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  • Visual Studio Conversion Suite

    - by KingPop
    I have this as my conversion program for the "Length", how can I do it the simpliest way instead of keeping the if, elseif, else too much, i do not have much experience and trying to improve my programming skills on visual studio 2008. Basically, I get annoyed with the formulas because I don't know if it is right, I use google but doesn't help because i don't know how to get it right when the program converts from type to type. Public Class Form2 Dim Metres As Integer Dim Centimetres As Integer Dim Inches As Integer Dim Feet As Integer Dim Total As Integer Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ErrorMsg.Hide() End Sub Private Sub btnConvert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvert.Click Metres = 1 Centimetres = 0.01 Inches = 0.0254 Feet = 0.3048 txtTo.Text = 0 If txtFrom.Text <> "" Then If IsNumeric(txtFrom.Text) And IsNumeric(txtTo.Text) Then If cbFrom.Text = "Metres" And cbTo.Text = "Centimetres" Then Total = txtFrom.Text * Metres txtTo.Text = Total ElseIf cbFrom.Text = "Metres" And cbTo.Text = "Inches" Then Total = txtFrom.Text * 100 txtTo.Text = Total ElseIf cbFrom.Text = "Metres" And cbTo.Text = "Feet" Then ElseIf cbFrom.Text = "Centimetres" And cbTo.Text = "Metres" Then ElseIf cbFrom.Text = "Centimetres" And cbTo.Text = "Inches" Then ElseIf cbFrom.Text = "Centimetres" And cbTo.Text = "Feet" Then ElseIf cbFrom.Text = "Inches" And cbTo.Text = "Metres" Then ElseIf cbFrom.Text = "Inches" And cbTo.Text = "Centimetres" Then ElseIf cbFrom.Text = "Inches" And cbTo.Text = "Feet" Then ElseIf cbFrom.Text = "Feet" And cbTo.Text = "Metres" Then ElseIf cbFrom.Text = "Feet" And cbTo.Text = "Centimetres" Then ElseIf cbFrom.Text = "Feet" And cbTo.Text = "Inches" Then End If End If End If End Sub End Class This is the source for what I have done at the moment.

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  • Query Months help

    - by StealthRT
    Hey all i am in need of some helpful tips/advice on how to go about my problem. I have a database that houses a "signup" table. The date for this table is formated as such: 2010-04-03 00:00:00 Now suppose i have 10 records in this database: 2010-04-03 00:00:00 2010-01-01 00:00:00 2010-06-22 00:00:00 2010-02-08 00:00:00 2010-02-05 00:00:00 2010-03-08 00:00:00 2010-09-29 00:00:00 2010-11-16 00:00:00 2010-04-09 00:00:00 2010-05-21 00:00:00 And i wanted to get each months total registers... so following the example above: Jan = 1 Feb = 2 Mar = 1 Apr = 2 May = 1 Jun = 1 Jul = 0 Aug = 0 Sep = 1 Oct = 0 Nov = 1 Dec = 0 Now how can i use a query to do that but not have to use a query like: WHERE left(date, 7) = '2010-01' and keep doing that 12 times? I would like it to be a single query call and just have it place the months visits into a array like so: do until EOF theMonthArray[0] = "total for jan" theMonthArray[1] = "total for feb" theMonthArray[2] = "total for mar" theMonthArray[3] = "total for apr" ...etc loop I just can not think of a way to do that other than the example i posted with the 12 query called-one for each month. This is my query as of right now. Again, this only populates for one month where i am trying to populate all 12 months all at once. SELECT count(idNumber) as numVisits, theAccount, signUpDate, theActive from userinfo WHERE theActive = 'YES' AND idNumber = '0203' AND theAccount = 'SUB' AND left(signUpDate, 7) = '2010-04' GROUP BY idNumber ORDER BY numVisits; The example query above outputs this: numVisits | theAccount | signUpDate | theActive 2 SUB 2010-04-16 00:00:00 YES Which is correct because i have 2 records within the month of April. But again, i am trying to do all 12 months at one time (in a single query) so i do not tax the database server as much when compared to doing 12 different query's... UPDATE I'm looking to do something like along these lines: if NOT rst.EOF if left(rst("signUpDate"), 7) = "2010-01" then theMonthArray[0] = rst("numVisits") end if if left(rst("signUpDate"), 7) = "2010-02" then theMonthArray[1] = rst("numVisits") end if etc etc.... end if Any help would be great! :) David

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  • Winforms: Embedded NumericUpDown control inside ListView

    - by tanthiamhuat
    say in my ListView say with 4 columns (Description, Price Per Unit, Quantity, Total Price). I would like to make the third column editable, and embedded NumericUpDown control for the Quantity column. Is it possible? And when the Quantity is updated via the NumericUpDown control, the Total Price is also being updated based on Total Price = Quantity * Price Per Unit. is the above achievable? any code samples would be greatly appreciated.

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  • IText can't keep rows together, second row spans multiple pages but won't stick with first row.

