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  • NSFetchedResultsController doesn't fetch up the child-parent moc chain?

    - by Kronusdark
    I cannot find any clarification on this, so it may be a bug. Problem is, I have a series of parent-child Managed Object Context's. When I save on a child context the changes get pushed up to the parent, and I can fetch using a plain old NSFetchRequest. However, if I rely on an NSFetchedResultsController to pull these changes into a sibling context to the first, they do not see them. calling -(void)performFetch: error; doesn't seem to pull the changes either. After a restart of the app, all new data is available. My hypothesis is that NSFetchedResultsController only fetches from its current context and will not follow the chain to the persistent store. Can someone please set me straight here? Am I going to have to use notifications to monitor changes on other contexts? and finally, is this mentioned somewhere in the doc's? I cannot find it for the life of me.

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  • Ubuntu 12.04 server froze during the first boot after it was installed.

    - by user69021
    I installed Ubuntu server 12.04 to my new server and it failed on the first boot. It just stopped and I can't proceed any further. Server's specifications: Dell PowerEdge T620 CPU : Xeon E5-2665 2.4G x 2 RAM : 8GB RDIMM, 1333MHz x 12 HDD : 3TB Near Line SAS 7.2K x 8 RAID controller : PERC H710 GPU : NVIDIA Tesla C2075 x 4 I have a screenshot of the screen it stopped on but I cannot attach it because my privilege level is currently too low. ![freeze on boot][1] Here are the last messages while booting. [5.048743] Freeing unused kernel memory : 920k freed [5.049046] Write protecting the kernel read-only data : 12288k [5.052973] Freeing unused kernel memory : 1608k freed [5.056132] Freeing unused kernel memory : 1196k freed Loading, please wait... [5.070236] udevd[218]: starting version 175 Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. [5.089030] megasas: 00.00.06.12-rc1 Wed. Oct. 5 17:00:00 PDT 2011 [5.089518] megasas: 0x1000:0x005b:0x1028:0x1f35: bus 1:slot 0:func 0 [5.089739] megaraid_sas 0000:01:00.0: PCI INT A -> GSI 34 (level, low) -> IRQ 34 [5.089937] megasas: FW now in Ready state [5.090427] dca service started, version 1.12.1 [5.091463] Intel(R) Gigabit Ethernet Network Driver - version 3.2.10-k [5.091578] Copyright (c) 2007-2011 Intel Corporation. [5.091712] igb 0000:06:00.0: PCI INT A -> GSI 16 (level,low) -> IRQ 16 [5.111090] megasas:IOC Init cmd success [5.123124] usb 1-1:new high-speed USB device number 2 using ehci_hcd What can I do about this?

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  • How to instert child entities in JDO (Google App Engine) ?

    - by Kerem Pekçabuk
    How do i add a record to a child entity in the example below ? For example i have a Employee Record which is name is "Sam". how do i add 2 street adress for sam ? Guess i have a The Parent entity is Employee import java.util.List; // ... @Persistent(mappedBy = "employee") private List contactInfoSets; The Child key is Adress import com.google.appengine.api.datastore.Key; // ... imports ... @PersistenceCapable public class ContactInfo { @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private Key key; @Persistent private String streetAddress; // ... }

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  • Using JQuery to get text of a div that's a child of a header to replace a different header

    - by Stevie Jenowski
    Hello all, I'm trying to get the text contents of a .div('.child#') child of my event.target('h6.class'), and replace my other headers('h1.replacHeader#') using this script below... $('h6.class').click(function(event) { var $target = $(event.target); $('.replaceHeader1').replaceWith("<h1 class='replaceHeader1'>" + $target.children(".child1").text() + "</h1>"); $('.replaceHeader2').replaceWith("<h1 class='replaceHeader2'>" + $target.children(".child2").text() + "</h1>"); }); }); I've noticed that .text() apparently doesn't apply to an event.target... So how could I go about achieving this?

