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  • How do I average the difference between specific values in TSQL?

    - by jvenema
    Hey folks, sorry this is a bit of a longer question... I have a table with the following columns: [ChatID] [User] [LogID] [CreatedOn] [Text] What I need to find is the average response time for a given user id, to another specific user id. So, if my data looks like: [1] [john] [20] [1/1/11 3:00:00] [Hello] [1] [john] [21] [1/1/11 3:00:23] [Anyone there?] [1] [susan] [22] [1/1/11 3:00:43] [Hello!] [1] [susan] [23] [1/1/11 3:00:53] [What's up?] [1] [john] [24] [1/1/11 3:01:02] [Not much] [1] [susan] [25] [1/1/11 3:01:08] [Cool] ...then I need to see that Susan has an average response time of (20 + 6) / 2 = 13 seconds to John, and John has an average of (9 / 1) = 9 seconds to Susan. I'm not even sure this can be done in set-based logic, but if anyone has any ideas, they'd be much appreciated!

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  • How to have a function with a nullable string parameter in Go?

    - by yuku
    I'm used to Java's String where we can pass null rather than "" for special meanings, such as use a default value. In Go, string is a primitive type, so I cannot pass nil (null) to a parameter that requires a string. I could write the function using pointer type, like this: func f(s *string) so caller can call that function either as f(nil) or // not so elegant temp := "hello"; f(&temp) but the following is unfortunately not allowed: // elegant but disallowed f(&"hello"); What is the best way to have a parameter that receives either a string or nil?

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  • Change Toast Font

    - by mgpyone
    Currently, I'm trying to develop an app. and I don't know how to change the Toast font. . final OnClickListener clickListener = new OnClickListener() { public void onClick(View v) { try { Toast.makeText(nova.this,"Hello", 500000).show(); } catch (Exception e) { Toast.makeText(nova.this,"Exception:" +e, 500000); } } }; I want to change the text "Hello" with custom font I've tried with TypeFace. and Then, I want to set a variable at the place "TextClicked" .. I've tried with a local variable .. but it doesn't work any help with example source code will be really great for me.

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  • how to work with strings and integers as bit strings in python?

    - by Manuel
    Hello! I'm developing a Genetic Algorithm in python were chromosomes are composed of strings and integers. To apply the genetic operations, I want to convert these groups of integers and strings into bit strings. For example, if one chromosome is: ["Hello", 4, "anotherString"] I'd like it to become something like: 0100100100101001010011110011 (this is not actual translation). So... How can I do this? Chromosomes will contain the same amount of strings and integers, but this numbers can vary from one algorithm run to another. To be clear, what I want to obtain is the bit representation of each element in the chromosome concatenated. If you think this would not be the best way to apply genetic operators (such as mutation and simple crossover) just tell me! I'm open to new ideas. Thanks a lot! Manuel

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  • Problem with istringstream in C++

    - by helixed
    Hello, I'm sure I'm just doing something stupid here, but I can't quite figure out what it is. When I try to run this code: #include <iostream> #include <string> #include <sstream> using namespace std; int main(int argc, char *argv[]) { string s("hello"); istringstream input(s, istringstream::in); string s2; input >> s2; cout << s; } I get this error: malloc: *** error for object 0x100016200: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug The only thing I can think of is that I allocated s2 on the stack, but I thought strings manage their own content on the heap. Any help here would be appreciated. Thanks, helixed

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  • Javascript undefined variable

    - by djairo
    I have a problem with a javascript error: $("#slider") is undefined How can i solve this problem? <script type="text/javascript"> $(document).ready(function() { $("#slider").easySlider({ controlsBefore: '<p id="controls">', controlsAfter: '</p>', prevId: 'prevBtn', nextId: 'nextBtn' }); }); </script> This is my html <div id='slider'> <table> <tr> <td width='325'>hello</td> <td width='325'>hello</td> </table> </div>

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  • IFrame causing javascript code to not execute

    - by Claudio Redi
    Does anyone know why this code doesn't work. This means, the alert is NOT fired <iframe/> <script type="text/javascript">alert('hello');</script> While this code with the alert BEFORE the Iframe works perfeclty. This means the alert is fired <script type="text/javascript">alert('hello');</script> <iframe/> Seems that no javascript placed after the iframe is executed, I don't find any logic to this.

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  • how i got the name of the string variable in the strange attempt to debug unknown variable ?

