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• Generic software code style enforcer

  - by FuzziBear

  It seems to me to be a fairly common thing to do, where you have some code that you'd like to automatically run through a code style tool to catch when people break your coding style guide(s). Particularly if you're working on code that has multiple languages (which is becoming more common with web-language-x and javascript), you generally want to apply similar code style guides to both and have them enforced. I've done a bit of research, but I've only been able to find tools to enforce code style guidelines (not necessarily applying the code style, just telling you when you break code style guidelines) for a particular language. It would seem to me a reasonably trivial thing to do by just using current IDE rules for syntax highlighting (so that you don't check style guide rules inside quotes or strings, etc) and a whole lot of regexes to enforce some really generic things. Examples: if ( rather than if( checking lines with only whitespace Are there any tools that do this kind of really generic style checking? I'd prefer it to be easily configurable for different languages (because like it or not, some things would just not work cross language) and to add new "rules" to check new things.

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• Defining a function that is both a generator and recursive [on hold]

  - by user96454

  I am new to python, so this code might not necessarily be clean, it's just for learning purposes. I had the idea of writing this function that would display the tree down the specified path. Then, i added the global variable number_of_py to count how many python files were in that tree. That worked as well. Finally, i decided to turn the whole thing into a generator, but the recursion breaks. My understanding of generators is that once next() is called python just executes the body of the function and "yields" a value until we hit the end of the body. Can someone explain why this doesn't work? Thanks. import os from sys import argv script, path = argv number_of_py = 0 lines_of_code = 0 def list_files(directory, key=''): global number_of_py files = os.listdir(directory) for f in files: real_path = os.path.join(directory, f) if os.path.isdir(real_path): list_files(real_path, key=key+' ') else: if real_path.split('.')[-1] == 'py': number_of_py += 1 with open(real_path) as g: yield len(g.read()) print key+real_path for i in list_files(argv[1]): lines_of_code += i print 'total number of lines of code: %d' % lines_of_code print 'total number of py files: %d' % number_of_py

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• Getting the PC speaker to beep

  - by broiyan

  There has been much written on getting the beep sound from Ubuntu releases over the years. Example: fixing the beep My needs are slightly different in that I do not want to ensure sound card beeps are functioning. Instead, I want PC speaker beeps, the kind produced by the original built-in speaker because I believe they will produce less CPU load. I have confirmed that my computer has the PC speaker by unplugging the external speakers and shutting down Ubuntu. At some point in the shutdown and restart process a beep is heard even though the external speakers have no power. I have tried the following: In /etc/modprobe.d/blacklist.conf, turn these lines into comments: #blacklist snd_pcsp #blacklist pcspkr In .bashrc /usr/bin/xset b on /usr/bin/xset b 100 Enable in the gnome terminal: Edit Profile Prefs General Terminal Bell Ensure no "mute" selections in: System Prefs Sound various tabs (uncheck them all). Select "Enable window and button sounds" in: System Prefs Sound Sound Effects In gconf-editor desktop gnome sound, select the three sound check boxes. In gconf-editor apps metacity general select the audible bell check box. Still I get no PC speaker beeps when I send code 7 to the console via my Java program or use echo -e '\a' on the bash command line. What else should I try? Update Since my goal is to minimize load on the CPU, here is a comparison of elapsed times. Each test is for 100,000 iterations. Each variant was performed three times so three results are presented for each. printwriter.format("%c", 7); // 1.3 seconds, 1.5 seconds, 1.5 seconds Toolkit.getDefaultToolkit().beep(); // 0.8 seconds, 0.3 seconds, 0.5 seconds try { Runtime.getRuntime().exec("beep"); } catch (IOException e) { } // 10.3 seconds, 16.3 seconds, 11.4 seconds These runs were done inside Eclipse so multiply by some value less than 1 for standalone execution. Unfortunately, Toolkit's beep is silent on my computer and so is code 7. The beep utility works but has the most cost.