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  • English major new to programming. What language should I learn first? [closed]

    - by PJKaka
    After working extensively an internet startup in a marketing positions, I've decided to wade into the entrepreneurship pool with a startup of my own. The only problem: I don't have any particular technical skills to speak of. Although I can find a technical co-founder, I'd rather not be the stereotypical 'business guy' drumming his fingers on the desk and asking 'how much longer?' as my technical co-founder codes away. I would like to understand code and what's happening in the backend, even if I don't end up being anything more than a 'passable' programmer. With this in mind, which language should I try to learn first? For the record, I'm quite proficient with HTML, CSS, and a bit of JavaScript. I have some familiarity with PHP because I've toyed around with WordPress a lot, but my knowledge is limited at best. My math skills are quite strong. I took some advanced calculus courses in college since I've always enjoyed the subject. While my goals are to learn web development, I wouldn't mind learning some hardcore object oriented programming skills in C or Java as well.

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  • PHP: How to Pass child class __construct() arguments to parent::__construct() ?

    - by none
    I have a class in PHP like so: class ParentClass { function __construct($arg) { // Initialize a/some variable(s) based on $arg } } It has a child class, as such: class ChildClass extends ParentClass { function __construct($arg) { // Let the parent handle construction. parent::__construct($arg); } } What if, for some reason, the ParentClass needs to change to take more than one optional argument, which I would like my Child class to provide "just in case"? Unless I re-code the ChildClass, it will only ever take the one argument to the constructor, and will only ever pass that one argument. Is this so rare or such a bad practice that the usual case is that a ChildClass wouldn't need to be inheriting from a ParentClass that takes different arguments? Essentially, I've seen in Python where you can pass a potentially unknown number of arguments to a function via somefunction(*args) where 'args' is an array/iterable of some kind. Does something like this exist in PHP? Or should I refactor these classes before proceeding?

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  • What is causing the unusual high load average?

