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• Read multiple strings from a file C++

  - by user69514

  Hi I need to read different values stored in a file one by one. So I was thinking I can use ifstream to open the file, but since the file is set up in such a way that a line might contain three numbers, and the other line one number or two numbers I'm not sure how to read each number one by one. I was thinking of using stringstream but I'm not sure if that would work. The file is a format like this. 52500.00 64029.50 56000.00 65500.00 53780.00 77300.00 44000.50 80100.20 90000.00 41000.00 60500.50 72000.00 I need to read each number and store it in a vector. What is the best way to accomplish this? Reading one number at a time even though each line contains a different amount of numbers?

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• How do I check the input data type of a variable in C++?

  - by atinesh singh

  i'm atinesh currently started learning c++ but i've one doubt about how to check the data type of input variable in c++. #include<iostream.h> void main() { double a,b; cout<<"Enter two double values"; cin>>a>>b; if() //if condition false then cout<<"data entered is not of double type"; //i'm having trouble for identifying whether data //is double or not how to check please help me }

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• Writing WCF messages to a text log in configurable directory.

  - by Arsh

  Hello everyone, I have a WCF web service that is deployed at IIS. Part of the web service is to validate the inputs using EntLib 4.1 For ex, the string values can be of specific length and so on. In case of the validation being failed a fault exception is raised and the service is supposed to write the message in log file. How do I go about creating the log file to a location that can be configured from a config file. Basically how do we write messages from IIS (since the service is hosted at IIS, I am assuming that that will be the source !!!!) Regards.

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• Vertically center CSS techniques don't work in Chrome

  - by at.

  I've gone through stackoverflow questions and a whole bunch of articles on vertically centering text like the following: http://blog.themeforest.net/tutorials/vertical-centering-with-css/ None of the techniques seem to work with the latest version of Chrome. Is that just the nature of Chrome? My text just always appears at the top. It seems that whenever I use 50% or 100% as values for CSS's height or top, nothing happens. I just need a single line of text vertically centered. line-height isn't helpful because I want it centered in the middle of the browser window... I don't know how tall the browser window is going to be. UPDATE: The problem is apparently Foundation 4. Once I delete the following everything works as expected: <link href="/assets/foundation_and_overrides.css?body=1" media="screen" rel="stylesheet" /> Any idea on how to make it work with Foundation 4?

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• How can this code be made more Pythonic?

  - by usethedeathstar

  This next part of code does exactly what I want it to do. dem_rows and dem_cols contain float values for a number of things i can identify in an image, but i need to get the nearest pixel for each of them, and than to make sure I only get the unique points, and no duplicates. The problem is that this code is ugly and as far as I get it, as unpythonic as it gets. If there would be a pure-numpy-solution (without for-loops) that would be even better. # next part is to make sure that we get the rounding done correctly, and than to get the integer part out of it # without the annoying floatingpoint-error, and without duplicates fielddic={} for i in range(len(dem_rows)): # here comes the ugly part: abusing the fact that i overwrite dictionary keys if I get duplicates fielddic[int(round(dem_rows[i]) + 0.1), int(round(dem_cols[i]) + 0.1)] = None # also very ugly: to make two arrays of integers out of the first and second part of the keys field_rows = numpy.zeros((len(fielddic.keys())), int) field_cols = numpy.zeros((len(fielddic.keys())), int) for i, (r, c) in enumerate(fielddic.keys()): field_rows[i] = r field_cols[i] = c

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• Doing a SetLength on an array passed into a proc by reference

  - by csharpdefector

  Hi All, Sure, even I can do this... var testarray : array of string; setlength(testarray, 5); but if I want to get clever and have a procedure into which I pass the array by referance like this I cant do it! procedure DoStuffWithArray(var passedarray : array of string); begin setlength(passedarray, 5); end; compiler says 'incompatible types' on the single line of code in my proc. I can do other stuff on the array like set set element values if i do a setlength before i call the proc, but I cannot do the setlength in my proc, which is what I want to do. Any help much appreciated, thanks all.

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• Insert record into mysql db with Entity Framework

  - by sanfra1983

  Hi, the problem is that it will insert a new record in a mysql table, I have already done the mapping of the mysql db and I have already done tests returning data and everything works. Now I read from a file, where there are queries written, I have them run me back and the result of true or false based on the final outcome of single query written to the file. Txt; I did this: using (var w = new demotestEntities ()) ( foreach (var l listaqueri) ( var p = we.CreateQuery <category> (l); we.SaveChanges (); result = true; ) ) but it does not work, I sense that it returns no errors, but neither the result given written in the query. txt file is as follows: INSERT INTO category (id, name) VALUES (null, 'test2') anyone can help me?