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• Synchronous vs. asynchronous for publish subscribe communication between JavaScript objects

  - by natlee75

  I implemented the publish subscribe pattern in a JavaScript module to be used by entirely client-side oriented JavaScript objects. This module has nothing to do with client-server communications in any way, shape or form. My question is whether it's better for the publish method in such a module to be synchronous or asynchronous, and why. As a very simplified example let's say I'm building a custom UI for an HTML5 video player widget: One of my modules is the "video" module that contains the VIDEO element and handles the various features and events associated with that element. This would probably have a namespace something like "widgets.player.video." Another is the "controls" module that has the various buttons - play, pause, volume, scrub, fullscreen, etc. This might have a namespace along the lines of "widgets.player.controls." These two modules are children of a parent "player" module ("widgets.player" ??), and as such would have no inherent knowledge of each other when instantiated as children of the "player" object. The "controls" elements would obviously need to be able to effect some changes on the video (click "Play" and the video should play), and vice versa (video's "timeUpdate" event fires and the visual display of the current time in the controls should update). I could tightly couple these modules and pass references to each other, but I'd rather take a more loosely coupled approach by setting up a pubsub type module that both can subscribe to and publish from. SO (thanks for bearing with me) in this kind of a scenario is there an advantage one way or another for synchronous publication versus asynchronous publication? I've seen some solutions posted online that allow for either/or with a boolean flag whereas others automatically do it asynchronously. I haven't personally seen an implementation that just automatically goes with synchronous publication... is this because there's no advantage to it? I know that I can accomplish this with features provided by jQuery, but it seems that there may be too much overhead involved here. The publish subscribe pattern can be implemented with relatively lightweight code designed specifically for this particular purpose so I'd rather go with that then a more general purpose eventing system like jQuery's (which I'll use for more general eventing needs :-).

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• Best way to implement mouse-based movement in MMOG

  - by fiftyeight

  I want to design an MMO where players click the destination they want to walk to with their mouse and the character moves there, similar to Runescape in this manner. I think it should be easier than keyboard movement since the client can simply send the server the destination each time the player clicks on a destination. The main thing I'm trying to decide is what to do when there are obstacles in the way. It's no problem to implement a simple path-finding solution on the client, the question is if the server will do path-finding as well, since it'll probably take too much Computation power from the server. What I though is that when there is an obstacle the client will send only the first coordinate it plans to go to and then when he gets there he'll send the next coordinate automatically. For example if there is a rock in the way the character will decide on a route that is made of two destinations so it goes around the rock and when it arrives at the first destination it sends the next coordinate. That way if the player changes destination is the middle he won't send unnecessary information. Is this a good way to implement it and is there a standard way MMOGs usually do it? EDIT: I should also mention that the server will make sure all movements are legal and there aren't any walls in the way etc. In the way I wrote it should be quite easy since all movements will be sent in straight lines so the server will just check there aren't any obstacles along that line.

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• Pasting from vim in terminal to Google Docs (Firefox + Vimperator) - need to understand

  - by LIttle Ancient Forest Kami

  I had some trouble with copy-pasting text from vim in terminal to Google Docs (aka Drive) document (hereafter GDd) in FF browser (with Vimperator). Note: I have a file opened in Vim 7.2 in terminal :version displays both +clipboard and +xterm-clipboard I'm on Ubuntu 10.04 LTS, so I don't think that's Unity-related I want to use Vim, not GVim, nor gedit... I'm avid fan of mouseless navigation, so solution with mouse was not what I wanted. I have the solution, but I need understanding. What I tried and where it gets me: Yanking whole file text via: ggvGy allows me to: paste it via mouse middle button, NOT with Ctrl+v or Shift+Insert here, in text area for entering question text in gedit but NOT in GDd where I want it pasted, even if I switch Vimperator to pass-through mode with Insert does NOT show in XClip after xclip -o From gedit, I can copy-paste the text into GDd (Vimperator's pass-through mode not required). :%! !xclip -i (or :first, last) reports whole file (all lines, to be precise) as filtered, though shell returns 1 `xclip -o' returns nothing (is empty) or returns previously copied value with 2. no surprise, but I can't paste at all not only to GDd but also to gedit or here setting clipboard (:set clipboard=unnamed) to unnamed doesn't help using "+y or "*y on whole file text actually does the trick So, the question (it's actually three, say "split" and I will): why middle mouse button pastes different things than Ctrl+v and how to know what will be pasted with each? why just yanking (without registers) works with mouse but not with keyboard / XClip? why didn't unnamed register help? After setting, it should make unnamed and * registers same?

