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could explain why there 2 navigationitems ? when log below: nslog(@"%@", self.navigationitem); nslog(@"%@", self.navigationcontroller.navigationitem); i 2 different instances of uinavigationitem : <uinavigationitem: 0x7f85b06f5a20> <uinavigationitem: 0x7f85b06ab640> i have created uinavigationcontroller programmatically once. all uiviewcontroller s have property navigationitem . therefore, because uinavigationcontroller subclass of uiviewcontroller , has property. self.navigationitem 1 presented when controller pushed. documentation navigationitem , it's clear property this unique instance of uinavigationitem created represent view controller when pushed onto navigation controller. self.navigationcontroller.navigationitem would item displayed if apple allowed uinavigationcontroller s nested. however, since isn't allowed, it's best forget it.

i trying pause jms queue message driven bean on weblogic server using jmx. idea if message fails execute set number of times pauses queues consumption. when attempt connect via jmx failing, though running within weblogic container. following code using, fails on call jmsruntimehelper.getjmsdestinationruntimembean( ctx, queue ); the code below works fine if run within session facade bean called via business delegate (i.e. t3/rmi connection). category access = opentwinsclientproperties.getinstance().getcategory( opentwinsclientproperties.category_access ); string destinationaddresses = access.getvalue( opentwinsclientproperties.access_provider_url ); final string protocol = stringutils.substringbefore( destinationaddresses, "://" ); destinationaddresses = stringutils.removestart( destinationaddresses, protocol ); final string[] destinations = stringutils.split( destinationaddresses, ',' ); string[] hostandport = null; ( string destination : destinations ) {

new mongodb. i'm following this tutorial , , above error when trying follow step 2. i'm putting command windows command prompt, , i've set directory location of 'mongoimport' file (c:\mongodb). i've included same directory in path, , primer-dataset.json file saved in location. i'm confident mongodb installed properly. i had same problem. need navigate in command prompt mongoimport.exe file lives. try running command in tutorial. should put example .json file in same directory

for couple day fighting set apache installed homebrew on osx 10.10 . reason working not local domains trying setup via hosts file. no matter doing http://localhost available trough browser. , i've changed 1 thing. originally in /etc/hosts putting line set local domain: 127.0.0.1 imac.dev and did not work, changed to: ::1 imac.dev which how localhost set in hosts files , works! can explain me why? the first 1 ipv4 address , other signifies , ipv6 local address. loopback address ipv4 127.0.0.1 imac.dev loopback local address ipv6 ::1 imac.dev in current oses ipv6 if enabled, takes precedence on ipv4 might reason having issue. i, had use ipv6 ip address in dns record spf because gmail looking too. whether or not, it's being favored , replace ipv4 eventually. https://en.wikipedia.org/wiki/localhost

i think appication doesn't have architecture. can't figure out how navigate between files correctly. here non-standardized schema of application. each file contains 1 class. the principal problem can't variables class because of architecture of code. if put classes in 1 file, runs want separate classes (which qwindow and qwidget ) in several files. 1. in every parent class, import each child : from childfilename import childclassname for example, in optionwindow class, have : from mainwindowfilename import mainwindowclassname toolbarfilename import toolbarsclassname menubarfilename import menubarclassname note 1 : better lisibility, name files same name classes. *for example : mytoolbar.py contains class mytoolbar(qtgui.qtoolbar)* note 2 : need place empty __init__.py in every folder contains class) note 3 : can place classes in different folders. if so, use : from folder.childfilename import childclassname 2. instantiate , call chil

in sql table date_of_birth , date_of_joining data type date . need perform update . i have code , it's showing error - conversion failed when converting date and/or time character string. please help. string sql = "update employees set designation = '" +textbox_beupdtd.text + "', employee_subgroup = '" +combobox_beupdt.text + "', date_of_birth = " + datetimepicker_dobupdt.text + ", date_of_joining = " + datetimepicker_dojupdt.text + " employee_name ='"+combobox_empnm.text+"' "; sqlcommand cmd7 = new sqlcommand(, con7); con7.open(); int o = cmd7.executenonquery(); messagebox.show(o +" : record has been updated"); ' aside sql injection issues sending in user variables directly database, suggest using parameterized queries simplify you're trying do. sqlcommand cmd7 = new sqlcommand("update employees set designation = @designation, emplo