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• Changing the value of datagridComboBoxColumn on checking/unchecking of check boxes in datagridcheckb

  - by MD

  I have a wpf data grid,where there are two data template columns One of which ahs check box as the data template adn teh other has combo box as the data template. Now my requirement is,i need to disable few of the options in the combo boxes depending on the check box checked or unchecked for each individual rows... With the cod etaht i ahve tried,i am able to change teh values of teh combo boxes,but it changes for the whole column and not fro individual rows.. Please let me kneo how to determine the combo boxes for the corresponding check boxes in a particular row.

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• How to convert Beautiful Soup Unicode into a decimal value?

  - by MikeTheCoder

  I'm trying to Use python's Beautiful Soup Library to grab a bunch of divs from an html file, and from there get the string - which is a money value - that's inside the div. Then remove the dollar sign and convert it to a decimal so that I can use a greater than and less than conditional statement to compare values. I have googled the heck out of it and can't seem to come up with a way to convert this unicode string into a decimal value. I really could use some help here. How do I convert unicode into a decimal value? This was my last attempt: import unicodedata from bs4 import BeautifulSoup soup = BeautifulSoup(open("/Users/sm/Documents/python/htmldemo.html")) for tag in soup.findAll("div",attrs={"itemprop":"price"}) : val = tag.string new_val = val[8:] workable = int(new_val) if workable > 250: print(type(workable)) else: print(type(workable)) Edit: When I print the type of new_val I get : print(type(new_val))

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• How do you make your Java application memory efficient?

  - by Boune

  How do you optimize the heap size usage of an application that has a lot (millions) of long-lived objects? (big cache, loading lots of records from a db) Use the right data type Avoid java.lang.String to represent other data types Avoid duplicated objects Use enums if the values are known in advance Use object pools String.intern() (good idea?) Load/keep only the objects you need I am looking for general programming or Java specific answers. No funky compiler switch. Edit: Optimize the memory representation of a POJO that can appear millions of times in the heap. Use cases Load a huge csv file in memory (converted into POJOs) Use hibernate to retrieve million of records from a database Resume of answers: Use flyweight pattern Copy on write Instead of loading 10M objects with 3 properties, is it more efficient to have 3 arrays (or other data structure) of size 10M? (Could be a pain to manipulate data but if you are really short on memory...)

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• UIWebView: Media Player Rotates View Controller

  - by RileyE

  I'm encountering an issue while using a webview. My app is currently a portrait application, but when a media player loads in a webview within my app, the user can rotate the player, which rotates my view controller as well. I know I can get a notification for when the player comes up and disappears, but is there a way to prevent it from rotating the controller in the first place? It doesn't seem like anyone has an answer. I have all of the standard "don't rotate unless if I tell you to" methods and plist values, but its still rotating. Its only when I load up a webview and the media player loads over it. If I rotate my device, the media player rotates along with it, which feels natural, but when I go back to the webview view controller, its rotated, which isn't good.

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• Logging NHibernate SQL queries

  - by GuestMVCAsync

  Is there a way to access the full SQL query, including the values, inside my code? I am able to log SQL queries using log4net: <logger name="NHibernate.SQL" additivity="false"> <level value="ALL"/> <appender-ref ref="NHibernateSQLFileLog"/> </logger> However, I would like to find a way to log SQL queries from the code also. This way I will log the specific SQL query that causes an exception in my try/catch statement. Right now I have to data-mine the SQLFileLog to find the query that caused the exception when an exception occurs and it is not efficient.

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• How can i pass a single additional argument to array_map callback in PHP?

  - by Gremo

  How can i pass a single additional argument to array_map callback? In my example i'd like to pass $smsPattern (as a second argument, after current element in $featureNames) to the function array_map with $getLimit closure: $features = $usage->getSubscription()->getUser()->getRoles(); // SMS regular expression in the form of ROLE_SEND_SMS_X $smsPattern = '/^ROLE_SEND_SMS_(?P<l>\d+)$/i'; // Function to get roles names and X from a role name $getNames = function($r) { return trim($r->getRole()); }; $getLimit = function($name, $pattern) { if(preg_match($pattern, $name, $m)) return $m['l']; }; // Get roles names and their limits ignoring null values with array_filter $featuresNames = array_map($getNames, $features); $smsLimits = array_filter(array_map($getLimit, $featureNames, $smsPattern)); With this code i'm getting a weird warning: Warning: array_map() [function.array-map]: Argument #3 should be an array. Of course di reason is for reusing $getLimit closure with another regular expression like $smsPattern. Thanks.