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• Very Cool &ndash; Miami 311 System for tracking citizen service requests (Windows Azure, Silverlight

  - by Jim Duffy

  Having grown up in South Florida this short, but very enlightening, video explaining how the City of Miami has implemented a 311 citizen service request system using Windows Azure, Silverlight and Bing Maps definitely caught my attention. Miami311 The Miami311 System is a Windows Azure/Silverlight-based solution which enables City of Miami citizens report and track issues reported to city management. The system uses Bing Maps to plot the location and relevant information about each issue reported. Citizens now have the ability to easily see the status of the issue without having to call the city office. What I found interesting were a couple of benefits that a metropolitan area such as Miami can take advantage of in Windows Azure cloud-based solution. For the city of Miami, both benefits center around the weather. Of course the threat of a hurricane is a real issue in South Florida and what better way to make sure your site stays up during a hurricane then to have the site hosted far away from the eye of the storm. Using a Windows Azure cloud-based architecture the City of Miami is able to host the application within the Microsoft data centers safely away from any hurricane passing through South Florida. The second benefit is the inherent scalability of a Windows Azure based solution. During a severe weather event like thunderstorms or even worse, a hurricane, downed trees and power lines are a commonly reported problem. Being able to quickly scale up the computing resources required to handle the spike in citizens reporting these types of problems on the site is a huge benefit. Once the weather event has passed and downed tree reports begin to subside they can quickly reverse the process and scale the system back down to pre-storm levels. It’s kind of day-to-day kind of stuff but very cool stuff nonetheless. Have a day. :-|

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• Can JSON be made easily and safely editable by the non-technical Excel crowd?

  - by glitch

  I'm looking for a data storage format that's very intuitive and easy to edit. It should be ideally targeted towards the same crowd as Excel. At the same time I would like the data structure to be a tree. Ideally this would be JSON, since it offers both the tree aspect and allows for more interesting constructs like arrays. That and parsing libraries for JSON are ubiquitous, so I don't have to reinvent the wheel. The problem is that, at least with a non-specialized text editor, JSON is a giant pain to edit for a non-technical user. I'm thinking along the lines of someone who might have used Excel in the past, but never a real text editor. Someone who might not be comfortable with the idea of preserving JSON syntax by hand. Are there data formats out there that would fit this profile? I'd very much prefer this to be a JSON actually, but then it would require a solid editing tool that would hide the underlying implementation from the user. Think Excel and how it abstracts CSV syntax from the user. The reason I'm looking for something like this is because the team has been working with pretty hierarchical data for a while now and we've hit the limits of how easy it is to represent in simple CSVs without having to create complex rules for how represent hierarchy semantics from each row. Any suggestions?

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• When I shoot from a gun while walking, the bullet is off the center, but when stand still it's fine

  - by Vlad1k

  I am making a small project in Unity, and whenever I walk with the gun and shoot at the same time, the bullets seem to curve and shoot off 2-3 CMs from the center. When I stand still this doesn't happen. This is my main Javascript code: @script RequireComponent(AudioSource) var projectile : Rigidbody; var speed = 500; var ammo = 30; var fireRate = 0.1; private var nextFire = 0.0; function Update() { if(Input.GetButton ("Fire1") && Time.time > nextFire) { if(ammo != 0) { nextFire = Time.time + fireRate; var clone = Instantiate(projectile, transform.position, transform.root.rotation); clone.velocity = transform.TransformDirection(Vector3 (0, 0, speed)); ammo = ammo - 1; audio.Play(); } else { } } } I assume that these two lines need to be tweaked: var clone = Instantiate(projectile, transform.position, transform.root.rotation); clone.velocity = transform.TransformDirection(Vector3 (0, 0, speed)); Thanks in advanced, and please remember that I just started Unity, and I might have a difficult time understanding some things. Thanks!