from nodejs (with express) try send json_array in response client js: asksjsonarray = json.parse(fs.readfilesync("tasks.json", 'utf-8')); app.get('/getarr', function (req, res) { readjsoncontent(); res.json(json.stringify(tasksjsonarray)); //sending json array client_js in response }); on client-side want it, nothing receive: $.get('/getarr').success(function(res) { var currencydata = json.parse(res); if (!currencydata.rates) { // possibly handle error condition unrecognized json response alert("currency data not found!"); } else { taskarr = currencydata; } }) so receive msg 'currency data not found!' ... res.json converts data json, don't have manually: res.json(tasksjsonarray); i believe set appropriate headers, on client, don't have explicitly parse json, jquery you: $.get('/getarr').done(function(currencydata){ if (!currencydata.rates) { // possibly han

i'm trying add 2 classes div using ng-class , though checkforactive returning true , it's being ignored , class_{{$index}} getting added. if remove class_{{$index}} altogether, active added correctly. is there obvious mistake in syntax here? <div "ng-class="{active: checkforactive, disabled: checkfordisable, class_{{$index}}} "></div> you provide true value key class_{{$index}} property gets added class name class list of element. way active: checkforactive . i.e {active: checkforactive, disabled: checkfordisable, class_{{$index}} :true} but believe there undesired behavior due usage of interpolation ( {{ ) within ng-class directive (atleast used happen older versions). use array. ng-class="[checkforactive && 'active' , checkfordisable && 'disabled', 'class_' + $index]" the above method add class name false if active or disabled false, should harmless. or pass inde

in string have "first & vbcrlf & name" - however, want take out & vbcrlf & doesnt cause line break. i have done if thestring.contains("& vbcrlf &") ' , replace, above of course, want go if end if and if thestring.contains("\n") ' , replace, above of course, want go if end if and "\r\n" no avail. what missing? if thestring.contains(vbcrlf) 'do end if alternatively... thestring = thestring.replace(vbcrlf, "")

i have group of people. lets call them a,b,c. have table shows how paid each month.... person|month|paid jan 10 feb 20 b jan 10 b feb 20 b sep 30 c jan 10 c june 20 c july 30 c sep 40 this table can , go on years , years.. is there way pivot table (nothing see needs aggregated done in pivots) in table looks following? jan feb mar apr may jun jul agu sep 10 20 b 10 20 - - - - - - 30 c 10 - - - - 20 30 - 40 haven't run before assume common problem ideas? if using sql server 2005 (or above), here code: declare @cols varchar(1000) declare @sqlquery varchar(2000) select @cols = stuff(( select distinct ',' + quotename([month]) yourtable xml path('') ), 1, 1, '') set @sqlquery = 'select * (select person,

is there sample can implement aggregate item reader reads data db , aggregate them 1 record based on col value? i saw similar sample reads data file , aggregate them not db. what you're asking driving query pattern of batch processing attempts accomplish. in essence, use itemreader return main object (that has id want aggregate by). there, use itemprocessor enrich item querying rest of data id. you can read more driving query pattern , other batch processing patterns in spring batch documentation here: http://docs.spring.io/spring-batch/trunk/reference/html/patterns.html

i'll referring python in question. ok, let's have script renames 1000 files.how multithread it? thought dividing files chunks makes code complex, , run 1000 thread, 1 each file, isn't going work. here code. import os import tkinter.messagebox import tkinter.ttk import tkinter.filedialog tkinter import tk, stringvar, text, end print(""" little reminder! file gets renamed can't undo,so don't screw around this. note : careful extension,you might lose files way. """) class rename: def __init__(self,path): self.p = path def rename(self): try: files = os.listdir(self.p) = 0 os.chdir(self.p) while <= len(files): ext = files[i].split(".")[-1] #you can change renaming variable,for example may add "file{}.{}".format(i,ext).. #also,don't play ext if don't know you're doing

