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• Photoshop alternative with same keyboard shorcuts

  - by user292254

  tldr; Is there a program with the same keyboard shortcuts and/or user interface as PS. I know the "photoshop alternative" question has been asked so many times, but I feel this variant is worth the time to ask. I am a web designer and have been using PS daily on a windows or mac machine for about 10 years, but I do most of my development in linux. The only thing that has been keeping me from the full switch to linux is PS. I have tried many alternatives, including GIMP, but I feel the barrier to entry is too high for one reason and one reason only, the keyboard shortcuts. Over the years I have become very adept and quick in the use of PS because of keyboard shortcuts and muscle memory. I realize that many shortcuts can be customized, but many actions are just too different from PS. So my question is what programs are out there that are the closest to PS in keyboard shortcuts and interface. I don't care if I have to do a bunch of customization to get it as close as possible, but I just can't take too much time to learn a completely new workflow. Of course I realize that any software will take time and effort, I just want to make that time/effort as minimal as possible. Thanks in advance for your responses. edit I should tell you the most important features and workflow I use on a daily basis are, Smart objects, linked documents, save for web and devises.

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• Static pages for large photo album

  - by Phil P

  I'm looking for advice on software for managing a largish photo album for a website. 2000+ pictures, one-time drop (probably). I normally use MarginalHack's album, which does what I want: pre-generate thumbnails and HTML for the pictures, so I can serve without needing a dynamic run-time, so there's less attack surface to worry about. However, it doesn't handle pagination or the like, so it's unwieldy for this case. This is a one-time drop for pictures from a wedding, with a shared usercode/password for distribution to the guests; I don't wish to put the pictures in a third-party hosting environment. I don't wish to use PHP, simply because that's another run-time to worry about, I might relent and use something dynamic if it's Python or Perl based (as I can maintain things written in those). I currently have: Apache serving static files, Album-generated, some sub-directories to divide up the content to be a little more manageable. Something like Album but with pagination already handled would be great, but I'm willing to have something a little more dynamic, if it lets people comment or caption and store the extra data in something like an sqlite DB. I'd want something light-weight, not a full-blown CMS with security updates every three months. I don't want to upload pictures of other peoples' children into a third-party free service where I don't know what the revenue model is. (For my site: revenue is none, costs out of pocket). Existing server hosting is *nix, Apache, some WSGI. Client-side I have MacOS. Any advice?

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• For a large website developed in PHP, is it necessary to have a framework?

  - by Martin

  I am wondering if it is necessary to have a framework or if it is a must-have if I plan to make a large website. Large website could mean a lot of things: in other words, multiple dynamic web pages (40-50 dynamic pages, mysql content) and a lot of visitors (+- a million hits per month). The site will be hosted in a dedicated server environment. I know that it could simplify coding for a developer team, that it includes libraries and a lot of advantages. But I just feel that I don't need that. I think that learning how it works, managing it and installing it would take more time and I could use that time to code. I write PHP the simplest way I could (with performance in mind) and I try to reuse my code/functions/classes most of the time and I make sure that if another developer joins the team, that he won't be lost in the code. I am also planning to use MemCached or another Cache for PHP. As I said, the site will be hosted in a dedicated server environment but will be entirely managed by the hosting company. I am pretty sure the control panel for me to control the basic stuff will be Cpanel. For a developer like me that only knows PHP, Javascript, HTML, CSS, MYSQL and really basic server management, I feel that it seems to complicated to have a framework. Am I wrong? Is it worth the time to learn all about it? Thank you for your opinions and suggestions.

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• How to handle the different frame rate on different devices?