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• Is there an excuse for excessively short variable names?

  - by KChaloux

  This has become a large frustration with the codebase I'm currently working in; many of our variable names are short and undescriptive. I'm the only developer left on the project, and there isn't documentation as to what most of them do, so I have to spend extra time tracking down what they represent. For example, I was reading over some code that updates the definition of an optical surface. The variables set at the start were as follows: double dR, dCV, dK, dDin, dDout, dRin, dRout dR = Convert.ToDouble(_tblAsphere.Rows[0].ItemArray.GetValue(1)); dCV = convert.ToDouble(_tblAsphere.Rows[1].ItemArray.GetValue(1)); ... and so on Maybe it's just me, but it told me essentially nothing about what they represented, which made understanding the code further down difficult. All I knew was that it was a variable parsed out specific row from a specific table, somewhere. After some searching, I found out what they meant: dR = radius dCV = curvature dK = conic constant dDin = inner aperture dDout = outer aperture dRin = inner radius dRout = outer radius I renamed them to essentially what I have up there. It lengthens some lines, but I feel like that's a fair trade off. This kind of naming scheme is used throughout a lot of the code however. I'm not sure if it's an artifact from developers who learned by working with older systems, or if there's a deeper reason behind it. Is there a good reason to name variables this way, or am I justified in updating them to more descriptive names as I come across them?

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• Perl script rendered in browser as code through symlink - fine when accessed directly

  - by John Dittmar

  I have a Rails 4 app that has some views that post to Perl cgi scripts. The perl scripts are accessed via a symbolic link to a folder called "cgi-bin". When I navigate to a perl script through the symbolic link they are rendered as text instead of executed (ie: localhost:3000/cgi-bin/test.cgi), however when I access them directly they execute without issue (ie. localhost/path/to/cgi-bin/test.cgi). I am using apache2 on os x. In the directory localhost/path/to/ I have an .htaccess file that contains the following: # General Apache options AddHandler fastcgi-script .fcgi AddHandler cgi-script .cgi Options +FollowSymLinks +ExecCGI I have the exact same lines in the .htaccess file that I have in localhost:3000/ I have also uncommented the AllowOverride all in httpd.conf. The are no errors in apache's error log. When I access the direct link to test.cgi a new line is appended to apache's access log, when I access the script through the symbolic link (and it is rendered as text), there is no line appended to the access log. Any idea why this error occurs? This setup worked fine in a previous version of rails of OS X, but recently I upgraded to Mavericks and figured I should update the Rails application to v4.0 as well.

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• Another good free utility - Campwood Software Source Monitor

  - by TATWORTH

  The Campwoood Source Monitor at http://www.campwoodsw.com/sourcemonitor.html  says in its introduction "The freeware program SourceMonitor lets you see inside your software source code to find out how much code you have and to identify the relative complexity of your modules. For example, you can use SourceMonitor to identify the code that is most likely to contain defects and thus warrants formal review. SourceMonitor, written in C++, runs through your code at high speed, typically at least 10,000 lines of code per second." It is indeed very high-speed and is useful as it: Collects metrics in a fast, single pass through source files. Measures metrics for source code written in C++, C, C#, VB.NET, Java, Delphi, Visual Basic (VB6) or HTML. Includes method and function level metrics for C++, C, C#, VB.NET, Java, and Delphi. Offers Modified Complexity metric option. Saves metrics in checkpoints for comparison during software development projects. Displays and prints metrics in tables and charts, including Kiviat diagrams. Operates within a standard Windows GUI or inside your scripts using XML command files. Exports metrics to XML or CSV (comma-separated-value) files for further processing with other tools.