i have data frame in r looks v1 v2 v3 v4 animal 1 2 2 3 5 dog 2 2 4 3 1 dog 3 1 4 1 1 cat 4 5 5 1 3 cat 5 5 5 5 3 bird 6 3 3 3 4 bird where used group_by group data animal. created new column v6 takes column v4, divides lower values higher values, , if value smaller .5 have v6= , ifelse has v6 = b.. there way using mutate function conditional statement in r? actual data frame larger rather not have manually. final data frame v1 v2 v3 v4 animal v6 1 2 2 3 5 dog 2 2 4 3 1 dog 3 1 4 1 1 cat 4 5 5 1 3 cat 5 5 5 5 3 bird b 6 3 3 3 4 bird b and have started df %>% mutate(type = if(min/max < .5)a, ifelse, b) but know not correct. thank you! using dplyr can try this dat %>% group_by(animal) %>% mutate(new = ifelse(min(v4)/max(v4) < 0.5, "a", "b")) #source: local data frame [6 x 6] #groups: animal # x1 v2 v3 v4 animal new #1 2 2 3

i realize there numerous posts how post json data using android , httpurlconnection. regardless of tried, post body seems never arrive / magically disappear. hoping advise me: // encrypt post data string ciphertext = crypt.encrypt(postdata, encryptionkey); int postdatalength = ciphertext.getbytes(standardcharsets.utf_8).length; byte[] bcipertext = ciphertext.getbytes(standardcharsets.utf_8); // establish connection httpsurlconnection conn = (httpsurlconnection) url.openconnection(); // set request method conn.setrequestmethod("post"); // set headers (string key : headers.keyset()) { conn.setrequestproperty(key, headers.get(key).trim()); } // set content type - application/json! conn.setrequestproperty("content-type", "application/json"); // set utf-8 charset conn.setrequestproperty("accept-charset", "utf-8"); conn.addrequestproperty("content-type&

looking advice on interesting situation using shopify. i'm building site client has products have free replacement parts available. each replacement part has variant color options. so far have had users @ company add replacement parts products in store. have filtered search results , catalog results replacment parts not show. the place want replacement parts show when user visits product, can click button says order replacement parts. screen show replacement parts product. a single replacement part may belong several products , may have different color variants. so have done far had client tag parts @ least 2 tags. tag called "part" identifies product part. , 1 or more tags "link:sku123" links part 1 or more products. on product page using liquid loop parts , display ones matched products sku. found out loop has 50 item limit... so looked @ product api, ok, except has no way filter tags. tags seem handy , yet don't see many ways use them... i&#

i'm trying integrate ffmpeg library android ndk project. followed this documentation. when try call method avcodec library av_malloc, there no problem. when try call av_rdft_init or av_rdft_calc methods, ndk gives errors as; error: undefined reference 'av_rdft_init(int, rdftransformtype)' error: undefined reference 'av_rdft_calc(rdftcontext*)' i can see methods in header file , see in libavcodec.so file's symbol table not build ndk. any ideas fix problem? in advance. problem fixed adding local_allow_undefined_symbols := true android makefile

regarding below code, how $one_sub , $two_sub become coderef's anonymous subroutines within named sub "sup"? named sub isn't 'returning' 2 anon subs; or it? (at least haven't put such statement). sub sup { $neh = sub { "this 'neh' subroutine" }; $hen = sub { "this 'hen' subroutine" }; ($neh, $hen); } ($one_sub, $two_sub) = &sup; using data::dumper::streamer show's : $code1 = sub { use warnings; use strict; no feature; use feature ':5.10'; q[this 'neh' subroutine]; }; $code1 = sub { use warnings; use strict; no feature; use feature ':5.10'; q[this 'hen' subroutine]; }; to quote perlsub : if no return found , if last statement expression, valu