    - by justjoe
    i got several variable. One is variable string, object, and array. $mystring = "hello im input"; $myobject = new userclass; $myarray = array ( 0 = 'zero', 1 = "one"); i want to create a new array with its variable name as key before send it to as function parameter with it's first line use extract function. the multi_array will be like this multi_array = array ( 'mystring' = "hello im input", 'myobject' = new userclass, 'myarray' = array ( 0 = 'zero', 1 = "one") ) i use key to get the name of array and getclass to get the name of object. But how i got the name of the string variable ? function i_do_extract($multi_array) { extract($multi_array); // Do Rest }

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  • First ASM program

    - by Tal
    Hello, I'm trying to run my first ASM 8086 program on MASM on Windows Vista 64bit OS. I put this program on my MASM editor: .model small .stack .data message db "Hello world, I'm learning Assembly !!!", "$" .code main proc mov ax,seg message mov ds,ax mov ah,09 lea dx,message int 21h mov ax,4c00h int 21h main endp end main and the MASM editor gives me this output that I got no idea what's wrong with the program: Assembling: D:\masm32\First.asm D:\masm32\First.asm(9) : error A2004: symbol type conflict D:\masm32\First.asm(19) : warning A4023: with /coff switch, leading underscore required for start address : main _ Assembly Error Where is the problem with this code? This is my first ASM program please remember. Thank you :)

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  • When does printf("%s", char*) stop printing?

    - by remagen
    In my class we are writing our own copy of C's malloc() function. To test my code (which can currently allocate space fine) I was using: char* ptr = my_malloc(6*sizeof(char)); memcpy(ptr, "Hello\n", 6*sizeof(char)); printf("%s", ptr); The output would typically be this: Hello Unprintable character Some debugging figured that my code wasn't causing this per say, as ptr's memory is as follows: [24 bytes of meta info][Number of requested bytes][Padding] So I figured that printf was reaching into the padding, which is just garbage. So I ran a test of: printf("%s", "test\nd"); and got: test d Which makes me wonder, when DOES printf("%s", char*) stop printing chars?

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  • Problem inserting JavaScript into a CKEditor Instance running inside a jQuery-UI Dialog Box

    - by PlasmaFlux
    Hello Overflowers! Here's what's going on: I'm building an app (using PHP, jQuery, etc), part of which lets users edit various bits of a web page (Header, Footer, Main Content, Sidebar) using CKEditor. It's set up so that each editable bit has an "Edit Content" button in the upper right that, on click, launches an instance of CKEditor inside a jQuery-UI Dialog box. After the user is done editing, they can click an 'Update Changes' button that passes the edited content back off to the main page and closes the Dialog/CKeditor. It's all working magnificently, save for one thing. If someone inserts any JavaScript code, wrapped in 'script' tags, using either the Insert HTML Plugin for CKEditor or by going to 'Source' in CKEditor and placing the code in the source, everything seems okay until they click the 'Update Changes' button. The JavaScript appears to be inserting properly, but when 'Update Changes' is clicked, instead of the Dialog closing and passing the script back into the div where it belongs, what I get instead is an all-white screen with just the output of the JavaScript. For example, a simple 'Hello World' script results in a white screen with the string 'Hello World' in the upper left corner; for more intricate scripts, like an API call to, say Aweber, that generates a newsletter signup form, I get an all-white screen with the resulting form from the Aweber API call perfectly rendered in the middle of the screen. One of the most confusing parts is that, on these pages, if I click 'View Source', I get absolutely nothing. Blank emptiness. Here's all my code that handles the launching of the CKEditor instance inside the jQuery-UI Dialog, and the passing of the edited data back into its associated div on click of the 'Update Changes' button: $(function() { $('.foobar_edit_button') .button() .click(function() { var beingEdited = $(this).nextAll('.foobar_editable').attr('id'); var content = $(this).nextAll('.foobar_editable').html(); $('#foobar_editor').html(content); $('#foobar_editor').dialog( { open:function() { $(this).ckeditor(function() { CKFinder.SetupCKEditor( this, '<?php echo '/foobar/lib/editor/ckfinder/'; ?>' ); }); }, close:function() { $(this).ckeditorGet().destroy(); }, autoOpen: false, width: 840, modal: true, buttons: { 'Update Changes': function() { // TODO: submit changes to server via ajax once its completed: for ( instance in CKEDITOR.instances ) CKEDITOR.instances[instance].updateElement(); var edited_content = $('#foobar_editor').html(); $('#' + beingEdited).html(edited_content); $(this).dialog('close'); } } }); $('#foobar_editor').dialog('open'); }); }); I'm all sorts of confused. If anyone can point me in the right direction, it will be greatly appreciated. Thanks!

