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  • What do C# Table Adapters actually return?

    - by Raven Dreamer
    I'm working on an application that manipulates SQL tables in a windows form application. Up until now, I've only been using the pre-generated Fill queries, and self-made update and delete queries (which return nothing). I am interested in storing the value of a single value from a single column (an 'nchar(15)' name), and though I have easily written the SQL code to return that value to the application, I have no idea what it will be returned as. SELECT [Contact First Name] FROM ContactSkillSet WHERE [Contact ID] = @CurrentID Can the result be stored directly as a string? Do I need to cast it? Invoke a toString method?

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  • How to setup a mail server on Mac OS X 10.7.4?

    - by 0x90
    I am working in PHP and I have mamp on my machine. I would like to send emails from my PHP code, like this: <?php $to = "[email protected]"; $subject = "Hi!"; $body = "Hi,\n\nHow are you?"; if (mail($to, $subject, $body)) { echo("<p>Message successfully sent!</p>"); } else { echo("<p>Message delivery failed...</p>"); } ?> How can I configure a mail server for free on my machine?

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  • How to transfer large file (File size > Heap Size) over the network?

    - by neo
    How to transfer large file (File size Heap/RAM Size) over the network ? Lets say I have file (size 10GB) I want to transfer it machine a (RAM 512mb) to machine b (RAM 512mb). Want achieve this using java code. First, is it possible ? Any recommendation on framework. If possible, can we speed this up using threading ? Important criteria: file's data sequence needs to be maintained during transfer. Any example will be great help.

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  • Custom Global Hotkey Win32 C - Problem

    - by UK
    Hello , I am trying to get the user defined global hot key for my application. Here is my application code, user.rc CONTROL "", IDC_MHOTKEY, HOTKEY_CLASS, WS_TABSTOP, 91, 86, 68, 14 function.cpp WORD wHotKey = SendDlgItemMessage(hwnd, IDC_MHOTKEY, HKM_GETHOTKEY, 0, 0); GLOBAL_HOTKEY= wHotKey; RegisterHotKey ( NULL, TURN_OFF_HOTKEY, HIBYTE(LOWORD(wHotKey)) , wHotKey); main.cpp if ( messages.message == WM_HOTKEY && ( HIWORD ( messages.lParam ) == GLOBAL_HOTKEY) ) alert("Coming only for Single Key"); This code works well, Only If the user selects a single key and not working when he selects multiple key combined like CTRL+F8. I know I am doing something wrong here. Really appreciate If someone guide me in a right path.

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  • Service Discovery in J2ME

    - by thiagolee
    Hello, I have an application to run on a cell phone equipped with Wi-Fi and an application on a desktop which I want to communicate with. The problem is that I want to find in a Local Area Network the IP and port of the machine who has my service running. I can guarantee that there will be at maximum only one machine running it. I searched a lot for a way to do this but I ended up with nothing. I read something about WebServices, but it didn't seen to be what I wanted, what I want is really simple. I actually found a solution for it, but it can't be ported to J2ME. Anyone can help? Thanks.

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  • How to turn one server into many servers? (Virtualization/VMWare)

    - by user1229962
    I'm hoping for a high level discussion of this problem I know is quickly approaching my application. I have a server that binds on a specific port and manages TCP Sockets from my clients. I know that it is common practice to use VMWare to virtualize servers and run multiple servers at once. How can a single server design be changed to support multiple servers? Multiple servers can't bind to the same port. If I had to guess I would say a proxy server binds to the port and then sends connections off to the other servers to be handled as if it was still a single server application. I'm wondering what options there are and what are the common practices for solving this problem? Thanks in advance!

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  • Can I use GNU Screen completely transparently/automatically?

    - by dreeves
    Screen is amazing, of course, but I don't want to have to think about it. I often ssh to a machine, start doing a bunch of stuff, and then think "gosh, I wish I had thought to start a screen session before doing all that so I could reconnect to this from home later". I'd like to have screen automatically started whenever I log in to a machine. And when I get disconnected, I want to be able to immediately and simply reconnect without fussing with "screen -ls" and "screen -dr". I have a script that implements one solution to this problem which I'll post as an answer. I'm interested to see other approaches.

