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  • Return NSString from a recursive function

    - by Dave
    Hi, I have a recursive function that is designed to take parse a tree and store all the values of the tree nodes in an NSString. Is the algorithm below correct? NSString* finalString = [self parseTree:rootNode string:@""]; -(NSString*)parseTree:(Node*)currentNode string:(NSMutableString*)myString { [myString appendText:currentNode.value]; for(int i=0;i<[currentNode.children length];i++){ return [self parseTree:[currentNode.children] objectAtIndex:i] string:myString]; } }

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  • wait t time before launch an action ?

    - by Nanis
    Hi, I actually had a multiautocompletetextview, where i call host after 3 characters to have a dynamic search list. But if the user put others characters, my code call host for each of them. So it must be very long. Could I wait a moment (about 500 ms) before launching the action , in order to look if user do an action or not ? that's possible ?

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  • Modifying MySQL Where Statement Based on Array

    - by Ryan
    Using an array like this: $data = array ( 'host' => 1, 'country' => 'fr', ) I would like to create a MySQL query that uses the values of the array to form its WHERE clause like: SELECT * FROM table WHERE host = 1 and country = 'fr' How can I generate this query string to use with MySQL?

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  • Exception Handaling in google app engine

    - by Rahul99
    i am raising exception using if UserId == '' and Password == '': raise Exception.MyException , "wrong userId or password" but i want print the error message on same page class MyException(Exception): def __init__(self,msg): Exception.__init__(self,msg)

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  • Dynamic class_name for has_many relations

    - by vooD
    I'm trying to make has_many relation with dynamic class_name attribute class Category < ActiveRecord::Base has_many :ads, :class_name => ( lambda { return self.item_type } ) end or class Category < ActiveRecord::Base has_many :ads, :class_name => self.item_type end But i got errors: can't convert Proc into String or undefined method `item_type' for #<Class:0xb62c6c88> Thank you for any help!

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  • Use pushViewController within app Delegate

    - by FMT
    Hi there i want to use this code within the app delegate ChatController *chatController = [[AppDelegate appDelegate] instantiateViewControllerWithIdentifier:@"GroupController"]; chatController.targetUserid = userid; [self.navigationController pushViewController:groupChatController animated:YES]; how can i push viewcontroller from appdelegate i mean make the above code work cuz self.navigationcontroller doesnt work :$

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  • Line Graph CGPoints from NSMutableArray

    - by Mattog1456
    I have been trying to adapt the code from the accelerometer example such that when the user depresses a uibutton a point is added to a line graph. Working on the converting two floats, which are the result of calculate as below into a CGPoint and converting the CGPoint into an NSValue and then adding this to a NSMutableArray with the following -(IBAction)calculate:(id)sender { self.points = [NSMutableArray array]; CGPoint pt = CGPointMake(d, c); [self.points addObject:[NSValue valueWithCGPoint:pt]]; NSLog(@"%@", NSStringFromCGPoint(pt)); NSLog(@"%@", [NSString stringWithFormat:@"%d points", self.points.count ]); } But for some reason I am only getting one object stored in the array, it seems everytime push the calculate button the object pt gets overwritten, on the plus side it has the correct x,y coords. Any ideas on this one? UPDATE Removed self.points = [NSMutableArray array]; and placed it in view did load, also set the first points to 0,0. so that is working ok. Now the next problem is that I have a Graph subclass where the CG Drawing is taking place. I am trying to figure out a simple way to be able to access the above NSMutableArray which is in a ViewController class from the graph class. Am so close to the end but am really stuck, any help would be great. Still trying to draw a line graph on a UIView which is on a UIScrollview. The draw rect method is in the UIView Subclass and everything is working there, I have gridlines and labels on the axis and I can draw manually onto it. But the problem I have is that I cannot read the NSMutableArray of the CGPoints, which are the x and y coords. The ViewController performs a calculation and the results are written to the NSMutable array and this is all working fine as well, I can see the CGpoints and their values being written with NSLogs in the ViewController. I have tried various ways to set the NSMutableArray up as a global but to no avail, everything runs but while I can see the points being written in the ViewController they are just not visible to the UIView Subclass. I have also tried to use the addObserver and observeValueForKeyPath methods and once again while everything runs the subclass cannot see the array. Any ideas, suggestions, tips or thoughts would be great