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• How to refactor a myriad of similar classes

  - by TobiMcNamobi

  I'm faced with similar classes A1, A2, ..., A100. Believe it or not but yeah, there are roughly hundred classes that almost look the same. None of these classes are unit tested (of course ;-) ). Each of theses classes is about 50 lines of code which is not too much by itself. Still this is way too much duplicated code. I consider the following options: Writing tests for A1, ..., A100. Then refactor by creating an abstract base class AA. Pro: I'm (near to totally) safe by the tests that nothing goes wrong. Con: Much effort. Duplication of test code. Writing tests for A1, A2. Abstracting the duplicated test code and using the abstraction to create the rest of the tests. Then create AA as in 1. Pro: Less effort than in 1 but maintaining a similar degree of safety. Con: I find generalized test code weird; it often seems ... incoherent (is this the right word?). Normally I prefer specialized test code for specialized classes. But that requires a good design which is my goal of this whole refactoring. Writing AA first, testing it with mock classes. Then inheriting A1, ..., A100 successively. Pro: Fastest way to eliminate duplicates. Con: Most Ax classes look very much the same. But if not, there is the danger of changing the code by inheriting from AA. Other options ... At first I went for 3. because the Ax classes are really very similar to each other. But now I'm a bit unsure if this is the right way (from a unit testing enthusiast's perspective).

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• license and copyright assignment

  - by corintiumrope

  I'm currently working on a wordpress plugin. My client gives me a specs doc (a powerpoint presentation, if you can call that a specs doc), and I code the requested functionality. Every time I send him code every file containing code starts with these lines: Author: My Name Copyright: The_client's_company.com License: MIT Expat (http://en.wikipedia.org/wiki/Expat_License) My intention being giving my client complete right to relicense and distribute the code under any other license (as the TOS of the freelancing website requires, plus I know he intends to sell it under a proprietary license), but at the same time giving myself the right to expand and redistribute the plugin under MIT license if I wish to (not that I do). The reason is I am paid only 10USD/hour (this is my first gig) so I want to at least keep the right to reuse parts of the code in other projects or expand it if I want to start a similar project myself when I finish the contract (unlikely, but who knows...) or show it to potential employees. The contract we agreed upon doesn't include any licensing specifications but I've informed him on the emails we've interchanged that although all my work is licensed by default as MIT I'm giving my clients the copyright of the code I produce so they can relicense it at will before distribution. Is this the correct way of achieving that?

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• Seeking for a better solution to restrict access in GRUB2 menu

  - by LiveWireBT

  I just read that in certain situations you should also protect access to your GRUB2 menu by setting a password and may be refining acces by adding --unrestricted or --users as arguments to menuentries und submenus. I read the corresponding pages in the Ubuntu Community Documentation and the Arch Wiki. So, I created /etc/grub.d/01_security, stored usernames and passwords in there, made the file executable and ran update-grub. This is working as intended, every action in the menu prompts for username and password, but I also want to modify the automatically generated entries to either restrict them to certain users (via --users) or make them available for everyone, but not editable by everyone (via --unrestricted). I was able to find the proper lines in 10_linux and edit them accordingly, however I'd love to see an easier solution. Perhaps an option like GRUB_DISABLE_RECOVERY="true" or GRUB_DISABLE_OS_PROBER=true in /etc/default/grub for easy (re)configuration (for linux and os-prober generated entries). Here's a diff from my 13.10 installation: $ diff /etc/grub.d/10_linux /etc/grub.d/10_linux_bak 123c123 < echo "menuentry '$(echo "$title" | grub_quote)' ${CLASS} --unrestriced \$menuentry_id_option 'gnulinux-$version-$type-$boot_device_id' {" | sed "s/^$ --- > echo "menuentry '$(echo "$title" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-$version-$type-$boot_device_id' {" | sed "s/^/$submenu_inde$ 125c125 < echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} --unrestricted \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_$ --- > echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_indentation/" 323c323 < echo "submenu --unrestricted '$(gettext_printf "Advanced options for %s" "${OS}" | grub_quote)' \$menuentry_id_option 'gnulinux-advanced-$boot_device_$ --- > echo "submenu '$(gettext_printf "Advanced options for %s" "${OS}" | grub_quote)' \$menuentry_id_option 'gnulinux-advanced-$boot_device_id' {" tl;dr: I'd love the see a simple solution for GRUB2 entries that cannot be modified without a password or are limited to certain users. (Yes, GRUB_DISABLE_RECOVERY="true" is active.)

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• what are some good interview questions for a position that consists of reviewing code for security vulnerabilities?