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  • How to edit files on the users file system from my web server?

    - by Abs
    Hello all, I am really looking for implementation advice as I have entered a new realm that I am not familiar with. At the simplest level, I would like to find a way that I can read/write to a users machine from my web server. For this to work, I think I will have to install some sort of "plugin" on the users machine which can receive (or poll?) the server for instructions. The above is the line of thought that I currently have, maybe using JAVA to do this. This needs to work on Linux, Mac and Windows OS. I am really looking for advice on the above, is it a good idea? Is there a better way of doing this? Is there something out there already that I can build on top of? I really appreciate all input and advice as this is something I have not done before. Thanks all

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  • Working with sets of rows in (My)SQL and comparing values

    - by Pep.
    Hello, I am trying to figure out the SQL for doing some relatively simple operations on sets of records in a table but I am stuck. Consider a table with multiple rows per item, all identified by a common key. For example: serial model color XX1 A blue XX2 A blue XX3 A green XX5 B red XX6 B blue XX1 B blue What I would for example want to do is: Assuming that all model A rows must have the same color, find the rows which dont. (for example, XX3 is green). Assuming that a given serial number can only point to a single type of model, find out the rows which that does not occur (for example XX1 points both to A and B) These are all simple logically things to do. To abstract it, I want to know how to group things by using a single key (or combination of keys) and then compare the values of those records. Should I use a join on the same table? should i use some sort of array or similar? thanks for your help

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  • Make network changes permanent - C++

    - by pparescasellas
    I need to allow an external client to change the IP of the Linux machine where the program is running (C++). I already know how to list all the local interfaces and the current IPs assigned to them. I also know how to programatically change said IPs. What I need to know is how to make this change permanent so, if the machine reboots, it keeps the same network configuration. What's the best way to do this? Manually parsing /etc/network/interfaces? Calling some linux command? Edit: I'm using Debian. Thanks!

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  • How do I specify both icons for a universal iPhone/iPad app?

    - by byamabe
    I hope to create a single app that supports both the iPhone and the iPad. The app works in the simulator for both devices as desired. Now I'm trying to build and deploy it. I set the "Icon File" in the plist to the 57x57 .png image and when I build and try to submit the app ItunesConnect complains about needing a 72x72 .png image for the iPad. If I specify the "Icon File" to the 72x72 .png ItunesConnect complains about needing a 57x57 image for the iPhone. How do I specify both icons in a single plist?

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  • Splitting a UL into three even lists

    - by Andy
    I am printing a menu using UL, the trouble is the order that is generated by my script is ignored because im printing the LI one after the other and they're spanning three across. So the order is 1 , 2 , 3 as opposed to 1 2 3 To counteract this i wanted to split my single UL into three that way the order would be maintained. Here is my code currently which works perfectly to print a single UL. //Category Drop Down Menu $this->CategoryDropDownMenu = '<ul id="subcatmenu">'; foreach($sitemap->CategoryMenu as $val) $this->CategoryDropDownMenu .= '<li><a href="'.$val[host].$val[link].'"><span>'.htmlspecialchars($val[title]).'</span></a></li>'; $this->CategoryDropDownMenu .= '</ul>';

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  • Cannot access data from hbase with amazone ec2

    - by Najeeb Thalakkatt
    I have a single node hadoop machine in which hbase is running in the amazone ec2 instance. Due to some reason the server got restarted. So i need to start hadoop and hbase again. Then its working fine, but the old data in the hbase cannot be accessed through the web-servies. While i use the shell command its working fine, i am getting the data. So i created the scenario on my local server machine, but its working fine. The version details are as follows. hadoop-0.20.2 hbase-0.90.5 apache-tomcat-7.0.30 in Amazon ec2 medium instance And i use restful web-services with Orm-hbase to access data.