    - by James
    I noticed on Tuesday night of last week, the load average went up sharply and it seemed abnormal since the traffic is small. Usually, the numbers usually average around .40 or lower and my server stuff (mysql, php and apache) are optimized. I noticed that the IOWait is unusually high even though the processes is barely using any CPU. top - 01:44:39 up 1 day, 21:13, 1 user, load average: 1.41, 1.09, 0.86 Tasks: 60 total, 1 running, 59 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 0.0%sy, 0.0%ni, 91.5%id, 8.5%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 331944k used, 716632k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 15 0 2468 1376 1140 S 0 0.1 0:00.92 init 1656 root 15 0 13652 5212 664 S 0 0.5 0:00.00 apache2 9323 root 18 0 13652 5212 664 S 0 0.5 0:00.00 apache2 10079 root 18 0 3972 1248 972 S 0 0.1 0:00.00 su 10080 root 15 0 4612 1956 1448 S 0 0.2 0:00.01 bash 11298 root 15 0 13652 5212 664 S 0 0.5 0:00.00 apache2 11778 chikorit 15 0 2344 1092 884 S 0 0.1 0:00.05 top 15384 root 18 0 17544 13m 1568 S 0 1.3 0:02.28 miniserv.pl 15585 root 15 0 8280 2736 2168 S 0 0.3 0:00.02 sshd 15608 chikorit 15 0 8280 1436 860 S 0 0.1 0:00.02 sshd Here is the VMStat procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 1 0 0 768644 0 0 0 0 14 23 0 10 1 0 99 0 IOStat - Nothing unusal Total DISK READ: 67.13 K/s | Total DISK WRITE: 0.00 B/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 19496 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19501 be/4 mysql 3.95 K/s 0.00 B/s 0.00 % 0.00 % mysqld 19568 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19569 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19570 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19571 be/4 chikorit 7.90 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19573 be/4 chikorit 7.90 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init 11778 be/4 chikorit 0.00 B/s 0.00 B/s 0.00 % 0.00 % top 19470 be/4 mysql 0.00 B/s 0.00 B/s 0.00 % 0.00 % mysqld Load Average Chart - http://i.stack.imgur.com/kYsD0.png I want to be sure if this is not a MySQL problem before making sure. Also, this is a Ubuntu 10.04 LTS Server on OpenVZ. Edit: This will probably give a good picture on the IO Wait top - 22:12:22 up 17:41, 1 user, load average: 1.10, 1.09, 0.93 Tasks: 33 total, 1 running, 32 sleeping, 0 stopped, 0 zombie Cpu(s): 0.6%us, 0.2%sy, 0.0%ni, 89.0%id, 10.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 260708k used, 787868k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 15 0 2468 1376 1140 S 0 0.1 0:00.88 init 5849 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 8063 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 9732 root 16 0 8280 2728 2168 S 0 0.3 0:00.02 sshd 9746 chikorit 18 0 8412 1444 864 S 0 0.1 0:01.10 sshd 9747 chikorit 18 0 4576 1960 1488 S 0 0.2 0:00.24 bash 13706 chikorit 15 0 2344 1088 884 R 0 0.1 0:00.03 top 15745 chikorit 15 0 12968 5108 1280 S 0 0.5 0:00.00 apache2 15751 chikorit 15 0 72184 25m 18m S 0 2.5 0:00.37 php5-fpm 15790 chikorit 18 0 12472 4640 1192 S 0 0.4 0:00.00 apache2 15797 chikorit 15 0 72888 23m 16m S 0 2.3 0:00.06 php5-fpm 16038 root 15 0 67772 2848 592 D 0 0.3 0:00.00 php5-fpm 16309 syslog 18 0 24084 1316 992 S 0 0.1 0:00.07 rsyslogd 16316 root 15 0 5472 908 500 S 0 0.1 0:00.00 sshd 16326 root 15 0 2304 908 712 S 0 0.1 0:00.02 cron 17464 root 15 0 10252 7560 856 D 0 0.7 0:01.88 psad 17466 root 18 0 1684 276 208 S 0 0.0 0:00.31 psadwatchd 17559 root 18 0 11444 2020 732 S 0 0.2 0:00.47 sendmail-mta 17688 root 15 0 10252 5388 1136 S 0 0.5 0:03.81 python 17752 teamspea 19 0 44648 7308 4676 S 0 0.7 1:09.70 ts3server_linux 18098 root 15 0 12336 6380 3032 S 0 0.6 0:00.47 apache2 18099 chikorit 18 0 10368 2536 464 S 0 0.2 0:00.00 apache2 18120 ntp 15 0 4336 1316 984 S 0 0.1 0:00.87 ntpd 18379 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 18387 mysql 15 0 62796 36m 5864 S 0 3.6 1:43.26 mysqld 19584 root 15 0 12336 4028 668 S 0 0.4 0:00.02 apache2 22498 root 16 0 12336 4028 668 S 0 0.4 0:00.00 apache2 24260 root 15 0 67772 3612 1356 S 0 0.3 0:00.22 php5-fpm 27712 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 27730 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 30343 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 30366 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 This is the free ram as of today. total used free shared buffers cached Mem: 1024 302 721 0 0 0 -/+ buffers/cache: 302 721 Swap: 0 0 0 Update: Looking into the logs, particularly the PHP5-FPM, which is causing the CPU spike. I found that its segment faulting for some apparent reason. [03-Jun-2012 06:11:20] NOTICE: [pool www] child 14132 started [03-Jun-2012 06:11:25] WARNING: [pool www] child 13664 exited on signal 11 (SIGSEGV) after 53.686322 seconds from start [03-Jun-2012 06:11:25] NOTICE: [pool www] child 14328 started [03-Jun-2012 06:11:25] WARNING: [pool www] child 14132 exited on signal 11 (SIGSEGV) after 4.708681 seconds from start [03-Jun-2012 06:11:25] NOTICE: [pool www] child 14329 started [03-Jun-2012 06:11:58] WARNING: [pool www] child 14328 exited on signal 11 (SIGSEGV) after 32.981228 seconds from start [03-Jun-2012 06:11:58] NOTICE: [pool www] child 15745 started [03-Jun-2012 06:12:25] WARNING: [pool www] child 15745 exited on signal 11 (SIGSEGV) after 27.442864 seconds from start [03-Jun-2012 06:12:25] NOTICE: [pool www] child 17446 started [03-Jun-2012 06:12:25] WARNING: [pool www] child 14329 exited on signal 11 (SIGSEGV) after 60.411278 seconds from start [03-Jun-2012 06:12:25] NOTICE: [pool www] child 17447 started [03-Jun-2012 06:13:02] WARNING: [pool www] child 17446 exited on signal 11 (SIGSEGV) after 36.746793 seconds from start [03-Jun-2012 06:13:02] NOTICE: [pool www] child 18133 started [03-Jun-2012 06:13:48] WARNING: [pool www] child 17447 exited on signal 11 (SIGSEGV) after 82.710107 seconds from start I'm thinking that this might be causing the problem. If that is the cause, probably switching it off that to fastcgi/fcgid might resolve it... but still, I want to see if something else might be causing it to do this.