  - by John Smith

  The position is an entry-level position that consists of reading C++ code and identifying lines of code that are vulnerable to buffer overflows, out-of-bounds reads, uncontrolled format strings, and a bunch of other CWE's. We don't expect the average candidate to be knowledgeable in the area of software security nor do we expect him or her to be an expert computer programmer; we just expect them to be able to read the code and correctly identify vulnerabilities. I guess I could ask them the typical interview questions: reverse a string, print a list of prime numbers, etc, but I'm not sure that their ability to write code under pressure (or lack thereof) tells me anything about their ability to read code. Should I instead focus on testing their knowledge of C++? Ask them if they understand what a pointer is and how bitwise operators work? My only concern about asking that kind of question is that I might unfairly weed out people who don't happen to have the knowledge but have the ability to acquire it. After all, it's not like they will be writing a single line of code, and it's not like we are looking only for people who already know C++, since we are willing to train the right candidate. (It is true that I could ask those questions only to those candidates who claim to know C++, but I'd like to give the same "test" to everyone.) Should I just focus on trying to get an idea of their level of intelligence? In other words, should I get them to talk and pay attention to the way they articulate their thoughts, and so on?

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• We are moving an Access based corporate front-end into a Web-based App

  - by Max Vernon

  We have an enterprise application with a front end written in Microsoft Access 2003 that has evolved over the past 6 years. The back end data, and a fair amount of back-end logic is contained within several Microsoft SQL Server databases. This front end app consists of around 180 forms, and over 120,000 lines of code, and interacts with VB.Net DLLs that support various critical functions used by our sales force. The current system makes use of 3 monitors to display various information; the Access app uses COM+ to control Microsoft Outlook and Internet Explorer for various purposes. The Access front end sometimes occupies 2 screens, automatically resizing itself based on Windows API-reported screen dimensions. The app also uses a Google map to present data to our agents, and allows two-way interactivity with the map through COM+ connectivity to JavaScript contained in the Google map. At the urging of senior management, we are looking to completely rewrite this application using some web-based technology, such as ASP.Net or perhaps a LAMP stack (the thinking with the LAMP stack thing is "free" is pretty cheap). We want to move to a web-based app so we can eliminate the dependency on our physical location for hiring new sales force members. Currently, our main office is full to capacity, and we need to continue growing the company. Does anyone have any thoughts on what would be the best technology to use for a web-based app of this magnitude? Keeping in mind the app is dependent on back-end services on our existing infrastructure. The app handles financial data and personal customer data, among other things. [I've looked at Best practices for moving large MS Access application towards .Net? and read the answers, and most of the comments. Interesting reading, and has some valid points, but our C.O.O. and contracted Software Architect are pushing for a full web-based app, not a .Net Windows App]

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• Calculate travel time on road map with semaphores

  - by Ivansek

  I have a road map with intersections. At intersections there are semaphores. For each semaphore I generate a red light time and green light time which are represented with syntax [R:T1, G:T2], for example: 119 185 250 A ------- B: [R:6, G:4] ------ C: [R:5, G:5] ------ D I want to calculate a car travel time from A - D. Now I do this with this pseudo code: function get_travel_time(semaphores_configuration) { time = 0; for( i=1; i<path.length;i++) { prev_node = path[i-1]; next_node = path[i]); cost = cost_between(prev_node, next_node) time += (cost/movement_speed) // movement_speed = 50px per second light_times = get_light_times(path[i], semaphore_configurations) lights_cycle = get_lights_cycle(light_times) // Eg: [R,R,R,G,G,G,G], where [R:3, G:4] lights_sum = light_times.green_time+light_times.red_light; // Lights cycle time light = lights_cycle[cost%lights_sum]; if( light == "R" ) { time += light_times.red_light; } } return time; } So for distance 119 between A and B travel time is, 119/50 = 2.38s ( exactly mesaured time is between 2.5s and 2.6s), then we add time if we came at a red light when at B. If we came at a red light is calculated with lines: lights_cycle = get_lights_cycle(light_times) // Eg: [R,R,R,G,G,G,G], where [R:3, G:4] lights_sum = light_times.green_time+light_times.red_light light = lights_cycle[cost%lights_sum]; if( light == "R" ) { time += light_times.red_light; } This pseudo code doesn't calculate exactly the same times as they are mesaured, but the calculations are very close to them. Any idea how I would calculate this?