    - by J2SE31
    I am having trouble keeping my first and second rows of my main PDFPTable together using IText. My first row consists of a PDFPTable with some basic search criteria. My second row consists of a PdfPTable that contains all of the tabulated results. Everytime the tabulated results becomes too big and spans multiple pages, it is kicked to the second page automatically rather than showing up directly below the search criteria and then paging to the next page. How can I avoid this problem? I have tried using setSplitRows(false), but I simply get a blank document (see commented lines 117 and 170). How can I keep my tabulated data (second row) up on the first page? An example of my code is shown below (you should be able to just copy/paste). public class TestHelper{ private TestEventHelper helper; public TestHelper(){ super(); helper = new TestEventHelper(); } public TestEventHelper getHelper() { return helper; } public void setHelper(TestEventHelper helper) { this.helper = helper; } public static void main(String[] args){ TestHelper test = new TestHelper(); TestEventHelper helper = test.getHelper(); FileOutputStream file = null; Document document = null; PdfWriter writer = null; try { file = new FileOutputStream(new File("C://Documents and Settings//All Users//Desktop//pdffile2.pdf")); document = new Document(PageSize.A4.rotate(), 36, 36, 36, 36); writer = PdfWriter.getInstance(document, file); // writer.setPageEvent(templateHelper); writer.setPdfVersion(PdfWriter.PDF_VERSION_1_7); writer.setUserunit(1f); document.open(); List<Element> pages = null; try { pages = helper.createTemplate(); } catch (Exception e) { e.printStackTrace(); } Iterator<Element> iterator = pages.iterator(); while (iterator.hasNext()) { Element element = iterator.next(); if (element instanceof Phrase) { document.newPage(); } else { document.add(element); } } } catch (Exception de) { de.printStackTrace(); // log.debug("Exception " + de + " " + de.getMessage()); } finally { if (document != null) { document.close(); } if (writer != null) { writer.close(); } } System.out.println("Done!"); } private class TestEventHelper extends PdfPageEventHelper{ // The PdfTemplate that contains the total number of pages. protected PdfTemplate total; protected BaseFont helv; private static final float SMALL_MARGIN = 20f; private static final float MARGIN = 36f; private final Font font = new Font(Font.HELVETICA, 12, Font.BOLD); private final Font font2 = new Font(Font.HELVETICA, 10, Font.BOLD); private final Font smallFont = new Font(Font.HELVETICA, 10, Font.NORMAL); private String[] datatableHeaderFields = new String[]{"Header1", "Header2", "Header3", "Header4", "Header5", "Header6", "Header7", "Header8", "Header9"}; public TestEventHelper(){ super(); } public List<Element> createTemplate() throws Exception { List<Element> elementList = new ArrayList<Element>(); float[] tableWidths = new float[]{1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.25f, 1.25f, 1.25f, 1.25f}; // logger.debug("entering create reports template..."); PdfPTable splitTable = new PdfPTable(1); splitTable.setSplitRows(false); splitTable.setWidthPercentage(100f); PdfPTable pageTable = new PdfPTable(1); pageTable.setKeepTogether(true); pageTable.setWidthPercentage(100f); PdfPTable searchTable = generateSearchFields(); if(searchTable != null){ searchTable.setSpacingAfter(25f); } PdfPTable outlineTable = new PdfPTable(1); outlineTable.setKeepTogether(true); outlineTable.setWidthPercentage(100f); PdfPTable datatable = new PdfPTable(datatableHeaderFields.length); datatable.setKeepTogether(false); datatable.setWidths(tableWidths); generateDatatableHeader(datatable); for(int i = 0; i < 100; i++){ addCell(datatable, String.valueOf(i), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+1), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+2), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+3), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+4), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+5), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+6), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+7), 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, smallFont, true); addCell(datatable, String.valueOf(i+8), 1, Rectangle.NO_BORDER, Element.ALIGN_RIGHT, smallFont, true); } PdfPCell dataCell = new PdfPCell(datatable); dataCell.setBorder(Rectangle.BOX); outlineTable.addCell(dataCell); PdfPCell searchCell = new PdfPCell(searchTable); searchCell.setVerticalAlignment(Element.ALIGN_TOP); PdfPCell outlineCell = new PdfPCell(outlineTable); outlineCell.setVerticalAlignment(Element.ALIGN_TOP); addCell(pageTable, searchCell, 1, Rectangle.NO_BORDER, Element.ALIGN_LEFT, null, null); addCell(pageTable, outlineCell, 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, null, null); PdfPCell pageCell = new PdfPCell(pageTable); pageCell.setVerticalAlignment(Element.ALIGN_TOP); addCell(splitTable, pageCell, 1, Rectangle.NO_BORDER, Element.ALIGN_CENTER, null, null); elementList.add(pageTable); // elementList.add(splitTable); return elementList; } public void onOpenDocument(PdfWriter writer, Document document) { total = writer.getDirectContent().createTemplate(100, 100); total.setBoundingBox(new Rectangle(-20, -20, 100, 100)); try { helv = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED); } catch (Exception e) { throw new ExceptionConverter(e); } } public void onEndPage(PdfWriter writer, Document document) { //TODO } public void onCloseDocument(PdfWriter writer, Document document) { total.beginText(); total.setFontAndSize(helv, 10); total.setTextMatrix(0, 0); total.showText(String.valueOf(writer.getPageNumber() - 1)); total.endText(); } private PdfPTable generateSearchFields(){ PdfPTable searchTable = new PdfPTable(2); for(int i = 0; i < 6; i++){ addCell(searchTable, "Search Key" +i, 1, Rectangle.NO_BORDER, Element.ALIGN_RIGHT, font2, MARGIN, true); addCell(searchTable, "Search Value +i", 1, Rectangle.NO_BORDER, Element.ALIGN_LEFT, smallFont, null, true); } return searchTable; } private void generateDatatableHeader(PdfPTable datatable) { if (datatableHeaderFields != null && datatableHeaderFields.length != 0) { for (int i = 0; i < datatableHeaderFields.length; i++) { addCell(datatable, datatableHeaderFields[i], 1, Rectangle.BOX, Element.ALIGN_CENTER, font2); } } } private PdfPCell addCell(PdfPTable table, String cellContent, int colspan, int cellBorder, int horizontalAlignment, Font font) { return addCell(table, cellContent, colspan, cellBorder, horizontalAlignment, font, null, null); } private PdfPCell addCell(PdfPTable table, String cellContent, int colspan, int cellBorder, int horizontalAlignment, Font font, Boolean noWrap) { return addCell(table, cellContent, colspan, cellBorder, horizontalAlignment, font, null, noWrap); } private PdfPCell addCell(PdfPTable table, String cellContent, Integer colspan, Integer cellBorder, Integer horizontalAlignment, Font font, Float paddingLeft, Boolean noWrap) { PdfPCell cell = new PdfPCell(new Phrase(cellContent, font)); return addCell(table, cell, colspan, cellBorder, horizontalAlignment, paddingLeft, noWrap); } private PdfPCell addCell(PdfPTable table, PdfPCell cell, int colspan, int cellBorder, int horizontalAlignment, Float paddingLeft, Boolean noWrap) { cell.setColspan(colspan); cell.setBorder(cellBorder); cell.setHorizontalAlignment(horizontalAlignment); if(paddingLeft != null){ cell.setPaddingLeft(paddingLeft); } if(noWrap != null){ cell.setNoWrap(noWrap); } table.addCell(cell); return cell; } } }