we have home grown document management system , our system running slow, particularly on search. worked fine @ first, has gotten progressively slower on time. taking anywhere 30 150 seconds return results depending upon criteria. our search query. we’ve been staring @ thing left , right , can’t see place tune more. of joined fields indexed on respective tables. select distinct f.*, ts.*, fo.*, ft.*, p.*, u.*, c.*, co.*, ct.*, fs.*, fd.*, r.*, rt.*, si.*, s.* ( select distinct f.* files f join folders fo on(fo.id = f.belongs_to_folder_id) join projects p on(p.id = f.belongs_to_project_id) left outer join file_statuses fs on(fs.id = f.file_status_id) left outer join submittal_items_files sif on(sif.file_id = f.id) left outer join submittal_items si on(si.id = sif.submittal_item_id) left outer join submittals s on(s.id = si.belongs_to_submittal_id) left outer join record_types rt on(rt.id = f.record_type_id) left outer join companies co on(co.id = f.company_id) left join folder

in app when download contenteditinginput , user can selected new asset, i've tried kill previous request before starting new one. unfortunately cancelcontenteditinginputrequest: doesn't work , still progress , completion block fired when downloading done. self.asset , self.requestid have expected values. problem present when downloading asset icloud. did use api wrong way? if(self.requestid) { [self.asset cancelcontenteditinginputrequest:self.requestid]; } phcontenteditinginputrequestoptions *options = [phcontenteditinginputrequestoptions new]; options.networkaccessallowed = yes; options.progresshandler = ^(double progress, bool *stop) { // update ui }; self.asset = newasset; self.requestid = [self.asset requestcontenteditinginputwithoptions:options completionhandler:^(phcontenteditinginput *contenteditinginput, nsdictionary *info) { self.requestid = 0; // handle content editing input }]; i right me being wrong. have used api wrong way. canc

i have c# application use mysql database. built report using html. i fill string attribute tags , send content webbrowser control in new form. the report appear correctly, when call print preview dialog, webbrowser1.showprintpreviewdialog(); the header , footer appear in report values: in header: # of pages. in footer: date , "about:blank". this screenshot issue: how remove header , footer? looks may have change registry settings before printing, change them again: how programmatically change printer settings internet explorer , webbrowser control using visual c# .net https://support.microsoft.com/en-us/kb/313723 using microsoft.win32; //............................... public void iesetupfooter() { string strkey = "software\\microsoft\\internet explorer\\pagesetup"; bool bolwritable = true; string strname = "footer"; object ovalue = "test footer"; registrykey okey = registry.curr

i trying read .txt file looks "-f filename.txt". project working on requires me name of file after "-f", open file name , extract information vector string. i able except extraction. reason won't open file. here code: int main(int argc, char* argv[]) { ifstream file; string line; vector <string> lines; (int i=0; i<argc; i++) { if (strcmp( argv[1], "-f" )==0) { cout << "i here" << endl; std::string argv2 = argv[2]; cout << argv2 << endl; file.open(argv2.c_str()); if(!file.is_open()) { cout << "file failed open" << endl; } while (getline(file, line)) { lines.push_back(line); } } } (unsigned int j=0; j<lines.size(); j++) { cout << lines[j] << endl;

i have program takes in average 30 minutes run on general 64-bit linux machines. takes 150 minutes run on 64-bit linux machine oracle database running. vmstat shows program need in average 6gb memory , bi=0 on general machines. uses no more 2gb memory on oracle database server , bi high. the oracle database server has total memory=500g, sga=42112m , pga=20g. my question oracle setup restrict memory usage of other program. the following little part of top output when program running: top - 15:34:08 114 days, 12:27, 11 users, load average: 0.48, 0.60, 0.54 tasks: 872 total, 2 running, 870 sleeping, 0 stopped, 0 zombie cpu(s): 15.8%us, 3.2%sy, 0.0%ni, 64.6%id, 16.3%wa, 0.0%hi, 0.2%si, 0.0%st mem: 529409524k total, 523431316k used, 5978208k free, 788964k buffers swap: 20971516k total, 247040k used, 20724476k free, 234761252k cached pid user pr ni virt res shr s %cpu %mem time+ command 490

