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• Impressing Potential Employers

  - by superfly123

  Where I am, I can't afford to get certification. I'm definitely not the best programmer, but I do know my junk. I've been writing software in C++ for over 8 years now and have a very good knowledge of the Win32 API. But when applying for jobs, I get rejected every time I send a resume. I've given my resume to recruitment firms and asked them what they think's wrong with it and they said the only thing they could think of is the fact that I don't have certifications to prove that I know my stuff. But in my resume, I explain my previous work and projects, and also note that upon request they can actually see what I've done. Is there anything that you would suggest that might help others to stop ignoring my resumes? Thank you

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• Do you have references issues with Visual Studio 2008 and C#.Net?

  - by Brian T Hannan

  I'm working on a project and it seems that every time someone checks out the project from source control to build it on their local box they have issues building because references are no longer resolved. I can't figure out if it's a configuration issues or a Visual Studio 2008 issue. Is anyone else having this problem? If so, is there something you can do to fix this issue? Note: it might have something to do with explicit paths to the DLLs being referenced or how they are referenced ... I'm not quite sure.

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• Is this plain stupid: GIT Sharing Via DropBox?

  - by yar

  I realize that there are similar questions, but my question is slightly different. I'm wondering whether sharing a bare repository via a synchronized DropBox folder on multiple computers would work for sharing code via GIT. Really what I want to know is: is sharing a GIT repo via DropBox (the repo gets updated on each person's local drive) the same as sharing it from one centralized location, e.g., via SSH, git or HTTP? Is this the same or different from sharing a GIT repo via a shared network drive? Note: This is not an empirical question: it seems to work fine. I'm asking whether the way a GIT repo is structured is compatible with this way of sharing. EDIT To clarify/repeat, I'm talking about keeping the GIT repository on DropBox as a bare repository. I'm not talking about keeping the actual files that are under source control in DropBox.

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• Thread Suicide on Shutdown?

  - by yar

  I have a java.util.Timer running at a fixed interval. I have added a Runtime#addShutdownHook and it shuts down when the VM ends normally or abnormally. However, it keeps the VM alive when a main terminates, unless I insist by doing a System.exit in the main. Is there any way for me to check if I'm the last Thread standing, or some other way to avoid altering a main that would exit normally on finish? Note: I know a lot of people believe that java.util.Timer is deprecated (it's not), but unless your alternative helps me solve this problem...

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• Is this a secure way to structure a mysql_query in PHP

  - by Supernovah

  I have tried and tried to achieve an SQL injection by making custom queries to the server outside of firefox. Inside the php, all variables are passed into the query in a string like this. Note, by this stage, $_POST has not been touched. mysql_query('INSERT INTO users (password, username) VALUES(' . sha1($_POST['password']) . ',' . $_POST['username'] . ')); Is that a secure way to make a change?

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• Retrieving Gtk::Widget's relative position: get_allocate() doesn't work

  - by a-v

  I need to retrieve the position of a Gtk::Widget relative to its parent, a Gtk::Table. Most sources (e.g. http://library.gnome.org/devel/gtk-faq/stable/x642.html) say that one needs to call Gtk::Widget::get_allocation(). However, the returned Gtk::Allocation object always contains x = -1, y = -1, width = 1, height = 1. I have to note that this happens before the Gtk::Table object is actually exposed and rendered. A call to show_all_children() or check_resize(), which I would expect to recalculate child widget geometry, doesn't help. What am I doing wrong? Thanks in advance.

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• Having problem with a crawl service in .net: Server not responding to IP ping. Is it bandwidth or ht

  - by Hamid

  Hi to all I develop web crawling service (windows service / multi-thread) . its work fine, but sometimes my server network not response. and i can't ping server IP (from internet), but can ping by other network card (local ip) that not access to internet. after i open server with remote desktop and stop crawling service. i could ping. What's my problem? Bandwidth limit or max connection limit exceed or ??? how to prevent this issue? Note: when this problem occur, i open browser for browse web site, but can't open any website!!! Could you please help me. Thanks in advanced

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• git - is there a way to get only required files in the working directory

  - by spoonboy

  I'm new to git and trying to use it with a project that has many (several hundreds) sources. The problem I have is that git is extracting all the project's sources to my working directory when doing checkout. This makes a lot of mess as I have to jump between the files and can unintentionally change/corrupt files that I wasn't even planning to change. I would prefer to extract only sources that I'm going to modify and then work with them. So, is there a way to tell git that I only going to work with specific sources, and so, that only these sources would be extracted to the working directory? Note, that this is not a partial checkout or something like this. I'm ok to checkout the whole branch. It's more about organising a working folder. Thanks.