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  • what is jqgrid footer json format

    - by Dennis
    hi. i am currently trying to solve my problem with the total in the footer. i tried searching in the internet with some examples, but they are using php, and i am using java. can you please show me what exactly the json looks like for this php script $response-userdata['total'] = 1234; $response-userdata['name'] = 'Totals:'; is this what it looks like? {"total":0,"userdata":[{"total":1234,"name":"Totals"}],"page":0,"aData":..... thanks.

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  • using nested arrays by php http_build_query() and recieve them in flash AS3

    - by Mahmoud
    hi, i am having this hard time figuring what is needed to do, i am using URLVariables to send/recieve values between flash and PHP the problem is, i am unable to access nested arrays ( array inside an array ) with flash heres an example: $dgresult = array("total" = $results); echo http_build_query($dgresult,"flf_"); in flash, all i need to do is to use: var variables:URLVariables = new URLVariables(e.target.data); then i can access it with : variables.total the problem now is when i have nested arrays: $dgresult = array("total" = $results); array_push($dgresult,$another_array); http_build_query($dgresult,"flf_"); i can still access variables.total but what about anything that has flf_ ? how is that possible?

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  • Need to add totals of select list, and subtract if taken away

    - by jeremy
    This is the code I am using to calculate the sum of two values (example below) http://www.healthybrighton.co.uk/wse/node/1841 This works to a degree. It will add the two together but only if #edit-submitted-test is selected first, and even then it will show NaN until I select #edit-submitted-test-1. I want it to calculate the sum of the fields and show the amount live, i.e. the value of edit-submitted-test-1 will show 500, then if i select another field it will update to 1000. If i take one selection away it will then subtract it and will be back to 500. Any ideas would be helpful thanks! Drupal.behaviors.bookingForm = function (context) { // some debugging here, remove when you're finished console.log('[bookingForm] started.'); // get number of travelers and multiply it by 100 function recalculateTotal() { var count = $('#edit-submitted-test').val(); count = parseFloat( count ); var cost = $('#edit-submitted-test-1').val(); cost = parseFloat( cost ); $('#edit-submitted-total').val( count + cost ); } // run recalculateTotal every time user enters a new value var fieldCount = $('#edit-submitted-test'); var fieldCount = $('#edit-submitted-test-1'); fieldCount.change( recalculateTotal ); // etc ... }; EDIT This is all working beautiful, however I now want to add all the values together, and automatically update a total cost field that is the sum of a the added field with code above and field with value passed from previous page. I did this where accomcost is the field that is added together, but the total cost field does update, but not automatically, it is always one selection behind. i.e. If i select options and accomodation cost updates to £900, total cost remains empty. If i then change the selection and the accomodation updates to £300, the total cost updates to the previous selection of £900. Any help on this one Felix? ;) thanks. var accomcost = $('#edit-submitted-accomodation-cost').val(); accomcost = accomcost ? parseFloat(accomcost) : 0; var coursescost = $('#edit-submitted-courses-cost-2').val(); coursescost = coursescost ? parseFloat(coursescost) : 0; $('#edit-submitted-accomodation-cost').val( w1 + w2 + w3 + w4 + w5 + w6 + w7 + w8 + w9 + w10 + w11 + w12 + w13 + w14 + w15 + w16 + w17 + w18 + w19 + w20 + w21 + w22 + w23 + w24 + w25 + w26 + w27 + w28 + w29 + w30 ); $('#edit-submitted-total-cost').val( accomcost + coursescost ); var fieldCount = $('#edit-submitted-accomodation-cost, #edit-submitted-courses-cost-2') .change( recalculateTotal );

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  • Database Design Question regaurding duplicate information.

    - by galford13x
    I have a database that contains a history of product sales. For example the following table CREATE TABLE SalesHistoryTable ( OrderID, // Order Number Unique to all orders ProductID, // Product ID can be used as a Key to look up product info in another table Price, // Price of the product per unit at the time of the order Quantity, // quantity of the product for the order Total, // total cost of the order for the product. (Price * Quantity) Date, // Date of the order StoreID, // The store that created the Order PRIMARY KEY(OrderID)); The table will eventually have millions of transactions. From this, profiles can be created for products in different geographical regions (based on the StoreID). Creating these profiles can be very time consuming as a database query. For example. SELECT ProductID, StoreID, SUM(Total) AS Total, SUM(Quantity) QTY, SUM(Total)/SUM(Quantity) AS AvgPrice FROM SalesHistoryTable GROUP BY ProductID, StoreID; The above query could be used to get the Information based on products for any particular store. You could then determine which store has sold the most, has made the most money, and on average sells for the most/least. This would be very costly to use as a normal query run anytime. What are some design descisions in order to allow these types of queries to run faster assuming storage size isn’t an issue. For example, I could create another Table with duplicate information. Store ID (Key), Product ID, TotalCost, QTY, AvgPrice And provide a trigger so that when a new order is received, the entry for that store is updated in a new table. The cost for the update is almost nothing. What should be considered when given the above scenario?