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  • Python "string_escape" vs "unicode_escape"

    - by Mike Boers
    According to the docs, the builtin string encoding string_escape: Produce[s] a string that is suitable as string literal in Python source code ...while the unicode_escape: Produce[s] a string that is suitable as Unicode literal in Python source code So, they should have roughly the same behaviour. BUT, they appear to treat single quotes differently: >>> print """before '" \0 after""".encode('string-escape') before \'" \x00 after >>> print """before '" \0 after""".encode('unicode-escape') before '" \x00 after The string_escape escapes the single quote while the Unicode one does not. Is it safe to assume that I can simply: >>> escaped = my_string.encode('unicode-escape').replace("'", "\\'") ...and get the expected behaviour?

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  • Partially fattening a list

    - by alj
    This is probably a really silly question but, given the example code at the bottom, how would I get a single list that retain the tuples? (I've looked at the itertools but it flattens everything) What I currently get is: ('id', 20, 'integer') ('companyname', 50, 'text') [('focus', 30, 'text'), ('fiesta', 30, 'text'), ('mondeo', 30, 'text'), ('puma', 30, 'text')] ('contact', 50, 'text') ('email', 50, 'text') what I would like is a single level list like: ('id', 20, 'integer') ('companyname', 50, 'text') ('focus', 30, 'text') ('fiesta', 30, 'text') ('mondeo', 30, 'text') ('puma', 30, 'text') ('contact', 50, 'text') ('email', 50, 'text') def getproducts(): temp_list=[] product_list=['focus','fiesta','mondeo','puma'] #usually this would come from a db for p in product_list: temp_list.append((p,30,'text')) return temp_list def createlist(): column_title_list = ( ("id",20,"integer"), ("companyname",50,"text"), getproducts(), ("contact",50,"text"), ("email",50,"text"), ) return column_title_list for item in createlist(): print item Thanks ALJ

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  • Learn another useful programming language [closed]

    - by Sebi
    I know this question was here a lot of times and can't be answered at all, but im not looking for a single name, but rather for an advice in my situation. I learned programming with Java and now I'm developing in Java for more or less 5 years (at the university) and I thinks my programming skills their are really ok/average. I have also small experience in C/C++ and C#. Now I have some spare time and I'd like to learn a new language or deepen the knowledge of Java/C/C++. But how to choose the right language to learn? I'd like to learn a language which will be usefull in the future concerning working in a software development business? I know there is no single answer, but I'm sure you could mention some languages that are more usefull than others.

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  • Best neural network for certain type of pattern analysis?

    - by fred basset
    Hi All, I'm working on a system that will send telemetry data on machine operation back to a central server for analysis. One of the machine parameters we're measuring is motor current drawn vs time. After an operation is finished we plan to send back an array of currents vs time to the server. A successful operation would have a pattern like a trapezoid, problematic operations would have a pattern completely different, more like a large spike in values. Can anyone recommend a type of neural network that would be good at classifying these 1D vectors of current values into a pass/fail type output? Thanks, Fred

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  • Can I pass an array as arguments to a method with variable arguments in Java?

    - by user352382
    I'd like to be able to create a function like: class A { private String extraVar; public String myFormat(String format, Object ... args){ return String.format(format, extraVar, args); } } The problem here is that args is treated as Object[] in the method myFormat, and thus is a single argument to String.format, while I'd like every single Object in args to be passed as a new argument. Since String.format is also a method with variable arguments, this should be possible. If this is not possible, is there a method like String.format(String format, Object[] args)? In that case I could prepend extraVar to args using a new array and pass it to that method.

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  • Rails: updating an item along with associated items

    - by shmichael
    Suppose I have a simple to-do list application. The application contains two models: lists (have an owner and description) items (have name and due-date) that belong to a specific list I would like to have a single edit screen for a list in which I update the list attributes (such as description) and also create/delete/modify associated items. There should be a single "save" button that will commit all changes. Unless save is pressed, any change to the list and the items should be forgotten. I wasn't able to find an elegant best practice for this. Would greatly appreciate any suggestions and/or references to existing implementations.

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