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  • Model def in View State

    - by tinzawtun
    In my ruby on rails project in model, I have some of definition. class PlaySport < ActiveRecord::Base belongs_to :user belongs_to :sport def self.getLevel end def self.check_play_sport(cuser_id,sport_id) end def current_playing_sport end def all_played_sports end end I catch for this relation like this current_user.play_sports.current_playing_sport But I get the undefined method error "current_playing_sports" What is wrong

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  • Rendering CALayer in context uses large amounts of memory

    - by Otium
    I am taking a snapshot of a UIWebView layer, but when I render the webview's layer in the current context my app uses 10mb more memory, and I don't think that should be right. Here is my current code: CGSize imageSize = self.bounds.size; UIGraphicsBeginImageContextWithOptions(imageSize, YES, 0); CGContextRef context = UIGraphicsGetCurrentContext(); [self.layer renderInContext:context]; _snapshot = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext();

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  • autoreferencing this class to use in another for c++

    - by atomsfat
    in java we can do this: public class A{ public static void main(String...str){ B b = new B(); b.doSomething(this); //How I do this in c++ ? the this self reference } } public class B{ public void doSomething(A a){ //Importat stuff happen here } } How can I do the same but in c++, I mean the self reference of A to use the method in B ?

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  • The date is always ignored

    - by TheLearner
    I cannot understand why the date is never set in the title - it's always ignored and if I swap around the date and the title, then the title is ignored! -(id)initWithCoordinate:(CLLocationCoordinate2D)c title:(NSString *)t { [super init]; coordinate = c; NSDate *today = [NSDate date]; [self setTitle:(@"%@%@", [today description], t)]; //[today release]; return self; }

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  • Set parameter to super view after dismissModalViewControllerAnimated

    - by user536926
    Hi, I have 2 view (view A and view B). In viewA when I touch a button I execute this code to flip a viewB: viewB.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:viewB animated:YES]; And now when I came back to viewA I use this code: [self dismissModalViewControllerAnimated: YES]; //here is my problem I need to set same parameters to viewA when I execute dismiss. How can I do it?

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  • Sending / Forwarding variable arguments in ObjectiveC

    - by Authman Apatira
    I know this is possible in other programming languages. Suppose we have the following arrangement: - (void) myMethod:(NSString*)variables, ... { // Handle business here. } - (void) anotherMethod:(NSString*)variables, ... { // We want to pass these variable arguments for handling [self myMethod:variables, ...]; // Do not pass GO } // Start the party: [self anotherMethod:@"arg1", @"arg2", @"arg3", @"arg4", nil]; What's the trick to get this working in ObjC?

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  • Implicit conversion causes stack overflow

    - by user44242
    The following code snippet worked perfectly, then after some code changes in different files, I've started getting stack overflows resulting from recursive invocation of the implicit conversion. Has this ever happened to anyone, and if so what's the fix. implicit def comparable2ordered[A <: Comparable[_]](x: A): Ordered[A] = new Ordered[A] with Proxy { val self = x def compare(y: A): Int = { self.compareTo(y) } }

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  • [Linq & Dictionary (.NET)] A problem with compare item value

    - by Tony
    Hi, I have defined my class: public class Host { public string Name; } then a strobgly-typed dictionary: Dictionary<string, Host> HostsTable; then I try to compare a value: if (HostsTable.Values.Where(s => s.Name == "myhostname") != null) { doSomething } and the problem is, nothing is found, even I'm sure the item is on the list. What I'm doing wrong ?