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  • nginx+php-fpm help optimize configs

    - by Dmitro
    I have 3 servers. First server (CPU - model name: 06/17, 2.66GHz, 4 cores, 8GB RAM) have nginx as load balancer with next config upstream lb_mydomain { server mydomain.ru:81 weight=2; server 66.0.0.18 weight=6; } server { listen 80; server_name ~(?!mydomain.ru)(.*); client_max_body_size 20m; location / { proxy_pass http://lb_mydomain; proxy_redirect off; proxy_set_header Connection close; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass_header Set-Cookie; proxy_pass_header P3P; proxy_pass_header Content-Type; proxy_pass_header Content-Disposition; proxy_pass_header Content-Length; } } And configs from nginx.conf: user www-data; worker_processes 5; # worker_priority -1; error_log /var/log/nginx/error.log; pid /var/run/nginx.pid; events { worker_connections 5024; # multi_accept on; } http { include /etc/nginx/mime.types; access_log /var/log/nginx/access.log; sendfile on; default_type application/octet-stream; #tcp_nopush on; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_disable "MSIE [1-6]\.(?!.*SV1)"; # PHP-FPM (backend) upstream php-fpm { server 127.0.0.1:9000; } include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } And config php-fpm: listen = 127.0.0.1:9000 ;listen.backlog = -1 ;listen.allowed_clients = 127.0.0.1 ;listen.owner = www-data ;listen.group = www-data ;listen.mode = 0666 user = www-data group = www-data pm = dynamic pm.max_children = 80 ;pm.start_servers = 20 pm.min_spare_servers = 5 pm.max_spare_servers = 35 ;pm.max_requests = 500 pm.status_path = /status ping.path = /ping ;ping.response = pong request_terminate_timeout = 30s request_slowlog_timeout = 10s slowlog = /var/log/php-fpm.log.slow ;rlimit_files = 1024 ;rlimit_core = 0 ;chroot = chdir = /var/www ;catch_workers_output = yes ;env[HOSTNAME] = $HOSTNAME ;env[PATH] = /usr/local/bin:/usr/bin:/bin ;env[TMP] = /tmp ;env[TMPDIR] = /tmp ;env[TEMP] = /tmp ;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f [email protected] ;php_flag[display_errors] = off ;php_admin_value[error_log] = /var/log/fpm-php.www.log ;php_admin_flag[log_errors] = on ;php_admin_value[memory_limit] = 32M In top I see 20 php-fpm processes which use from 1% - 15% CPU. So it's have high load averadge: top - 15:36:22 up 34 days, 20:54, 1 user, load average: 5.98, 7.75, 8.78 Tasks: 218 total, 1 running, 217 sleeping, 0 stopped, 0 zombie Cpu(s): 34.1%us, 3.2%sy, 0.0%ni, 37.0%id, 24.8%wa, 0.0%hi, 0.9%si, 0.0%st Mem: 8183228k total, 7538584k used, 644644k free, 351136k buffers Swap: 9936892k total, 14636k used, 9922256k free, 990540k cached Second server(CPU - model name: Intel(R) Xeon(R) CPU E5504 @ 2.00GHz, 8 cores, 8GB RAM). Nginx configs from nginx.conf: user www-data; worker_processes 5; # worker_priority -1; error_log /var/log/nginx/error.log; pid /var/run/nginx.pid; events { worker_connections 5024; # multi_accept on; } http { include /etc/nginx/mime.types; access_log /var/log/nginx/access.log; sendfile on; default_type application/octet-stream; #tcp_nopush on; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_disable "MSIE [1-6]\.(?!.*SV1)"; # PHP-FPM (backend) upstream php-fpm { server 127.0.0.1:9000; } include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } And config of php-fpm: listen = 127.0.0.1:9000 ;listen.backlog = -1 ;listen.allowed_clients = 127.0.0.1 ;listen.owner = www-data ;listen.group = www-data ;listen.mode = 0666 user = www-data group = www-data pm = dynamic pm.max_children = 50 ;pm.start_servers = 20 pm.min_spare_servers = 5 pm.max_spare_servers = 35 ;pm.max_requests = 500 ;pm.status_path = /status ;ping.path = /ping ;ping.response = pong ;request_terminate_timeout = 0 ;request_slowlog_timeout = 0 ;slowlog = /var/log/php-fpm.log.slow ;rlimit_files = 1024 ;rlimit_core = 0 ;chroot = chdir = /var/www ;catch_workers_output = yes ;env[HOSTNAME] = $HOSTNAME ;env[PATH] = /usr/local/bin:/usr/bin:/bin ;env[TMP] = /tmp ;env[TMPDIR] = /tmp ;env[TEMP] = /tmp ;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f [email protected] ;php_flag[display_errors] = off ;php_admin_value[error_log] = /var/log/fpm-php.www.log ;php_admin_flag[log_errors] = on ;php_admin_value[memory_limit] = 32M In top I see 50 php-fpm processes which use from 10% - 25% CPU. So it's have high load averadge: top - 15:53:05 up 33 days, 1:15, 1 user, load average: 41.35, 40.28, 39.61 Tasks: 239 total, 40 running, 199 sleeping, 0 stopped, 0 zombie Cpu(s): 96.5%us, 3.1%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.4%si, 0.0%st Mem: 8185560k total, 7804224k used, 381336k free, 161648k buffers Swap: 19802108k total, 16k used, 19802092k free, 5068112k cached Third server is server with database postgresql. Also i try ab -n 50 -c 5 http://www.mydomain.ru/ And I get next info: Complete requests: 50 Failed requests: 48 (Connect: 0, Receive: 0, Length: 48, Exceptions: 0) Write errors: 0 Total transferred: 9271367 bytes HTML transferred: 9247767 bytes Requests per second: 1.02 [#/sec] (mean) Time per request: 4882.427 [ms] (mean) Time per request: 976.486 [ms] (mean, across all concurrent requests) Transfer rate: 185.44 [Kbytes/sec] received Please advise how can I make lower level of load average?