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  • beginner's ruby question: how to use erb to output file after binding

    - by john
    Hi, I got the following example: require 'erb' names = [] names.push( { 'first' => "Jack", 'last' => "Herrington" } ) names.push( { 'first' => "LoriLi", 'last' => "Herrington" } ) names.push( { 'first' => "Megan", 'last' => "Herrington" } ) myname = "John Smith" File.open( ARGV[0] ) { |fh| erb = ERB.new( fh.read ) print erb.result( binding ) accompanied by text.txt <% name = "Jack" %> Hello <%= name %> <% names.each { |name| %> Hello <%= name[ 'first' ] %> <%= name[ 'last' ] %> <% } %> hi, my name is <%= myname %> } it prints nicely to screen. what is the simplest way to output another file: "text2.txt"? thank you!!!

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  • Delegate Instantiation -Clarification

    - by nettguy
    When i have delegate like public delegate void PrintMe(); (1) PrintMe a = delegate() { MessageBox.Show("Hello"); }; a(); (2) PrintMe b = () => { MessageBox.Show("Hello"); }; b(); (3) PrintMe c = new PrintMe(HelpMe); c(); static void HelpMe() { MessageBox.Show("Help Me"); } for (1) and (2) I did not instatntiate the delegate it is directly pointing to anonymous methods.But as in the case of (3) I need to instatntiate the delegate and pass the static method.for case (3) can't i declare like PrintMe c= HelpMe(); ?.How does (1) and (2) work?

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  • java source code doubt

    - by abson
    this compiles class ex1 { public int show() { try { int a=10/10; return 10;} catch(ArithmeticException e) { System.out.println(e); } finally { System.out.println("Finally");} System.out.println("hello"); return 20; } } on the other hand this doesn't class ex15 { public int show() { try { int a=10/0; return 10;} catch(ArithmeticException e) { System.out.println(e); } finally { System.out.println("Finally"); return 40;} System.out.println("hello"); return 20; } } why is it so?

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  • Namespace Autoload works under windows, but not on Linux

    - by EvilChookie
    I have the following php code: index.php <?php spl_autoload_extensions(".php"); spl_autoload_register(); use modules\standard as std; $handler = new std\handler(); $handler->delegate(); ?> modules\standard\handler.php <?php namespace modules\standard { class handler { function delegate(){ echo 'Hello from delegation!'; } } } ?> Under Windows 7, running WAMP, the code produces the message "Hello from Delegation!" however under Linux, I get the following: Fatal error: spl_autoload(): Class modules\standard\handler could not be loaded in /var/www/index.php on line 15 Windows is running PHP 5.3.0 under WAMP, and Linux is running the 5.3.2 dotdeb package under Ubuntu 9.10. Is this a configuration issue on my linux box, or just a difference in the way namespaces and autoloading is handled on the different operating systems

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  • Import Namespace System.Query

    - by GateKiller
    I am trying to load Linq on my .Net 3.5 enabled web server by adding the following to my .aspx page: <%@ Import Namespace="System.Query" %> However, this fails and tells me it cannot find the namespace. The type or namespace name 'Query' does not exist in the namespace 'System' I have also tried with no luck: System.Data.Linq System.Linq System.Xml.Linq I believe that .Net 3.5 is working because var hello = "Hello World" seems to work. Can anyone help please? Cheers, Stephen PS: I just want to clarify that I don't use Visual Studio, I simple have a Text Editor and write my code directly into .aspx files.

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  • problem in return value from server to client in ajax

    - by user1400
    hello i try to use ajax and zend framework in my application , i could pass variable to server but i can not get data from server , it does not return values, it return all html code page, where is my mistake? $('#myForm').submit(function($e){ $e.preventDefault(); var $paramToServer=$("#myForm").serialize(); $.ajax({ type:'POST', url:'test', data:$paramToServer , success:function(re){ var res = $.evalJSON(re); console.log(res.id); // to see in firebog }, dataType:'json' }); }); public function testAction() { $this->_helper->getHelper('viewRenderer')->setNoRender(); //disable layout Zend_Layout::getMvcInstance()->disableLayout(); $name=$this->getRequest()->getParam ( 'name' ); //pass $name to server $return = array( 'id' => '5', 'family' => 'hello ', ); $return = Zend_Json::encode( $return); // Response $this->getResponse()->setBody($return); }

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