i have class generic type. import java.lang.reflect.array; public abstract class myclass<t> { private class<t> clazz; private class<?> arrayclazz; public myclass() { clazz = classutils.getparameterizedclass(getclass()); arrayclazz = array.newinstance(clazz, 0).getclass(); } } the utils method reads generic type of given class don't have pass same class constructor parameter. i'm trying achieve getting array class of clazz. for example if t string then clazz = string.class; arrayclazz = string[].class; i solved creating new instance of t[] , reading class. wanted know if there's better way or if there downsides method. update what i'm trying do: have generic dataprovider requests json server. use gson parse response. public abstract class dataprovider<t> { private final class<t> resourceclass; private final class arrayclass; protected dataprovider() { this.resource

i have svg , want display text within that. due limited text formatting options available in svg i've read can recommended use html text instead. thus, inside of svg whenever want show text have foreignobject , within text p . so structure is: svg -> foreignobject -> p works far! however, cannot select text within p mouse. there workaround? edit: looks works in easy example shown in answer below, reason not work in structure here. works fine me. <svg width="200px" height="80px"> <foreignobject width="200px" height="80px"> <html style="font-size:30px"> <p>select me</p> </html> </foreignobject> </svg>

i try reproduce effect of translation of images on website www.studio32avril.com . know must used jquery , css translate don't move. can me ? thanks lot. you have determine when user starts scrolling: check this question additionally have link variables image want move. solution studio32avril uses not perfomant, since browser has render every single pixel when move. better transform use translatex or translatey, these made animated movements! good luck , happy coding!

in reading of rspec, sounds doing like... expect_any_instance_of(mail).to receive(:deliver) ...should cause rspec replace deliver method it's own deliver method isn't called. in case when following error in test leads me believe still being called. failure/error: task.send_email_alert('test', dummy) errno::econnrefused: connection refused - connect(2) "localhost" port 25 here's method def send_email_alert(alert_body, alert) mail = mail.new alert.send_emails_from alert.email_address subject 'new job posted ' + alert.job_board_name body alert_body end mail.deliver! end and here's test. context 'send_email_alert' 'creates email , calls deliver method' dummy = openstruct.new(send_emails_from: 'test@test.com', job_board_name: 'test', email_address: 'test@test.com') expect(mail).to receive(:deliver).and_return(true) task.send_email_ale

i have android , windows 7 setup , audio socket not functional on windows 7 machine, want use android replacement audio socket enabling me connect external audio devices such headsets or speaker using bluetooth or preferably usb connection. possible? saw article using phone mic(input), non far using input/output. install example jetaudio(with jetcast plugin) on windows 7 device, on jetcast create steam, on android device can used existed radio player or crate own online radio streaming app android . easy way.

i try use spin.js i want pop in middle of div element. did set: position: 'relative' top:'50%' left:'50%' but top option doesn't work. after analyzing problem break down html/css problem: <div style="background-color: red"> <div style="position:relative; height:20px; width:20px; top:50%; left:50%; background-color:blue"></div> 1st div line<br>br line<br>br line 2 <div>div line 1</div> <div>div line 2</div> </div> in example blue element should in middle of red, isn't. , here fillde it: http://jsfiddle.net/exu77/obcg3cxv/ this plunker original version spin.js http://plnkr.co/edit/qwjardtnqgzqgbkqiryt?p=preview the position:relative must applied parent element, i.e. div contains spinner. spinner needs position:absolute (which default). here is updated version of plunker spinner centered inside red box: http://plnkr.co/edit/gstxjdz

this image: . you know how progress bars work, if give value of 50, , later use javascript change transition, smooth, , progress bar filled. now, see white portion in image? say, there field called votes . based on value of votes, same amount of color should filled inside coffee image. (replacing equal amount of white.) yes, can develop hundred images, , in photoshop, pretty lame. there thing called keyframes, , there animations, not able findna way animate using css. i have seen on behance , , common thing. crazy thing is, cant find on google. in simple words, based on amount of votes, white portion should replaced equal amount of other color. like this: codepen.io: image filling progress turn image transparent png, , have colored div behind image change height based on number of votes.