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  • Django QuerySet filter + order_by + limit

    - by handsofaten
    So I have a Django app that processes test results, and I'm trying to find the median score for a certain assessment. I would think that this would work: e = Exam.objects.all() total = e.count() median = int(round(total / 2)) median_exam = Exam.objects.filter(assessment=assessment.id).order_by('score')[median:1] median_score = median_exam.score But it always returns an empty list. I can get the result I want with this: e = Exam.objects.all() total = e.count() median = int(round(total / 2)) exams = Exam.objects.filter(assessment=assessment.id).order_by('score') median_score = median_exam[median].score I would just prefer not to have to query the entire set of exams. I thought about just writing a raw MySQL query that looks something like: SELECT score FROM assess_exam WHERE assessment_id = 5 ORDER BY score LIMIT 690,1 But if possible, I'd like to stay within Django's ORM. Mostly, it's just bothering me that I can't seem to use order_by with a filter and a limit. Any ideas?

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  • Python script, runs well, but not perfectly, debugging help.

    - by S1syphus
    What it does (sort of)... or is meant to, the script reads from a csv file that contains information on sound files and create a play list exactly 60 minutes long. An example csv, contains: their title, duration (in seconds), minium total time to be played (in minutes) An example is: Soundfoo,120,10 Soundbar,30,6 Sounddev,60,20 Soundrandom,15,8 The script works out the minimum instances of plays, take 'Soundfoo' for example, the length of each sample is 120 seconds and the minimum time to be played is 10 minutes, so basic maths 10*60/120 gives the number of instances the song is to be played, in this case 5. It is meant to take minimum number of instances and spread out equally from each other; so there will never be a period where for example Soundbar is played twice in a row. Then if the minium instances of each song has been used, and there is still time with in the 60 min, how is it possible to tell it to go back and fill the time by selecting each sound and including it till the 60 min is filled while remaining sparsely populated. Heres the issue(s)! The script fails to calculate the actual time require to play all the sounds in a file and the total time of the playlist, the thing is tho it doesn't get it wrong all the time maybe 3/5 times, even if I run it on the same csv file it will give me different answers. Here is the file I shall run the script on e for sake of ease to see the issue: Sound1,60,10 Sound2,60,10 Sound3,60,10 Sound4,60,10 Sound5,60,10 Sound6,60,10 I'll do it three times and post the results: 1 Required playtime in minutes: 60 Actual time in minutes to play all required ads: 62 Total playtime in minutes: 62.0 2 Required playtime in minutes: 60 Actual time in minutes to play all required ads: 71 Total playtime in minutes: 71.0 3 Required playtime in minutes: 60 Actual time in minutes to play all required ads: 60 Total playtime in minutes: 60.0 Relevant Code: pastebin.com/demkBXk6 And finally... in context: http://pastebin.com/demkBXk6 If you made it down to here, thanks for staying and reading, kudos.

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  • loops and array help

    - by dalton
    public void arrayCalculation(int[][]scores,float[]averages, int[]temp) { int total; for(int a=0; a<5; a++) { for (int b=0; b<5; b++) { scores[a][b] = temp[a+b*5]; } } for(int a = 0; a <5; a++) { total = total + scores[a]; } scores[5][0] = total; } i need to add up the values stored in the first row and store it in the 6th positon in the row

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  • How can I graph the Lines of Code history for git repo?

    - by dbr
    Basically I want to get the number of lines-of-code in the repository after each commit. The only (really crappy) ways I have found is to use git filter-branch to run "wc -l *", and a script that run git reset --hard on each commit, then ran wc -l To make it a bit clearer, when the tool is run, it would output the lines of code of the very first commit, then the second and so on.. This is what I want the tool to output (as an example): me@something:~/$ gitsloc --branch master 10 48 153 450 1734 1542 I've played around with the ruby 'git' library, but the closest I found was using the .lines() method on a diff, which seems like it should give the added lines (but does not.. it returns 0 when you delete lines for example) require 'rubygems' require 'git' total = 0 g = Git.open(working_dir = '/Users/dbr/Desktop/code_projects/tvdb_api') last = nil g.log.each do |cur| diff = g.diff(last, cur) total = total + diff.lines puts total last = cur end

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  • How to get accuracy memory usage on iphone device.

    - by Favo Yang
    I want to output accuracy memory usage on iphone device, the method I used was taking from, http://landonf.bikemonkey.org/code/iphone/Determining%5FAvailable%5FMemory.20081203.html natural_t mem_used = (vm_stat.active_count + vm_stat.inactive_count + vm_stat.wire_count) * pagesize; natural_t mem_free = vm_stat.free_count * pagesize; natural_t mem_total = mem_used + mem_free; The issue is that the total value is always changed after testing on device! used: 60200.0KB free: 2740.0KB total: 62940.0KB used: 53156.0KB free: 2524.0KB total: 55680.0KB used: 52500.0KB free: 2544.0KB total: 55044.0KB Have a look for the function implementation, it already sum active, inactive, wire and free pages, is there anything I missing here?