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• Running CORN job on Ubuntu server for SugarCRM

  - by Logik

  i am pretty inexperienced in Linux.So be descriptive on your answer. My environment :Local Linux server 12.04 hosting Sugar CRM 6.5.2. There is area in sugar CRM called scheduler. I can configured some predefined jobs here. in my case i am trying to run email reminders (ever min/hour/day/month). For this scheduler to be effective, i read some where i need to setup CRON job. So i did some research & finally put following lines in CRONTAB for the root user, as per instructions given in sugarCRM. cd /var/www/crm; php -f cron.php /dev/null 2&1 Well i am creating contracts in my sugarCRM (AOS module) & i want email reminders to be sent for these contracts to the concern person. Now my sugarCRM email is configured correctly & i can send test emails using it. But the CRON + scheduler not giving any result. I can't receive any emails. Then i tried to read /var/log/syslog & it is showing entry for following line each minute. Oct 27 15:03:01 unicomm CRON[28182]: (root) CMD (cd /var/www/crm; php -f cron.php /dev/null 2&1) I've few questions: 1) what does the CRON job line i've added in crontab mean? cd /var/www/crm; php -f cron.php /dev/null 2&1 is not making any sense to me. 2) How am i suppose to get this thing work? I've searched a lot (including SugarCRM forum), but no luck.

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• https:// search results appearing on Google for purely http:// site

  - by hydrurga

  I started weeding through my site's search results from Google today, using a site: search, to determine if there are any links that cause 404s and thus need redirecting. To my amazement I noticed numerous https:// results relating to various pages. My site doesn't have a SSL certificate, doesn't serve such pages, doesn't internally link to https:// pages, doesn't include any such files in its sitemap.xml and, for all of these, never has. I decided to do a Google search for https://<my site> and found one site that incorrectly refers to the root of my site with a https:// prefix - I will try to contact them to get them to correct this. I'm not sure however how Googlebot managed to index the non-root files as https://. I can't find any external links to them and surely, without certification, Googlebot should have stalled at the first request? I've just added the following lines to the site's .htaccess (although the surfer still has to navigate through the browser's "This site is a security risk. Abandon hope all ye who enter here!" message(s) first to get there): RewriteEngine On RewriteCond %{HTTPS} on RewriteRule ^(.*)$ http://www.<my site>.org/$1 [R=301,L] replacing <my site> with my domain name. My big question is this though - I would like to use the Google Webmaster Tools Remove URLs feature to remove the https:// pages from the index. Can I be guaranteed that this will only remove the https:// versions of each relevant page and not the valid http:// versions? My thanks to anyone who can help me out with this particular question and the issue in general.

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• Architecture a for a central renderer rather than self-rendering

  - by The Communist Duck

  For the architectural side of rendering, there's two main ways: having each object render itself, and having a single renderer which renders everything. I'm currently aiming for the second idea, for the following reasons: The list can be sorted to only use shaders once. Else each object would have to bind the shader, because it's not sure if it's active. The objects could be sorted and grouped. Easier to swap APIs. With a few macro lines, it can be easy to swap between a DirectX renderer and an OpenGL renderer (not a reason for my project, but still a good point) Easier to manage rendering code Of course, if anyone has strong recommendations for the first method, I will listen to them. But I was wondering how make this work. First idea The renderer has a list of pointers to the renderable components of each entity, which register themselves on RenderCompoent creation. However, I'm worrying that this may end up as a lot of extra pointer weight. But I can sort the list of pointers every so often. Second idea The entire list of entities is passed to the renderer each render call. The renderer then sorts the list (each call, or maybe once?) and gets what it wants. That's a lot of passing and/or sorting, however. Other ideas ??? PROFIT Anyone got ideas? Thank you.