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• click and submit button id with jquery

  - by user836910

  my aim is to submit a button id using jquery into a database im only interested in the button not its value. $("#button").click(function(){ var p = $(this).attr("id"); $.ajax({ type: "POST", url: subpage.php", data: 'b='+p, cache: false, success: function(html) { //process live } }); return false; }); subpage.php $item = $_POST['b']; $query = mysql_query("SELECT * FROM table WHERE id = '25' AND bttnid = '$item'"); if(count($query)==0){ mysql_query("INSERT INTO table VALUES ('','25','$item') "); } it doesn't submit. please assit

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• Downsampling the number of entries in a list (without interpolation)

  - by Dave

  I have a Python list with a number of entries, which I need to downsample using either: A maximum number of rows. For example, limiting a list of 1234 entries to 1000. A proportion of the original rows. For example, making the list 1/3 its original length. (I need to be able to do both ways, but only one is used at a time). I believe that for the maximum number of rows I can just calculate the proportion needed and pass that to the proportional downsizer: def downsample_to_max(self, rows, max_rows): return downsample_to_proportion(rows, max_rows / float(len(rows))) ...so I really only need one downsampling function. Any hints, please? EDIT The list contains objects, not numeric values so I do not need to interpolate. Dropping objects is fine.

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• ASP.Net MVC Web App not running

  - by Aidan Host

  Hi, I developed an ASP.Net MVC v1 web application and it ran fine on our server. The client wanted to move to another server, and the site does not run on the new host's server. The new server specs: Windows 2008 ASP.Net Framework v4 ASP.Net MVC 2 (afaik its included with .Net v4) IIS 7.5 (afaik) Error Message: Could not load file or assembly 'System.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. My understanding is that it should be backwards compatible. Is the app really trying to run in ASP.Net MVC v1 when v2 is available? I have already tried deploying the MVC .dlls to the Bin folder, but it did not work. I also tried changing all the system.Web.Mvc Version values (in the web.config for the web app) from 1.0.0.0 to 2.0.0.0, which also did not work. Any assistance will be greatly appreciated.

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• How to get a green to show up like the charging battery on the iPhone lock screen?

  - by tarheel

  I am trying to get a color to show up on screen just like the charging battery (shown here): After looking at the Apple Documentation on UIColor here, I have attempted using both colorWithHue:saturation:brightness:aplha: and colorWithRed:green:blue:alpha: to get a color to show up like that. For example when I use colorWithHue:.3 saturation:.84 brightness:1 alpha:.5 on a black background, it renders a color like this: or the colorWithRed:0 green:1 blue:0 alpha:.5 on a black background shows up like this: It doesn't have that translucent or glossy look to it. Is there a better method to use? Or do I just not have the values right? (I have tried many combinations)

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• Passing javascript form variables into jQuery function not working

  - by Chase

  I am trying to pass some JavaScript variables that I have assigned to form variables into a query string used by a jQuery plug in called fancybox. If I hard code in the string that I want lightbox works great, however I need it to pass some form values in there to make it work as desire. <script type="text/javascript"> $(document).ready(function(){ var item = document.itemFinder.item; var zip = document.itemFinder.zip; var radius = document.itemFinder.radius; var dataString = "item=" + item + "&zip=" + zip + "&radius=" + radius; $("#various3").fancybox({ ajax : { type : "POST", data : dataString}, 'scrolling' : 'auto', 'overlayOpacity' : '0' } ); }); </script> What am I doing wrong?

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• C# is there a problem with division?

  - by Tom

  This is a piece of my code, it is called every second, after about 10 seconds the values start to become weird (see below): double a; double b; for (int i = 0; i < currAC.Length; i++ ) { a = currAC[i]; b = aveACValues[i]; divisor = (a/b); Console.WriteLine("a = " + a.ToString("N2") + "\t" + "b = " + b.ToString("N2")); Console.WriteLine("divisor = " + divisor); Console.WriteLine("a+b = " + (a+b)); } and the output: a = -0.05 b = 0.00 divisor = 41 a+b = -0.0524010372273268 currAC and aveACValues are double[] what on earth is going on???? The addition result is correct every time, but the division value is wrong, yet it is reading a and b correctly?? EDIT: '41' is the value of the first calculation, ie when a = currAC[0], but this should not remain???