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  • Recursion with an Array; can't get the right value to return

    - by Matt
    Recursive Solution: Not working! Explanation: An integer, time, is passed into the function. It's then used to provide an end to the FOR statement (counter<time). The IF section (time == 0) provides a base case where the recursion should terminate, returning 0. The ELSE section is where the recursive call occurs: total is a private variable defined in the header file, elsewhere. It's initialized to 0 in a constructor, elsewhere. The function calls itself, recursively, adding productsAndSales[time-1][0] to total, again, and again, until the base call. Then the total is returned, and printed out later. Well, that's what I hoped for anyway. What I imagined would happen is that I would add up all the values in this one column of the array and the value would get returned, and printed out. Instead if returns 0. If I set the IF section to "return 1", I noticed that it returns powers of 2, for whatever value time is. EG: Time = 3, it returns 2*2 + 1. If time = 5, it returns 2*2*2*2 + 1. I don't understand why it's not returning the value I'm expecting. int CompanySales::calcTotals( int time ) { cout << setw( 4 ); if ( time == 0 ) { return 0; } else { return total += calcTotals( productsAndSales[ time-1 ][ 0 ]); } } Iterative Solution: Working! Explanation: An integer, time, is passed into the function. It's then used to provide an end to the FOR statement (counter<time). The FOR statement cycles through an array, adding all of the values in one column together. The value is then returned (and elsewhere in the program, printed out). Works perfectly. int CompanySales::calcTotals( int time ) { int total = 0; cout << setw( 4 ); for ( int counter = 0; counter < time; counter++ ) { total += productsAndSales[counter][0]; } return total0; }

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  • what is the jqgrid footer json format

    - by Dennis
    hi. i am currently trying to solve my problem with the total in the footer. i tried searching in the internet with some examples, but they are using php, and i am using java. can you please show me what exactly the json looks like for this php script $response-userdata['total'] = 1234; $response-userdata['name'] = 'Totals:'; is this what it looks like? {"total":0,"userdata":[{"total":1234,"name":"Totals"}],"page":0,"aData":..... thanks.

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  • Toottip data issue in jquery flot

    - by Muhammad
    I am using Jquery plot.Every thing is working except tooltip data. Total data shown on a line is 190 which is equal to total published PLUS total unpublished.Total Published is 51 which is shown in tooltip.Now the other portion of tooltip shows 190 instead of 190-51 = 139 here is my code var options1 = { series: {stack: stack, lines: { show: lines, fill: false, steps: steps }, bars: { show: bars, barWidth: 0.4 }, points: { show: true} }, grid: { hoverable: true //IMPORTANT! this is needed for tooltip to work }, tooltip: true, tooltipOpts: { content: "%s : %y", shifts: { x: -60, y: 25 } }, legend:{'position':'ne','show':true,'margin':[-3, -20],'backgroundOpacity':0.1, 'noColumns': 4, 'container': null}, xaxis: {ticks: dest4 ,}, }; what i should do with this line to show exact data content: "%s : %y",

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  • Can I use @table variable in SQL Server Report Builder?

    - by edosoft
    Using MS SQL 2008 Reporting services: I'm trying to write a report that displays some correlated data so I thought to use a @table variable like so DECLARE @Results TABLE (Number int, Name nvarchar(250), Total1 money, Total2 money) insert into @Results(Number, Name, Total1) select number, name, sum(total) from table1 group by number, name update @Results set total2 = total from (select number, sum(total) from table2) s where s.number = number select from @results However, Report Builder keeps asking to enter a value for the variable @Results. It this at all possible?

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  • adjusting table content with javascript by enumerating rows

    - by Tom
    I have a table row with 4 columns on my ecommerce site and I want to replace the content of 1st column if total amount in last column (TD class "total") is over 10 EUR. How can I do this with javascript only, I guess somehow to enumerate through the table rows and look for a correct row (one with the last column class as total) and then access the content of 1st column on this row but how?

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  • Randomized experiments in R

    - by gd047
    Here is a simple randomized experiment. In the following code I calculate the p-value under the null hypothesis that two different fertilizers applied to tomato plants have no effect in plants yields. The first random sample (x) comes from plants where a standard fertilizer has been used, while an "improved" one has been used in the plants where the second sample (y) comes from. x <- c(11.4,25.3,29.9,16.5,21.1) y <- c(23.7,26.6,28.5,14.2,17.9,24.3) total <- c(x,y) first <- combn(total,length(x)) second <- apply(first,2,function(x) total[!total %in% x]) dif.treat <- apply(second,2,mean) - apply(first,2,mean) # the first element of dif.treat is the one that I'm interested in (p.value <- length(dif.treat[dif.treat >= dif.treat[1]]) / length(dif.treat)) Do you know of any R function that performs tests like this one?

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  • BigDecimal, division & MathContext - very strange behaviour

    - by blackliteon
    CentOs 5.4, OpenJDK Runtime Environment (build 1.6.0-b09) MathContext context = new MathContext(2, RoundingMode.FLOOR); BigDecimal total = new BigDecimal("200.0", context); BigDecimal goodPrice = total.divide(BigDecimal.valueOf(3), 2, RoundingMode.FLOOR); System.out.println("divided price=" + goodPrice.toPlainString()); // prints 66.66 BigDecimal goodPrice2 = total.divide(BigDecimal.valueOf(3), new MathContext(2, RoundingMode.FLOOR)); System.out.println("divided price2=" + goodPrice2.toPlainString()); // prints 66 BUG ?

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  • Choosing a type for search results in C#

    - by Chris M
    I have a result set that will never exceed 500; the results that come back from the web-service are assigned to a search results object. The data from the webservice is about 2mb; the bit I want to use is about a third of each record, so this allows me to cache and quickly manipulate it. I want to be able to sort and filter the results with the least amount of overhead and as fast as possible so I used the VCSKICKS timing class to measure their performance Average Total (10,000) Type Create Sort Create Sort HashSet 0.1579 0.0003 1579 3 IList 0.0633 0.0002 633 2 IQueryable 0.0072 0.0432 72 432 Measured in Seconds using http://www.vcskicks.com/algorithm-performance.php I created the hashset through a for loop over the web-service response (adding to the hashset). The List & IQueryable were created using LINQ. Question I can understand why HashSet takes longer to create (the foreach loop vs linq); but why would IQueryable take longer to sort than the other two; and finally is there a better way to assign the HashSet. Thanks Actual Program public class Program { private static AuthenticationHeader _authHeader; private static OPSoapClient _opSession; private static AccommodationSearchResponse _searchResults; private static HashSet<SearchResults> _myHash; private static IList<SearchResults> _myList; private static IQueryable<SearchResults> _myIQuery; static void Main(string[] args) { #region Setup WebService _authHeader = new AuthenticationHeader { UserName = "xx", Password = "xx" }; _opSession = new OPSoapClient(); #region Setup Search Results _searchResults = _opgSession.SearchCR(_authHeader, "ENG", "GBP", "GBR"); #endregion Setup Search Results #endregion Setup WebService // HASHSET SpeedTester hashTest = new SpeedTester(TestHashSet); hashTest.RunTest(); Console.WriteLine("- Hash Test \nAverage Running Time: {0}; Total Time: {1}", hashTest.AverageRunningTime, hashTest.TotalRunningTime); SpeedTester hashSortTest = new SpeedTester(TestSortingHashSet); hashSortTest.RunTest(); Console.WriteLine("- Hash Sort Test \nAverage Running Time: {0}; Total Time: {1}", hashSortTest.AverageRunningTime, hashSortTest.TotalRunningTime); // ILIST SpeedTester listTest = new SpeedTester(TestList); listTest.RunTest(); Console.WriteLine("- List Test \nAverage Running Time: {0}; Total Time: {1}", listTest.AverageRunningTime, listTest.TotalRunningTime); SpeedTester listSortTest = new SpeedTester(TestSortingList); listSortTest.RunTest(); Console.WriteLine("- List Sort Test \nAverage Running Time: {0}; Total Time: {1}", listSortTest.AverageRunningTime, listSortTest.TotalRunningTime); // IQUERIABLE SpeedTester iqueryTest = new SpeedTester(TestIQueriable); iqueryTest.RunTest(); Console.WriteLine("- iquery Test \nAverage Running Time: {0}; Total Time: {1}", iqueryTest.AverageRunningTime, iqueryTest.TotalRunningTime); SpeedTester iquerySortTest = new SpeedTester(TestSortableIQueriable); iquerySortTest.RunTest(); Console.WriteLine("- iquery Sort Test \nAverage Running Time: {0}; Total Time: {1}", iquerySortTest.AverageRunningTime, iquerySortTest.TotalRunningTime); } static void TestHashSet() { var test = _searchResults.Items; _myHash = new HashSet<SearchResults>(); foreach(var x in test) { _myHash.Add(new SearchResults { Ref = x.Ref, Price = x.StandardPrice }); } } static void TestSortingHashSet() { var sorted = _myHash.OrderBy(s => s.Price); } static void TestList() { var test = _searchResults.Items; _myList = (from x in test select new SearchResults { Ref = x.Ref, Price = x.StandardPrice }).ToList(); } static void TestSortingList() { var sorted = _myList.OrderBy(s => s.Price); } static void TestIQueriable() { var test = _searchResults.Items; _myIQuery = (from x in test select new SearchResults { Ref = x.Ref, Price = x.StandardPrice }).AsQueryable(); } static void TestSortableIQueriable() { var sorted = _myIQuery.OrderBy(s => s.Price); } }

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  • How do I get jqGrid to work using ASP.NET + JSON on the backend?