i have need work large numbers (something in range 1e100 - 1e200). however, biginteger class, seems suitable in general, not recognize strings in scientific format during initialization, not support conversion string in format. bigdecimal d = new bigdecimal("1e10"); //works biginteger i1 = new biginteger("10000000000"); //works biginteger i2 = new biginteger("1e10"); //throws numberformatexception system.out.println(d.toengineeringstring()); //works system.out.println(i1.toengineeringstring()); //method undefined is there way around? cannot imagine such class designed assumption users must type hundreds of zeros in input. scientific notation applies biginteger s in limited scope - i.e. when number in front of e has many or fewer digits after decimal point value of exponent. in other situations information lost. java provides way work around letting bigdecimal parse scientific notation you, , converting value biginteger using tobigint

why getting error: cannot find overload 'contains' accepts argument type '[vetex], vertex' if var child = extracted.child { var visited = [vertex]() { child.parent = nil child = child.next visited.append(child) } while contains(visited, child) == false } your vertex class should confirm equatable protocol. // class declaration class vertex : equatable { } func ==(lhs: vertex, rhs: vertex) -> bool { // implement own logic here return lhs.yourproperty == rhs.yourproperty } this tutorial : swift comparison protocols

i python beginner, , decided wanted create program on summer holiday, before did decided make small program before, practice creating gui's. working on joke machine, uses random module select random integer decide joke displayed, seems ever output joke 3, regardless of how many times run it. i can't see issues here, advice? joke_select = random.randint (1,3) joke1 = "why never see elephants hiding in trees?\n because they're @ it!" joke2 = "what grey , can't climb tree? \n parking lot" joke3 = "what red , bad teeth?\n brick" if joke_select == '1': joke_label = tkinter.label (main, text = joke1) elif joke_select == '2': joke_label = tkinter.label (main, text = joke2) else: joke_label = tkinter.label (main, text = joke3) def get_joke(): joke_label.pack () if joke_select == '1': joke_select ever integer, you're comparing string here. try comparing integer instead. if joke_se

i'm facing problem wcf restfull webservice, problem 1 method others working correctly, think isn't general configuration problem. have idea of problem don't know how solve it. method have access third party webservice retrieve object of following class: [datacontract] public class devicedata { [datamember] public int devicedatafull { get; set; } [datamember] public string devicedataversion { get; set; } [datamember] public string devicedatamodel { get; set; } [datamember] public int devicedatazwave_heal { get; set; } [datamember] public string devicedatatemperature { get; set; } [datamember] public string devicedataskin { get; set; } [datamember] public string devicedataserial_number { get; set; } [datamember] public string devicedatafwd1 { get; set; } [datamember] public string devicedatafwd1token { get; set; } [datamember] public string devicedatafwd2 { get; set; } [datamember] p

i tried enable object cache wordpress using memcache. , put object-cache.php /wp-content/, memcached object cache plugin. and php fatal error: class 'memcache' not found occurred. install memcache extension executing sudo yum -y install php-pecl-memcache , sudo service httpd restart . nothing changed. i tried install php-pecl-memcached , not php-pecl-memcache . nothing had changed. i confirmed /etc/php.d/memcache.ini file existed , extension=memcache.so loaded in file. please give me advice solve this. when tried new ec2 instance, worked well. guess environment preventing in ways. ideas? fire command dpkg -l | grep php5 , check packages installed. check php5-memcache , php5-memcached. if not installed install those

i'm trying make spring-boot-legacy:1.0.1.release & spring-boot-starter-parent:1.1.8.release gae 1.9.19. however, upon running via mvn appengine:devserver, following error prevents app running: [info] java.lang.noclassdeffounderror: java.lang.reflect.parameter restricted class. please see google app engine developer's guide more details. [info] @ com.google.appengine.tools.development.agent.runtime.runtime.reject(runtime.java:52) [info] @ org.springframework.core.standardreflectionparameternamediscoverer.getparameternames(standardreflectionparameternamediscoverer.java:53) [info] @ org.springframework.core.prioritizedparameternamediscoverer.getparameternames(prioritizedparameternamediscoverer.java:65) [info] @ org.springframework.beans.factory.support.constructorresolver.autowireconstructor(constructorresolver.java:182) [info] @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.autowireconstructor(abstractautowirecapablebeanfactory.java: