab0-4d61-a170-2982f2d83784"/><data celk_trzba="34113.00" cerp_zuct="679.00" cest_sluz="5460.00" dan1="-172.39" dan2="-...