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  • As a web designer, which language should I learn first for my feature career? (PHP or JavaScript) [closed]

    - by kdevs3
    Possible Duplicates: Best Programming Language for Web Development How can I choose a web development language? What language will you choose if you are going to build something big? What is the right option of programming languages and tools for building our website? What is the easiest web programing language at....? Well, I'm more of a basic web designer. I know the easy stuff pretty well. (Ya know, html, css) But I've been trying to take it to the next step and I'm contemplating about what I should learn that will help me out the most in my future web design/programming career, should it be JavaScript or maybe I should try to learn a back end programming language such as PHP. Lately, I have been hearing about a lot how JavaScript is so great and useful now, because of libraries such as jQuery and what possibility's it can bring by using Node.js and other frameworks. I've only learned the most basic of JavaScript and used some jQuery (mostly plugins) so i wouldn't know at all of what it can actually do. Would JS being so popular as it is now and useful, be a reason to stick with JavaScript and only learn it that for now? Or as a web designer, how important would it be to learn how to make a web application/website operate and functional, and know how to work with servers, etc? (Such as getting forms to work and sending data to the server and back) I've took a look at frameworks such as Code Igniter before, and looks really simple to get started with if I try to learn PHP, But I'm not sure how important it is for my career and what I would gain out of it. I'm asking because I can't decide what I should learn first. When I select it, I really want to take my time and learn the language. I don't want to spend time on learning multiple languages at the same time, so I need to pick wisely. I'm trying to turn the right direction so my career can hopefully be successful in the feature. (If money/gaining a job asked if its important, then its a yeah, it is a bit) I'm hoping I can get opinions and suggestions on this question, thanks for giving me your thoughts also.

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  • How to appear very professional on my first freelance project?

    - by iamserious
    I need some help on appearing very professional on my first freelance project. How / What should you do to achieve this? Background: I started as a full time web developer 18 months ago, two promotions later I am now a senior software engineer. I've never had any problems with designing / developing / coding a complicated system. I thought I could use some help for Christmas and I started bidding for a project and now I have one - from a very reputable lawyers association in London. I have no problem dealing with the actual implementation of the system, but I have no idea how to appear professional throughout the whole process. About the project: This lawyers association are starting a distant training courses and in addition to having a website to show off all their clients etc, they want a students area where their students would log in, download course materials allocated to them etc.. and an admin section where they assign courses to students / create new ones / upload materials etc.. Questions breakdown: 1) How should I start with the requirement gathering? Is using scrum a good idea, or should I use something like Volere Template - and what should I do with it? should I submit a copy to the client etc.. 2) How often should I meet the client? Would once a fortnight would be good? 3) What are the processes / protocols that I need to follow so that they would be satisfied with me and think that I am very professional 4) How much should I charge for the product? 5) How should I get a quote / contract / receipt for the whole project? 6) What are the steps that professional freelancers go through, during the life cycle of a project? My Research so far Looking at How much should I charge doesn't help.. I live in London, zone 1, though I have no idea how much a project of this size would cost. Help on this would be appreciated. How to be professional articles talks about the work / time management etc and not the actual process, what would real people do etc.. it's like academia theory, but not practical. If this needs revising, please let me know, do not close it because of whatever reason, I will edit the question or details to fit the needs. Thanks for reading a lengthy question.

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  • How to develop a Jquery plugin to find the first child that match with a selector?

    - by Ivan
    I'm trying to make a Jquery plugin (findFirst()) to find the first child with a given characteristics (something in the middle of the find() and children() functions. For instance, given this markup: <div id="start"> <div> <span>Hello world</span> <ul class="valid-result"> ... </ul> <ul class="valid-result"> <li> <ul class="not-a-result"> ... </ul> </li> </ul> <div> <ul class="valid-result"> ... </ul> </div> </div> </div> If you ask for $("#start").findFirst('ul') it should return all ul lists that I have tagged with the valid-result class, but not the ul with class not-a-result. It is, this function has to find the first elements that matches with a given selector, but not the inner elements that match this selector. This is the first time I try to code a Jquery function, and what I've already read doesn't helps me too much with this. The function I have developed is this: jQuery.fn.findFirst = function (sel) { return this.map(function() { return $(this).children().map(function() { if ($(this).is(sel)) { return $(this); } else { return $(this).findFirst(sel); } }); }); } It works in the sense it tries to return the expected result, but the format it returns the result is very rare for me. I suppose the problem is something I don't understand about Jquery. Here you have the JFiddle where I'm testing. EDIT The expected result after $("#start").findFirst('ul') is a set with all UL that have the class 'valid-result' BUT it's not possible to use this class because it doesn't exist in a real case (it's just to try to explain the result). This is not equivalent to first(), because first returns only one element!