    - by briandus
    Hi friends, ok, I'm back. I totally simplified my problem to just three simple fields and I'm still stuck on the same line using the addJSONData method. I've been stuck on this for days and no matter how I rework the ajax call, the json string, blah blah blah...I can NOT get this to work! I can't even get it to work as a function when adding one row of data manually. Can anyone PLEASE post a working sample of jqGrid that works with ASP.NET and JSON? Would you please include 2-3 fields (string, integer and date preferably?) I would be happy to see a working sample of jqGrid and just the manual addition of a JSON object using the addJSONData method. Thanks SO MUCH!! If I ever get this working, I will post a full code sample for all the other posting for help from ASP.NET, JSON users stuck on this as well. Again. THANKS!! tbl.addJSONData(objGridData); //err: tbl.addJSONData is not a function!! Here is what Firebug is showing when I receive this message: • objGridData Object total=1 page=1 records=5 rows=[5] ? Page "1" Records "5" Total "1" Rows [Object ID=1 PartnerID=BCN, Object ID=2 PartnerID=BCN, Object ID=3 PartnerID=BCN, 2 more... 0=Object 1=Object 2=Object 3=Object 4=Object] (index) 0 (prop) ID (value) 1 (prop) PartnerID (value) "BCN" (prop) DateTimeInserted (value) Thu May 29 2008 12:08:45 GMT-0700 (Pacific Daylight Time) * There are three more rows Here is the value of the variable tbl (value) 'Table.scroll' <TABLE cellspacing="0" cellpadding="0" border="0" style="width: 245px;" class="scroll grid_htable"><THEAD><TR><TH class="grid_sort grid_resize" style="width: 55px;"><SPAN> </SPAN><DIV id="jqgh_ID" style="cursor: pointer;">ID <IMG src="http://localhost/DNN5/js/jQuery/jqGrid-3.4.3/themes/sand/images/sort_desc.gif"/></DIV></TH><TH class="grid_resize" style="width: 90px;"><SPAN> </SPAN><DIV id="jqgh_PartnerID" style="cursor: pointer;">PartnerID </DIV></TH><TH class="grid_resize" style="width: 100px;"><SPAN> </SPAN><DIV id="jqgh_DateTimeInserted" style="cursor: pointer;">DateTimeInserted </DIV></TH></TR></THEAD></TABLE> Here is the complete function: $('table.scroll').jqGrid({ datatype: function(postdata) { mtype: "POST", $.ajax({ url: 'EDI.asmx/GetTestJSONString', type: "POST", contentType: "application/json; charset=utf-8", data: "{}", dataType: "text", //not json . let me try to parse success: function(msg, st) { if (st == "success") { var gridData; //strip of "d:" notation var result = JSON.parse(msg); for (var property in result) { gridData = result[property]; break; } var objGridData = eval("(" + gridData + ")"); //creates an object with visible data and structure var tbl = jQuery('table.scroll')[0]; alert(objGridData.rows[0].PartnerID); //displays the correct data //tbl.addJSONData(objGridData); //error received: addJSONData not a function //error received: addJSONData not a function (This uses eval as shown in the documentation) //tbl.addJSONData(eval("(" + objGridData + ")")); //the line below evaluates fine, creating an object and visible data and structure //var objGridData = eval("(" + gridData + ")"); //BUT, the same thing will not work here //tbl.addJSONData(eval("(" + gridData + ")")); //FIREBUG SHOWS THIS AS THE VALUE OF gridData: // "{"total":"1","page":"1","records":"5","rows":[{"ID":1,"PartnerID":"BCN","DateTimeInserted":new Date(1214412777787)},{"ID":2,"PartnerID":"BCN","DateTimeInserted":new Date(1212088125000)},{"ID":3,"PartnerID":"BCN","DateTimeInserted":new Date(1212088125547)},{"ID":4,"PartnerID":"EHG","DateTimeInserted":new Date(1235603192033)},{"ID":5,"PartnerID":"EMDEON","DateTimeInserted":new Date(1235603192000)}]}" } } }); }, jsonReader: { root: "rows", //arry containing actual data page: "page", //current page total: "total", //total pages for the query records: "records", //total number of records repeatitems: false, id: "ID" //index of the column with the PK in it }, colNames: [ 'ID', 'PartnerID', 'DateTimeInserted' ], colModel: [ { name: 'ID', index: 'ID', width: 55 }, { name: 'PartnerID', index: 'PartnerID', width: 90 }, { name: 'DateTimeInserted', index: 'DateTimeInserted', width: 100}], rowNum: 10, rowList: [10, 20, 30], imgpath: 'http://localhost/DNN5/js/jQuery/jqGrid-3.4.3/themes/sand/images', pager: jQuery('#pager'), sortname: 'ID', viewrecords: true, sortorder: "desc", caption: "TEST Example")};

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  • Faster way to split a string and count characters using R?

    - by chrisamiller
    I'm looking for a faster way to calculate GC content for DNA strings read in from a FASTA file. This boils down to taking a string and counting the number of times that the letter 'G' or 'C' appears. I also want to specify the range of characters to consider. I have a working function that is fairly slow, and it's causing a bottleneck in my code. It looks like this: ## ## count the number of GCs in the characters between start and stop ## gcCount <- function(line, st, sp){ chars = strsplit(as.character(line),"")[[1]] numGC = 0 for(j in st:sp){ ##nested ifs faster than an OR (|) construction if(chars[[j]] == "g"){ numGC <- numGC + 1 }else if(chars[[j]] == "G"){ numGC <- numGC + 1 }else if(chars[[j]] == "c"){ numGC <- numGC + 1 }else if(chars[[j]] == "C"){ numGC <- numGC + 1 } } return(numGC) } Running Rprof gives me the following output: > a = "GCCCAAAATTTTCCGGatttaagcagacataaattcgagg" > Rprof(filename="Rprof.out") > for(i in 1:500000){gcCount(a,1,40)}; > Rprof(NULL) > summaryRprof(filename="Rprof.out") self.time self.pct total.time total.pct "gcCount" 77.36 76.8 100.74 100.0 "==" 18.30 18.2 18.30 18.2 "strsplit" 3.58 3.6 3.64 3.6 "+" 1.14 1.1 1.14 1.1 ":" 0.30 0.3 0.30 0.3 "as.logical" 0.04 0.0 0.04 0.0 "as.character" 0.02 0.0 0.02 0.0 $by.total total.time total.pct self.time self.pct "gcCount" 100.74 100.0 77.36 76.8 "==" 18.30 18.2 18.30 18.2 "strsplit" 3.64 3.6 3.58 3.6 "+" 1.14 1.1 1.14 1.1 ":" 0.30 0.3 0.30 0.3 "as.logical" 0.04 0.0 0.04 0.0 "as.character" 0.02 0.0 0.02 0.0 $sampling.time [1] 100.74 Any advice for making this code faster?

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