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  • calling a cdef in a cdef class

    - by Davoud Taghawi-Nejad
    Hello, is their any way to make this work, without sacrificing the cdef in cdef caller? (no use of cpdef either) from array import * from numpy import * cdef class Agents: cdef public caller(self): print "caller" A[2].called() cdef called(self): print "called" A = [Agents() for i in range(2)] def main(): A[1].caller()

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  • Removing &NBSP; in Rails

    - by Trip
    I am trying to remove all &nbsp;'s in my model with the following method : def about_us_sans_spaces self.about_us = replace(self.about_us, "&nbsp;", " ") end Except! it turns out 'replace' isn't a method in rails. How would you remove the  s? Mind you, I have already tried sanitized, simple_format. My view looks like this right now: = truncate(sanitize(simple_format(organization.about_us_sans_spaces), :tags => ''), 125).titleize

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  • MySql LINK to SQL Server

    - by XkiD
    I have a host with php+mysql and i need to run a script here to register accounts to another host that has SQL Server and i also have php+mysql here also , but i need the accounts to be in SQL Server. how can i do this?

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  • Timer (NSTimer) won't work...why?

    - by eco_bach
    Hi I have the following, can anyone familiar with NSTimer tell me why it isn't working?? I've tried various values for an interval but no luck. self.timer = [NSTimer scheduledTimerWithTimeInterval:.5 target:self selector:@selector(update:) userInfo:nil repeats:YES]; And then my selector method - (void)update:(NSTimer*)timer { //DOESN"T TRACE OUT! NSLog(@" update:theTimer and userInfo = %@",timer.userInfo); }

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  • Restler RC3 Install

    - by user1769713
    Is there a way to 'copy and paste' the RC3 to my host without having to run 'make composer-install'? Unfortunately my host is lousy and doesn't allow for this. Restler 2 was as easy to install as putting the files into a directory and making a few config changes. That doesn't appear to be the case anymore. I love Restler 2 but need the functionality offered in RC3. Any insight is greatly appreciated!