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  • using flock in bash, why does killing a child process kill the parent process too?

    - by Robby
    In the code snippet below, I want the script to be limited to only running one copy at a time, and for it to restart server.x if it dies for any reason. Without flock involved, the loop correctly restarts if I kill the server process, but once I use flock to ensure the script is only running once, if I kill server.x it also kills the parent process. How can I ensure that killing the child process in a flock script keeps the parent around? #!/bin/bash set -e ( flock -x -n 200 while true do ./server.x $1 done ) 200>/var/lock/.m_rst.$1.lock

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  • When a python process is killed on OSX, why doesn't it kill the child processes?

    - by Hugh
    I found myself getting very confused a while back by some changes that I found when moving Python scripts from Linux over to OSX... On Linux, if a python script has called os.system(), and the calling process is killed, the called process will be killed at the same time. On OSX, however, if the main process is killed, anything that it launched is left behind. Is there something somewhere in OSX/Python where I can change this behaviour? This is causing problems on our render farm, where the processes can be killed from the management GUI, but the top level process is really just a wrapper, so, while the render farm management might think that the process has gone and the machine is freed up for another task, the actual processor-intensive task is still running, which can lead to huge blockages. I know that I could write more logic to catch the kill signal and pass it on to the child processes, but I was hoping that it might be something that could be enabled at a lower level.

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  • JQuery tablesorter - Keeping grouped subheaders together, but still sorted

    - by hfidgen
    Hiya, I'm not really a Javascript programmer, so I'm struggling with this! I'm using the tablesorter plugin along with the Tablegroup plugin, which work very nicely to group the table rows by a parent, and then sort the parents. My problem is though, that I'd also like the child rows to be sorted whilst within the parent group I've done my best to get this working but I'm afraid I've hit a wall. Can anyone suggest a new starter for 10? The example below is working fine - There are 2x groups here: Nordics (Norway and Denmark) DACH (Germany and Austria) If I click on the header row, the groups are sorted, but the child rows within the group are not sorted. <script type="text/javascript"> $(document).ready(function () { $(".tablesorter") .tablesorter({ // set default sort column sortList: [[0,0]], // don't sort by first column headers: {0: {sorter: false}} , onRenderHeader: function (){ this.wrapInner("<span></span>"); } , debug: true }) }); </script> <table id="results-header" class="grid tablesorter table-header" cellpadding="0" cellspacing="0" border="0"> <thead> <tr class="title"> <th class="countries">&nbsp;</th> <th>% market share</th> <th>% increase in mkt share</th> <th>Target achieved</th> <th>% targets</th> <th>% sales inc. M-o-M</th> <th>% sales inc. M-o-M for country</th> <th>% training</th> </tr> </thead> <tbody> <tr id="Nord" class="collapsible parent parent-even collapsed"> <td class="countries">Nordics</td> <td>39.5</td> <td>49</td> <td>69.8</td> <td>51.8</td> <td>43</td> <td>42.5</td> <td>38</td> </tr> <tr id="row-Norway" class="expand-child child child-Nord"> <td class="countries">Norway</td> <td>6</td> <td>45</td> <td>101</td> <td>10</td> <td>20</td> <td>40</td> <td>30</td> </tr> <tr id="row-Denmark" class="expand-child child child-Nord"> <td class="countries">Denmark</td> <td>10</td> <td>20</td> <td>3</td> <td>40</td> <td>50</td> <td>25</td> <td>8</td> </tr> <tr id="DACH" class="collapsible parent parent-odd collapsed"> <td class="countries">DACH</td> <td>77</td> <td>61</td> <td>43</td> <td>98</td> <td>65</td> <td>92.5</td> <td>59.5</td> </tr> <tr id="row-Germany" class="expand-child child child-DACH"> <td class="countries">Germany</td> <td>56</td> <td>24</td> <td>84</td> <td>98</td> <td>32</td> <td>87</td> <td>21</td> </tr> <tr id="row-Austria" class="expand-child child child-DACH"> <td class="countries">Austria</td> <td>98</td> <td>98</td> <td>2</td> <td>98</td> <td>98</td> <td>98</td> <td>98</td> </tr> </tbody> </table>

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  • Segmentation fault when running a python script/GTKBuilder app?