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• Can I stop SQL*Plus from displaying "connected" when I have a "connect" in a script?

  - by René Nyffenegger

  I have a few sql scripts that I need to run via SQL*Plus. These scripts connect several times as different users with a connect user_01/pass_01@db_01. Now, each time the script does such a connect, it confirms the successful connection with a connected. This is distracting and I want to turn it off. I can achieve what I want with a set termout off connect user_01/pass_01@db_01 set termout on Is there a more elegant solution to my problem? Note, it doesn't help to permanently set termout off at the start of the script since I need to know if a command didn't run successfully.

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• How can I implement a login wall for expired or inappropriate pages?

  - by Redandwhite

  I am writing a website that very explicitly requires a login wall. Visitors should be required to log in before they are allowed to view a page. The page being built depends very much on the user's "ID". I am not sure how or where to store the user's login. I am not sure whether I should use a session variable (e.g. Session["userId"]), or some other method. The problem I see with session variables is that it's difficult to time out sessions. Note: I'm using C# 3.5 with ASP.NET in Visual Studio 2008.

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• How can an SQL query return data from multiple tables

  - by Fluffeh

  I would like to know how to get data from multiple tables in my database, what types of methods are there to do this, what are joins and unions and how are they different from one another? When should I use each one compared to the others? I am planning to use this in my (for example - PHP) application, but don't want to run multiple queries against the database, what options do I have to get data from multiple tables in a single query? Note: I am writing this as I would like to be able to link to a well written guide on the numerous questions that I constantly come across in the PHP queue, so I can link to this for further detail when I post an answer. The answers cover off the following: Part 1 - Joins and Unions Part 2 - Subqueries Part 3 - Tricks and Efficient Code

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• Write a recursive function in C that converts a number into a string

  - by user3501779

  I'm studying software engineering, and came across this exercise: it asks to write a recursive function in C language that receives a positive integer and an empty string, and "translates" the number into a string. Meaning that after calling the function, the string we sent would contain the number but as a string of its digits. I wrote this function, but when I tried printing the string, it did print the number I sent, but in reverse. This is the function: void strnum(int n, char *str) { if(n) { strnum(n/10, str+1); *str = n%10 + '0'; } } For example, I sent the number 123 on function call, and the output was 321 instead of 123. I also tried exchanging the two lines within the if statement, and it still does the same. I can't figure out what I did wrong. Can someone help please? NOTE: Use of while and for loop statements is not allowed for the exercise.

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• Is there a definitive list of differences between the Ruby on Rails versions?

  - by jedijim

  Is there a list of the differences between the various versions of Rails somewhere on the web? I'm working through an older book about Rails that uses Rails 1.2. I know there are other ways to learn Rails these days, but I thought it would be interesting to try and convert all of the exercises in the book to a more modern versions of Rails (I'm currently working with 2.3.5). A comprehensive list of differences between the various releases would be very helpful. Note that I don't consider the git log a good source of information, as commit messages almost never tell the full story.

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• How to organize Windows Phone code base to target both 7.x and 8 platforms

  - by ljubomir

  I took over a Windows Phone project which was previously targeting WP 7.1 platform, and with the recent announcement of the new platform it should target WP 8 as well. My VS 2010 solution consists on several projects (Data access, Model, Tests and WP7 client app) and i am wandering on how to include support for WP8. I have to note that the code-base is not compatible with WP8, due to usage of Toolkit controls and other 3rd party libraries targeted for WP7.1 specifically. Also there is another problem with the Visual Studio versions - WP7.1 can work with VS 2010, but WP8 requires VS 2012. Should i move the whole code-base to VS 2012? Any good advice on how to organize code-base in a most meaningful way in order to avoid duplication and possible painful maintenance? I am thinking between one solution - multiple projects vs. multiple solutions - reusable projects approach. Code duplication (like two separate folders/solutions) should be the least possible approach (fallback).