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• Check checkbox in an asax page through javacsript

  - by Khushi

  I have a default page which loads different controls on pageload according to the querystring. I have a control which creates checkbox list (inside div_A) on load and get checkbox checked through database, then i click Continue, div_A get invisible with all the checked checkbox id in hidden field and div_B is visible true. On Go Back click, div_B is visible false and div_A get visible true and following javascript is fired to check the selected checkbox, but it does not work Javascript : function goBack() { var SIds = document.getElementById("<%=hdv_Data.ClientID %>").value; // hdv_Data is the hidden field var Ids_Arr = new Array(); Ids_Arr = SIds.split(','); for (j = 0; j < Ids_Arr.length; j++) { if(Ids_Arr[j] != 0) { alert(Ids_Arr[j]); // works till here, gets correct values in array var chk = document.getElementById(Ids_Arr[j]); alert(chk); chk.checked = true; } } }

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• converting a form from text to textarea

  - by David Cook

  I have a form created to pull PHP values into my database. I created the form with all type="text" constructions. What follows is the code that used to set up the input of data and confirmed that it is functional. <label>About Me: <input type="text" name="BIO_info"/></label> I converted the input to a textarea and adjusted some parameters for proper display. Unfortunately, it has broken the ability for the script to function. What follows is the code I wrote to convert and store from a text area input. <label for="BIO_info" style=" margin-bottom: 500px; margin-top: 2000px; ">About Me: <textarea name="BIO_info" rows="20" cols="60" style="resize: none; overflow-y: hidden;vertical-align:middle;"></textarea> <p> I would appreciate any suggestions.

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• How do I find the previous/default value of a radio button in JS?

  - by royrules22

  I'm not sure if this is even possible, but I figured I'd ask before clubbing togehter an ugly solution. What I have is a group of radio buttons and I want to trigger a function if the radio button value is changed. For example say there are three buttons X Y and Z with Y default selected. If a user clicks on an unselected button (i.e. X or Z) then the function gets triggered but if he/she clicks on Y (which is already selected) nothing happens. Naturally the best solution would be to fire the function on an onchange event but IE6 doesn't fire onchange until the focus is no longer on the element which is not satisfactory. So is there a way to know what the previous value of the radio button was or at least what its default value is? I could easily create an array of default values and check against that but I'm trying to reduce the overhead. Please no jQuery suggestions ;)

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• [SEO] sitemap.xml What is the precision of the priority field?

  - by Christoph

  Unfortunately the specification does not tell anything about precision. The xml scheme definition states that it is of the type xsd:decimal: <xsd:restriction base="xsd:decimal"> <xsd:minInclusive value="0.0"/> <xsd:maxInclusive value="1.0"/> </xsd:restriction> I have a sitemap generator that uses up to 10 positions after decimal point. Where often only the last few positions differ. These numbers are perfectly right according to the xsd, but yet i found some pages(3,4) that state that only 0.0, 0.1, 0.2, .., 1.0 are valid values. How will the search engines react to such a sitemap? Will some just round the value? I know that it is unlikely that someone can provide an answer to that question, unless he works for that search engine, but i think experiences will also do.

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• How can I (both) create a row and accessing that row in the same 'Stored Procedure'?

  - by Richard77

  Hello, I'd like to get the value of the id column for an object just after I've created it. But I don't want to run another query for that. My book for beginner (SQL Server 2008 for Dummies) says that there are 2 tables (inserted and deleted) that hold the last row(s) that have been inserted, updated, or deleted. Unfortunately, only Triggers (says the book) can access those tables. But, if I use triggers, they will go off each time I "insert" a row even when I don't need them that functionality. Can I obtain the same effect with a Store Procedure (without having to run a separate query?) This is what I'm trying to do CREATE PROCEDURE myProcedure DECLARE @OrganizationName @ColumnID OUTPUT AS INSERT INTO Organization (OrganizationName) VALUES (@OrganizationName) SET @ColumnID = (// Please, I need Help here ...) Thanks for helping

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• How to tell which thread(s) are producing all the garbage?

  - by Brad Hein

  I have an app with about 15 threads. Most do mundane tasks and sleep most of their lives. Others collect information and cache it in hashmaps. The hashmaps grow to a moderate size and level out. The number of keys and size of value remains constant, but the contents of the values changes (at 33 keys per second average). When I start my app, I notice the garbage collection interval goes from minutes to once per second, and the amount of garbage is 700k+ each time. In fact as I was writing this, it caused my phone to reboot with an error "Referencetable Overflow". Here's my question: Are there any tricks to identifying which threads are producing the garbage, or even finding out more about what garbage they are producing?

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