    - by pythonscript
    I'm trying to learn GUI programming using python2 and GTKBuilder, but I get a segmentation fault when I run the code. This is my file, created in Glade as a GTKBuilder file: <?xml version="1.0" encoding="UTF-8"?> <interface> <!-- interface-requires gtk+ 3.0 --> <object class="GtkWindow" id="mainWindow"> <property name="can_focus">False</property> <child> <object class="GtkBox" id="box1"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="orientation">vertical</property> <child> <object class="GtkBox" id="box2"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="halign">start</property> <property name="margin_left">146</property> <property name="margin_right">276</property> <child> <object class="GtkLabel" id="label1"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">label</property> </object> <packing> <property name="expand">True</property> <property name="fill">False</property> <property name="position">0</property> </packing> </child> <child> <object class="GtkEntry" id="entryName"> <property name="visible">True</property> <property name="can_focus">True</property> <property name="margin_bottom">4</property> <property name="hexpand">True</property> <property name="vexpand">True</property> <property name="invisible_char">?</property> <property name="placeholder_text">Please enter your name here...</property> </object> <packing> <property name="expand">True</property> <property name="fill">True</property> <property name="position">1</property> </packing> </child> </object> <packing> <property name="expand">False</property> <property name="fill">True</property> <property name="position">0</property> </packing> </child> <child> <object class="GtkButton" id="buttonWriteNameToFile"> <property name="label" translatable="yes">button</property> <property name="use_action_appearance">False</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="use_action_appearance">False</property> <signal name="clicked" handler="buttonWriteNameToFile_clicked" swapped="no"/> </object> <packing> <property name="expand">False</property> <property name="fill">True</property> <property name="position">1</property> </packing> </child> <child> <placeholder/> </child> <child> <placeholder/> </child> </object> </child> </object> </interface> My python code, based on this question, is this: #!/usr/bin/env python import gtk class NameApp: def __init__(self): filename = "project.glade" builder = gtk.Builder() builder.add_from_file(filename) builder.connect_signals(self) builder.get_object("mainWindow").show_all() def buttonWriteNameToFile_clicked(self, widget): print("File write code...") if __name__ == "__main__": app = NameApp() gtk.main() Running the file with python2 yields this error: name.py:9: Warning: cannot create instance of abstract (non-instantiatable) type `GtkBox' builder.add_from_file(filename) ./geany_run_script.sh: line 5: 14897 Segmentation fault python2 "name.py" I thought I followed that example as closely as possible, and I don't see any differences outside of the GTKBuilder file. However, the example in the linked question runs successfully on my machine. I don't know if it's relevant, but I'm running Arch Linux x86_64.

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  • how to match a regulas expresion like (%i1) in python pexpect

    - by mike
    I want to use maxima from python using pexpect, whenever maxima starts it will print a bunch of stuff of this form: $ maxima Maxima 5.27.0 http://maxima.sourceforge.net using Lisp SBCL 1.0.57-1.fc17 Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. The function bug_report() provides bug reporting information. (%i1) i would like to start up pexpect like so: import pexpect cmd = 'maxima' child = pexpect.spawn(cmd) child.expect (' match all that stuff up to and including (%i1)') child.sendline ('integrate(sin(x),x)') chil.expect( match (%o1 ) ) print child.before how do i match the starting banner up to the prompt (%i1)? and so on, also maxima increments the (%i1)'s by one as the session goes along, so the next expect would be: child.expect ('match (%i2)') child.sendline ('integrate(sin(x),x)') chil.expect( match (%o2 ) ) print child.before how do i match the (incrementing) integers?