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• Mystery in Ruby sinatra

  - by JVK

  I have the following Sinatra code: post '/bucket' do # determine if this call is coming from filling out web form is_html = request.content_type.to_s.downcase.eql?('application/x-www-form-urlencoded') # If this is a curl call, then get the params differently unless is_html params = JSON.parse(request.env["rack.input"].read) end p params[:name] end If I call this using Curl, params has values, but when this is called via a web form, then params is nil and params[:name] has nothing. I spent several hours figuring out why it happens and asked help from other people, but no one could really find out what is going on. One thing to note is, if I comment out this line: params = JSON.parse(request.env["rack.input"].read) then params has the correct value for "web-form" posting. Actually, the goal is to get the params value if this code is being called by CURL call, so I used: params = JSON.parse(request.env["rack.input"].read) but it messed up the web-form posting. Can anyone solve this mystery?

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• Doesn't Matlab optimize the following?

  - by kloop

  I have a very long vector 1xr v, and a very long vector w 1xs, and a matrix A rxs, which is sparse (but very big in dimensions). I was expecting the following to be optimized by Matlab so I won't run into trouble with memory: A./(v'*w) but it seems like Matlab is actually trying to generate the full v'*w matrix, because I am running into Out of memory issue. Is there a way to overcome this? Note that there is no need to calculate all v'*w because many values of A are 0. EDIT: If that were possible, one way to do it would be to do A(find(A)) ./ (v'*w)(find(A)); but you can't select a subset of a matrix (v'*w in this case) without first calculating it and putting it in a variable.

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• Are compound command's second and subsequent lines not effected by HISTCONTROL in bash?

  - by UniMouS

  When consulting bash's man page, it read this sentence about bash history: The second and subsequent lines of a multi-line compound command are not tested, and are added to the history regardless of the value of HISTCONTROL. But I have tried this: $ HISTCONTROL=ignorespace $ if [ -f /var/log/messages ] > then > echo "/var/log/message exists." > fi $ history | tail -2 18 HISTCONTROL=ignorespace 19 history | tail -2 Note that the if is leaded by a space. Why the second line of this if compound command still not appear in the history?

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• Occasional conversion error using SUM function

  - by user153777

  My app uses sql2000 and a select statement it uses will sometimes fail. Once a week or so the select returns the error 'Error Converting data type varchar to numeric' SQL: sum(case when ISNULL(form_prsn_id, -1) = irpd_prsn_id then convert(dec(11,2), case when valu_value = '' then '0' else isnull (valu_value,'0') end)* case when fmdt_deduction_flag = 'Y' then -1 else 1 end else 0 end) as client_sum The valu_value field is a varchar and stores some numeric and some varchar. But including my join and where clause filter it will always select numeric or empty string. When it is failing I can remove the SUM, see the data and know that its numeric. So why would the SUM function sometimes (say 5% of time) fail on data that is numeric. I wonder if SQL somehow "looks ahead" to ensure it could convert to decimal on more than just the rows returned without the sum. Note I have discovered a fix where I include ( where isNumeric(valu_value) = 1 ) Thanks

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• Fastest method in merging of the two: dicts vs lists

  - by tipu

  I'm doing some indexing and memory is sufficient but CPU isn't. So I have one huge dictionary and then a smaller dictionary I'm merging into the bigger one: big_dict = {"the" : {"1" : 1, "2" : 1, "3" : 1, "4" : 1, "5" : 1}} smaller_dict = {"the" : {"6" : 1, "7" : 1}} #after merging resulting_dict = {"the" : {"1" : 1, "2" : 1, "3" : 1, "4" : 1, "5" : 1, "6" : 1, "7" : 1}} My question is for the values in both dicts, should I use a dict (as displayed above) or list (as displayed below) when my priority is to use as much memory as possible to gain the most out of my CPU? For clarification, using a list would look like: big_dict = {"the" : [1, 2, 3, 4, 5]} smaller_dict = {"the" : [6,7]} #after merging resulting_dict = {"the" : [1, 2, 3, 4, 5, 6, 7]} Side note: The reason I'm using a dict nested into a dict rather than a set nested in a dict is because JSON won't let me do json.dumps because a set isn't key/value pairs, it's (as far as the JSON library is concerned) {"a", "series", "of", "keys"} Also, after choosing between using dict to a list, how would I go about implementing the most efficient, in terms of CPU, method of merging them? I appreciate the help.