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• Adjusting the rate of movement of different objects on the same timer

  - by theUg

  I have a series of objects moving along the straight lines. I want to implement slight changes of velocity of each of the object. Constraint is existing model of animation. I am new to this, and not sure if it is the best way to accommodate varying speeds, but what do I know? It is a Java application that repaints the panel every time the timer expires. Timer is set via swing.Timer object that is set by timer delay constant. Every time the game is stepped objects’ coordinates advanced by an increment constant. Most of the objects are of the same class. Is there fairly easy way to refactor existing system to allow changing velocity for an individual object? Is there some obvious common solution I am not aware about? Idea I am having right now is to set timer delay fairly small, and only move objects every so many cycles of animation so that the apparent speed can be adjusted by varying how often they get moved. But that seems fairly involved, and I do not think it is the most elegant solution in terms of performance what with repainting the whole frame every 3-5 milliseconds. Can it be done by advancing the objects so many (varying) times during the certain interval (let’s say 35ms for something like 28fps), and use repaint() method to redraw just individual object? Do I need to mess with pausing animation for smoothness at higher redraw rates? Is it common practise to check for collision at larger step interval, but draw animation a lot more frequently?

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• Pausing and Resuming the jQuery / ASP.NET News Ticker

  Many websites display a news ticker of one sort or another. A news ticker is a user interface element that displays a subset of a list of items, cycling through them one at a time after a set interval. In December 2010 I wrote an article titled Use jQuery and ASP.NET to Build a News Ticker that explored how to create your own news ticker widget using jQuery and ASP.NET. The news ticker's content is defined as an unordered list (<ul>) where each list item (<li>) represents a news headline. Once the ticker's content is defined, having it cycle through the head lines is as simple as calling the JavaScript function startTicker(id, numberToShow, duration), which begins cycling the headlines in the unordered list with the specified id, showing numberToShow headlines at a time and cycling to the next headline every duration number of milliseconds. This installment shows how to enhance the news ticker to enable pausing and resuming. With these enhancements, the ticker can be configured to automatically pause rotating its headlines when the user mouses over it, and to resume rotating them once the user mouses out. Similarly, with a bit of additional markup and script you can add pause and play buttons to a ticker, allowing a user to start and stop the ticker by clicking an image or button. Read on to learn more! Read More >

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• Flow Fields in Dynamics NAV

  - by T

  I don’t know the exact business reason but someone asked how to identify all sales shipping orders with any negative quantities on them.  They needed to print these separately from the shipments that only have all positive quantities. Here is one way to solve this problem In NAV, open Sales Shipment Header Add a field of type Boolean (The field type should match the value you expect to return from the flow field method.  In this case we will use an exist so we expect a bool but we could have used a Sum, Average, Min, Max, Count, or a Lookup to return a value). Define it as a flow field and click on the ellipse next to CalcFormula Now [Has Negative Qty] is false if no negatives exist And [Has Negative Qty] and true if a negative exist So it is ready to be used as a filter on the report. Don’t forget that if you are using it in code, you may need to CalcFields. Hope that helps.  If you really can’t afford the field in your header, you can use code to check the lines for a negative value each time and use a skip or break function to skip that header record but it seems expensive to check them all if you only want a few to print. Please let me know if you think of a better solution.

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• How do you price your work?

  - by Dr.Kameleon

  Well, let me explain : This has really been an issue for me, for such a long time. And what is worse - since coding is something I simply ADORE (I would definitely do it, even if there was no payment involved whatsoever..) - is that I always end up feeling somewhat awkward... Anyway... So, here's the deal : You start working on a project, you may have something in your mind, and even if you're lucky enough and the client needs no "cost estimates" beforehand, sooner or later you'll face the ultimate dilemma of pricing your own work. So, how do YOU do it? By estimating the time you put into it? (obviously, this is not exact, 'coz perhaps a more capable coder will need much less time for the very same thing than a not-so-competent coder + even the very same coder may not "perform" equally at all times) By the Lines of code you've written? (obviously, this is not a measure either : a 10-line script that does exactly the same with a 1000-line script is, at least for me, "better") By taking into account the level of complexity of the project and, perhaps, how specialised the subject is? By taking into account other factors? (e.g. the value of the project for your customer)

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