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  • A general question about inheritence in the .NET framework

    - by Grant
    I have a general question about inheritance in the .NET framework, lets say you have 2 classes, the first is called Parent and the second is called Child. Child inherits from Parent. Parent wants to ensure that each instance of child executes a specific piece of code when it loads irrespective of whether the child has their own onLoad code explicitly specified. From my experience, if i handle onLoad in the parent and not in the child, the parents onLoad code will fire but if its handled in both classes only the child's code will fire. Is this correct? and if so how can i ensure the parents code will always fire for the child...

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  • Launch external application from C++ program and attach it to visual 2008 debugger while debugging host in WinAPI

    - by PiotrK
    Basically I have Host and Child program. I do not have sources for Child so I can't change anything in it. I want to launch Host from debugger, which at some point should launch Child program. I want to attach Child automatically for debugging session as well (so any breakpoints set in DLL sources loaded under Child process will hit). How to do this in Visual Studio 2008 C++ with standard WinAPI? I tried this: SHELLEXECUTEINFO sei = {0}; sei.cbSize = sizeof (SHELLEXECUTEINFO); sei.fMask = SEE_MASK_NOCLOSEPROCESS; sei.lpVerb = "open"; sei.lpFile = "Child.exe"; sei.lpParameters = "/Param"; sei.nShow = SW_SHOWNORMAL; if (ShellExecuteEx (&sei)) { WaitForSingleObject (sei.hProcess, INFINITE); } But this does not attach debugger for Child.exe

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  • Propagate properties to parent control C#

    - by Martin Ch
    Is there any way how to propagate properties from child control into parent - so I can access property like - Parent.Property1 instead of Parent.Child.Property1 ? I cant use inheritance - my parent cant be extended child type - its inherited from different class. Also I dont wanna add code for each property from child to parent like: public object Property1 { get{ return Child.Property1; } set{ ChildProperty1 = value; } } Maybe using reflection - something like this? public PropertyInfo[] Properties { get{ return Child.GetType().GetProperties(); } set{ Child.GetType().GetProperties().SetValue() = value.GetValue()} } Thanks

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  • How does the WP7 Pivot control dynamically load pivot items?

    - by mztan
    IIRC, the Pivot control only loads a child PivotItem if it is the currently shown child. I would then guess that the previously seen child is also somehow unloaded, presumably still stored in memory, but hidden from the UI. What I'm wondering is, how does the Pivot control dynamically load/unload a child control, and can that behavior be imitated within a custom UserControl? As for unloading, is it as simple as collapsing the previous child's visibility, or is something trickier going on? That is to say, supposing I use my own UserControl like: <my:CustomUserControl> <TextBlock x:Name="_textBlock" Text="wait for it ..." /> </my:CustomUserControl> Normally, the child TextBlock is instantiated when the surrounding PhoneApplicationPage is instantiated, via InitializeComponent and all that. Is there any way to postpone this behavior and load the child programmatically?

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  • Creating my first F# program in my new &ldquo;Expert F# Book&rdquo;