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  • GeoIP and Nginx

    - by JavierMartinez
    I have a nginx with geoip, but it is not working rightly. The issue is the next: Nginx are getting geodata from $_SERVER['REMOTE_ADDR'] instead of $_SERVER['HTTP_X_HAPROXY_IP'], which have the real client ip. So, the reported geodata belongs to my server ip instead of client ip. Does anybody where could be the error to fix it? Nginx version and compiled modules: nginx -V nginx version: nginx/1.2.3 TLS SNI support enabled configure arguments: --prefix=/etc/nginx --conf-path=/etc/nginx/nginx.conf --error-log- path=/var/log/nginx/error.log --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-log-path=/var/log/nginx/access.log --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --lock-path=/var/lock/nginx.lock --pid-path=/var/run/nginx.pid --with-pcre-jit --with-debug --with-file-aio --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_realip_module --with-http_secure_link_module --with-http_stub_status_module --with-http_ssl_module --with-http_sub_module --with-http_xslt_module --with-ipv6 --with-sha1=/usr/include/openssl --with-md5=/usr/include/openssl --with-mail --with-mail_ssl_module --add-module=/usr/src/nginx/source/nginx-1.2.3/debian/modules/nginx-auth-pam --add-module=/usr/src/nginx/source/nginx-1.2.3/debian/modules/nginx-echo --add-module=/usr/src/nginx/source/nginx-1.2.3/debian/modules/nginx-upstream-fair --add-module=/usr/src/nginx/source/nginx-1.2.3/debian/modules/nginx-dav-ext-module --add-module=/usr/src/nginx/source/nginx-1.2.3/debian/modules/nginx-syslog --add-module=/usr/src/nginx/source/nginx-1.2.3/debian/modules/nginx-cache-purge nginx site conf (frontend machine) server { root /var/www/storage; server_name ~^.*(\.)?mydomain.com$; if ($host ~ ^(.*)\.mydomain\.com$) { set $new_host $1.mydomain.com; } if ($host !~ ^(.*)\.mydomain\.com$) { set $new_host www.mydomain.com; } add_header Staging true; real_ip_header X-HAProxy-IP; set_real_ip_from 10.5.0.10/32; location /files { expires 30d; if ($uri !~ ^/files/([a-fA-F0-9]+)_(220|45)\.jpg$) { return 403; } rewrite ^/files/([a-fA-F0-9][a-fA-F0-9])([a-fA-F0-9][a-fA-F0-9])([a-fA-F0-9][a-fA-F0-9])([a-fA-F0-9][a-fA-F0-9])([a-fA-F0-9]+)_(220|45)\.jpg$ /files/$1/$2/$3/$4/$1$2$3$4$5_$6.jpg break; try_files $uri @to_backend; } location /assets { if ($uri ~ ^/assets/r([a-zA-Z0-9]+[^/])(/(css|js|fonts)/.*)) { rewrite ^/assets/r([a-zA-Z0-9]+[^/])/(css|js|fonts)/(.*)$ /assets/$2/$3 break; } try_files $uri @to_backend; } location / { proxy_set_header Host $new_host; proxy_set_header X-HAProxy-IP $remote_addr; proxy_pass http://10.5.0.10:8080; } location @to_backend { proxy_set_header Host $new_host; proxy_pass http://10.5.0.10:8080; } } nginx.conf (backend machine) http{ ... ## # GeoIP Config ## geoip_country /etc/nginx/geoip/GeoIP.dat; # the country IP database geoip_city /etc/nginx/geoip/GeoLiteCity.dat; # the city IP database ... } fastcgi_params (backend machine) ### SET GEOIP Variables ### fastcgi_param GEOIP_COUNTRY_CODE $geoip_country_code; fastcgi_param GEOIP_COUNTRY_CODE3 $geoip_country_code3; fastcgi_param GEOIP_COUNTRY_NAME $geoip_country_name; fastcgi_param GEOIP_CITY_COUNTRY_CODE $geoip_city_country_code; fastcgi_param GEOIP_CITY_COUNTRY_CODE3 $geoip_city_country_code3; fastcgi_param GEOIP_CITY_COUNTRY_NAME $geoip_city_country_name; fastcgi_param GEOIP_REGION $geoip_region; fastcgi_param GEOIP_CITY $geoip_city; fastcgi_param GEOIP_POSTAL_CODE $geoip_postal_code; fastcgi_param GEOIP_CITY_CONTINENT_CODE $geoip_city_continent_code; fastcgi_param GEOIP_LATITUDE $geoip_latitude; fastcgi_param GEOIP_LONGITUDE $geoip_longitude; haproxy.conf (frontend machine) defaults log global option forwardfor option httpclose mode http retries 3 option redispatch maxconn 4096 contimeout 100000 clitimeout 100000 srvtimeout 100000 listen cluster_webs *:8080 mode http option tcpka option httpchk option httpclose option forwardfor balance roundrobin server backend-stage 10.5.0.11:80 weight 1 $_SERVER dump: http://paste.laravel.com/7dy Where 10.5.0.10 is frontend private ip and 10.5.0.11 backend private ip

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  • Postfix/SMTPD Relay Access Denied when sending outside the network