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• Getting \ building latest NHibernate build

  - by Alex Yakunin

  I'd like to get the latest NHibernate build or build it by my own. The build available at SourceForge is dated by Nov 2009, although I see there was a lot of activity later, especially related to LINQ development. So what is the best option? I can: Get the latest source code and try to build it. Are there any instructions for this? Get one of latest builds shared by someone else. Are there any people maintaining such builds? Please note, that I'm not interested in 8-month old builds - I need the latest code for tests (LINQ, performance). I know there is a similar question, but it looks like top answers there are outdated.

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• Embedded Java Databases for Large Data Sets

  - by ExAmerican

  I would like to port a PHP/MySQL-based client/server application to be a standalone desktop application written in Java. The database has grown to be fairly large, with several tables with hundreds of thousands of rows. I expect these could grow to over a million entries for certain tables. What embedded database would best handle this? HSQLDB and Sqlite seem to be the obvious choices, though I'm guessing there are others out there as well. My main priorities are the ability to perform queries on large amounts of data efficiently (this thread seems to confirm Sqlite can handle this) and the ease with which I can import old data from MySQL (I remember HSQLDB being kind of a pain for that). Note: I am aware that similar questions comparing embedded databases have been posted before (for example here and here) but as my priorities differ somewhat from most applications considering the large data migration I thought it justified a new question.

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• What's the most efficient way to repeatedly remove leading text using Vim?

  - by John Topley

  What's the most efficient way to remove the text 2010-04-07 14:25:50,773 DEBUG This is a debug log statement - from a log file like the extract below using Vim? 2010-04-07 14:25:50,772 DEBUG This is a debug log statement - 9,8 2010-04-07 14:25:50,772 DEBUG This is a debug log statement - 1,11 2010-04-07 14:25:50,772 DEBUG This is a debug log statement - 5,2 2010-04-07 14:25:50,772 DEBUG This is a debug log statement - 8,4 This is what the result should look like: 9,8 1,11 5,2 8,4 Note that on this occasion I'm using gVim on Windows, so please don't suggest any UNIX programs which may be better suited to the task—I have to do it using Vim.

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• Replacing Text in a Toggled Anchor with JQuery

  - by willmcneilly

  Hi I'm trying to change the text in an anchor on toggle. I'm doing this way at the moment but have found that once the anchor markup has replaced the toggle no longer works. Can someone please explain why this is happening and a solution? Many thanks. $('a#toggleHeader').toggle(function() { $('#header-wrapper').slideUp(); $(this).replaceWith('< href=\"#\" id="toggleHeader">Show Header</>'); //Note:I've move the anchor because I can only post one anchor as a new user },function(){ $('#header-wrapper').slideDown(); $(this).replaceWith('<a href=\"#\" id="toggleHeader">Hide Header</a>'); });

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• How do I use a graphics method to pass parameters? Example is below.

  - by sonny5

  private static void getCorners(out float Wx, out float Wy, out float Vx, out float Vy) { // note-- I don't know how to flip the Y axis using this method... this is not a "graphics" method // In other words, I should use something like: // flipY(object sender, System.EventArgs e); // but don't know the syntax or whatever // I tried to do this: //Graphics g = this.CreateGraphic //Matrix myMatrix2 = new Matrix(1, 0, 0, -1, 0, 0); // flip Y axis //g.Transform = myMatrix2; //g.TranslateTransform(0, 480, MatrixOrder.Append); // ...but I get the error: // error CS0026: Keyword 'this' is not valid in a static property, static method, or // static field initializer Wx = 1.00F; Wy = 1.00F; // make this 1.00 (not 3.00F) down from the TOP since cannot get Y flipped Vx = ((Wx- WXmin)*((VXmax-VXmin)+VXmin)/(WXmax-WXmin)); Vy = ((Wy-WYmin)*(VYmax-VYmin)/(WYmax-WYmin)+VYmin); } thanks, Sonny5

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• LINQ to SQL - Get only substring from a field

  - by domanokz

  I'm studying ASP.NET MVC and I use LINQ to SQL for model. I have a table named "Note" with the fields "Title" and "Content". The "Content" field can contain thousand characters. What I want to do is to display the LIST of notes in a page. I use table with two columns, for "Title" and SUBSTRING of the "Content" (50 characters). My problem is, I don't know how to edit the model so that it will display only the substring of the "Content". Thanks in advance!

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