    - by MarkPearl
    So I have a brief hour or so that I can dedicate today to reading my F# book. It’s a public holiday and my wife’s birthday and I have a ton of assignments for UNISA that I need to complete – but I just had to try something in F#. So I read chapter 1 – pretty much an introduction to the rest of the book – it looks good so far. Then I get to chapter 2, called “Getting Started with F# and .NET”. Great, there is a code sample on the first page of the chapter. So I open up VS2010 and create a new F# console project and type in the code which was meant to analyze a string for duplicate words… #light let wordCount text = let words = Split [' '] text let wordset = Set.ofList words let nWords = words.Length let nDups = words.Length - wordSet.Count (nWords, nDups) let showWordCount text = let nWords,nDups = wordCount text printfn "--> %d words in text" nWords printfn "--> %d duplicate words" nDups   So… bad start - VS does not like the “Split” method. It gives me an error message “The value constructor ‘Split’ is not defined”. It also doesn’t like wordSet.Count telling me that the “namespace or module ‘wordSet’ is not defined”. ??? So a bit of googling and it turns out that there was a bit of shuffling of libraries between the CTP of F# and the Beta 2 of F#. To have access to the Split function you need to download the F# PowerPack and hen reference it in your code… I download and install the powerpack and then add the reference to FSharp.Core and FSharp.PowerPack in my project. Still no luck! Some more googling and I get the suggestions I got were something like this…#r "FSharp.PowerPack.dll";; #r "FSharp.PowerPack.Compatibility.dll";; So I add the code above to the top of my Program.fs file and still no joy… I now get an error message saying… Error    1    #r directives may only occur in F# script files (extensions .fsx or .fsscript). Either move this code to a script file, add a '-r' compiler option for this reference or delimit the directive with '#if INTERACTIVE'/'#endif'. So what does that mean? If I put the code straight into the F# interactive it works – but I want to be able to use it in a project. The C# equivalent I would think would be the “Using” keyword. The #r doesn’t seem like it should be in the FSharp code. So I try what the compiler suggests by doing the following…#if INTERACTIVE #r "FSharp.PowerPack.dll";; #r "FSharp.PowerPack.Compatibility.dll";; #endif No luck, the Split method is still not recognized. So wait a second, it mentioned something about FSharp.PowerPack.Compatibility.dll – I haven’t added this as a reference to my project so I add it and remove the two lines of #r code. Partial success – the Split method is now recognized and not underlined, but wordSet.Count is still not working. I look at my code again and it was a case error – the original wordset was mistyped comapred to the wordSet. Some case correction and the compiler is no longer complaining. So the code now seems to work… listed below…#light let wordCount text = let words = String.split [' '] text let wordSet = Set.ofList words let nWords = words.Length let nDups = words.Length - wordSet.Count (nWords, nDups) let showWordCount text = let nWords,nDups = wordCount text printfn "--> %d words in text" nWords printfn "--> %d duplicate words" nDups  So recap – if I wanted to use the interactive compiler then I need to put the #r code. In my mind this is the equivalent of me adding the the references to my project. If however I want to use the powerpack in a project – I just need to make sure that the correct references are there. I feel like a noob once again!

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  • Acceptance tests done first...how can this be accomplished?

    - by Crazy Eddie
    The basic gist of most Agile methods is that a feature is not "done" until it's been developed, tested, and in many cases released. This is supposed to happen in quick turnaround chunks of time such as "Sprints" in the Scrum process. A common part of Agile is also TDD, which states that tests are done first. My team works on a GUI program that does a lot of specific drawing and such. In order to provide tests, the testing team needs to be able to work with something that at least attempts to perform the things they are trying to test. We've found no way around this problem. I can very much see where they are coming from because if I was trying to write software that targeted some basically mysterious interface I'd have a very hard time. Although we have behavior fairly well specified, the exact process of interacting with various UI elements when it comes to automation seems to be too unique to a feature to allow testers to write automated scripts to drive something that does not exist. Even if we could, a lot of things end up turning up later as having been missing from the specification. One thing we considered doing was having the testers write test "scripts" that are more like a set of steps that must be performed, as described from a use-case perspective, so that they can be "automated" by a human being. This can then be performed by the developer(s) writing the feature and/or verified by someone else. When the testers later get an opportunity they automate the "script" for regression purposes mainly. This didn't end up catching on in the team though. The testing part of the team is actually falling behind us by quite a margin. This is one reason why the apparently extra time of developing a "script" for a human being to perform just did not happen....they're under a crunch to keep up with us developers. If we waited for them, we'd get nothing done. It's not their fault really, they're a bottle neck but they're doing what they should be and working as fast as possible. The process itself seems to be set up against them. Very often we end up having to go back a month or more in what we've done to fix bugs that the testers have finally gotten to checking. It's an ugly truth that I'd like to do something about. So what do other teams do to solve this fail cascade? How can we get testers ahead of us and how can we make it so that there's actually time for them to write tests for the features we do in a sprint without making us sit and twiddle our thumbs in the meantime? As it's currently going, in order to get a feature "done", using agile definitions, would be to have developers work for 1 week, then testers work the second week, and developers hopefully being able to fix all the bugs they come up with in the last couple days. That's just not going to happen, even if I agreed it was a reasonable solution. I need better ideas...

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  • What are the default groups assigned to the first user in Ubuntu Server?

    - by Wayne Koorts
    I just made a silly mistake on my Ubuntu Server box: I added myself to a group using usermod -G, after which I discovered the -a option... The result is that I am now out of the admin group, and lost my sudo rights. I can sort that out, but I want to know what other groups I may been removed from? My user was the first one so what I'm looking for is a list of groups that the first user gets added to at installation time.

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