    - by David
    I asked a very similar question some 4 or 5 months ago, but haven't tracked down a suitable answer. I decided to post a new question so that I can ... a) Post updated info b) post my most current postconf -n output When a user sends mail from inside the network (via webmail) to email addresses both inside and outside the network, the email is delivered. When a user with an email account on the system sends mail from outside the network, using the server as the relay, to addresses inside the network, the email is delivered. But [sometimes] when a user connects via SMTPD to send email to an external address, a Relay Access Denied error is returned: Feb 25 19:33:49 myers postfix/smtpd[8044]: NOQUEUE: reject: RCPT from host-68-169-158-182.WISOLT2.epbfi.com[68.169.158.182]: 554 5.7.1 <host-68-169-158-182.WISOLT2.epbfi.com[68.169.158.182]>: Client host rejected: Access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<my-computer-name> Feb 25 19:33:52 myers postfix/smtpd[8044]: disconnect from host-68-169-158-182.WISOLT2.epbfi.com[68.169.158.182] Sending this through Microsoft Outlook 2003 generates the above log. However, sending through my iPhone, with the exact same settings, goes through fine: Feb 25 19:37:18 myers postfix/qmgr[3619]: A2D861302C9: from=<[email protected]>, size=1382, nrcpt=1 (queue active) Feb 25 19:37:18 myers amavis[2799]: (02799-09) FWD via SMTP: <[email protected]> -> <[email protected]>,BODY=7BIT 250 2.0.0 Ok, id=02799-09, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as A2D861302C9 Feb 25 19:37:18 myers amavis[2799]: (02799-09) Passed CLEAN, [68.169.158.182] [68.169.158.182] <[email protected]> -> <[email protected]>, Message-ID: <[email protected]>, mail_id: yMLvzVQJloFV, Hits: -9.607, size: 897, queued_as: A2D861302C9, 6283 ms Feb 25 19:37:18 myers postfix/lmtp[8752]: 2ED3A1302C8: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=6.6, delays=0.25/0.01/0.19/6.1, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=02799-09, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as A2D861302C9) Feb 25 19:37:18 myers postfix/qmgr[3619]: 2ED3A1302C8: removed Outgoing Settings on Outlook 2003 match the settings on my iPhone: SMTP server: mail.my-domain.com Username: My full email address Uses SSL Server Port 587 Now, here's postconf -n. I realize the "My Networks" Parameter is a bit nasty. I have these IP addresses in here for just this reason, as others have been complaining of this problem too: alias_database = hash:/etc/postfix/aliases alias_maps = $alias_database append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix content_filter = amavisfeed:[127.0.0.1]:10024 daemon_directory = /usr/libexec/postfix debug_peer_level = 2 disable_vrfy_command = yes html_directory = no inet_interfaces = all mail_owner = postfix mail_spool_directory = /var/spool/mail mailbox_size_limit = 0 mailq_path = /usr/bin/mailq manpage_directory = /usr/share/man message_size_limit = 20480000 mydestination = $myhostname, localhost, localhost.$mydomain mydomain = my-domain.com myhostname = myers.my-domain.com mynetworks = 127.0.0.0/8, 74.125.113.27, 74.125.82.49, 74.125.79.27, 209.85.161.0/24, 209.85.214.0/24, 209.85.216.0/24, 209.85.212.0/24, 209.85.160.0/24 myorigin = $myhostname newaliases_path = /usr/bin/newaliases queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES receive_override_options = no_address_mappings recipient_delimiter = + relay_domains = $mydestination sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail setgid_group = postdrop smtp_bind_address = my-primary-server's IP address smtpd_banner = mail.my-domain.com smtpd_helo_required = yes smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_tls_auth_only = yes smtpd_tls_cert_file = /etc/ssl/mailserver/postfix.pem smtpd_tls_key_file = /etc/ssl/mailserver/private/postfix.pem smtpd_tls_loglevel = 3 smtpd_tls_received_header = no smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes tls_random_source = dev:/dev/urandom unknown_local_recipient_reject_code = 554 virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf,mysql:/etc/postfix/mysql-email2email.cf virtual_gid_maps = static:5000 virtual_mailbox_base = /var/vmail virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf virtual_minimum_uid = 5000 virtual_transport = dovecot virtual_uid_maps = static:5000 If anyone has any ideas and can help me finally solve this issue once and for all, I'd be eternally grateful.

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