  - by Fenwick

  I am not quite sure how frame per second works on a web page. I have a Canvas game that involves in moving an image from point A to B, and measuring the time elapsed. The code can be as simple as: var timeStamp = Date.now(); function update(){ obj.y += obj.speed; text = "Time: "+ (Date.now() - timeStamp) + "ms"; } The function update() is called every frame. The problem is that the time elapsed is different from device to device. It is pretty short on my PC, but get longer on my iPad, and is much longer on my cell phone. I thought it is because the FPS is smaller on mobile devices, so instead of calling update() every frame, I call it every 1ms by using a setInterval. But this does not solve the problem. In my understanding, the function for setInterval is invoked based on the increment in system time, other than frame rate, so it should fix the problem. Am I missing anything here? If the setInterval function is called based on FPS, is there any way to get around with the FPS difference across devices? On a side note, I have sort of a "water simulator" on the same canvas. It involves in redrawing about 60 objects which can be 600x600 pixels for every frame, so it could be a frame rate killer. I am using Phaser.js but not really using much of its functionalities, if that helps.

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• MVC pattern synchronisation

  - by Hariprasad

  I am facing a problem in synchronizing my model and view threads I have a view which is table. In it, user can select a few rows. I update the view as soon as the user clicks on any row since I don't want the UI to be slow. This updating is done by a logic which runs in the controller thread below. At the same time, the controller will update the model data too, which takes place in a different thread. i.e., controller puts the query in a queue, which is then executed by the model thread - which is a single-threaded interface. As soon as the query executes, controller will get a signal. Now, In order to keep the view and model synchronized, I will update the view again based on the return value of the query (the data returned by model) - even though I updated the view already for that user action. But, I am facing issues because, its taking a lot of time for the model to return the result, by that time user would have performed multiple clicks. So, as a result of updating the view again based on the information from model, the view sometimes goes back to the state in which the previous clicks were made (Suppose user clicks thrice on different rows. I update the view as soon as the click happens. Also, I update the view when I get data back from the model - which is supposed to be same as the already updated state of the view. Now, when the user clicks third time, I get data for the first click from model. As a result, view goes back to a state which is generated by the first click) Is there any way to handle such a synchronization issue?

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• Join Us!! Live Webinar: Using UPK for Testing

  - by Di Seghposs

  Create Manual Test Scripts 50% Faster with Oracle User Productivity Kit  Thursday, March 29, 2012 11:00 am – 12:00 pm ET Click here to register now for this informative webinar. Oracle UPK enhances the testing phase of the implementation lifecycle by reducing test plan creation time, improving accuracy, and providing the foundation for reusable training documentation, application simulations, and end-user performance support—all critical assets to support an enterprise application implementation. With Oracle UPK: Reduce manual test plan development time - Accelerate the testing cycle by significantly reducing the time required to create the test plan. Improve test plan accuracy - Capture test steps automatically using Oracle UPK and import those steps directly to any of these testing suites eliminating many of the errors that occur when writing manual tests. Create the foundation for reusable assets - Recorded simulations can be used for other lifecycle phases of the project, such as knowledge transfer for training and support. With its integration to Oracle Application Testing Suite, IBM Rational, and HP Quality Center, Oracle UPK allows you to deploy high-quality applications quickly and effectively by providing a consistent, repeatable process for gathering requirements, planning and scheduling tests, analyzing results, and managing  issues. Join this live webinar and learn how to decrease your time to deployment and enhance your testing plans today! 

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• PHP Debugging

  - by Bob Porter

  Originally posted on: http://geekswithblogs.net/blogofbob/archive/2013/06/25/php-debugging.aspxI have been experimenting setting up a PHP development environment. I have been trying on Windows, Linux (Ubuntu) and Mac OS X. So far my favorite environment is on Mac OS X. I have tried a number of IDE's and debuggers as well.  IDE's Eclipse with the PDT Add On The PDT version of Eclipse Aptana Zend Netbeans  Debuggers Zend XDebug So far the only environments that I could get running quickly were Zend and Netbeans. Eclipse is a nightmare of versions and capabilities. I could only get Eclipse working well on Windows. On Ubuntu I was able to get the debugger working once. Thats it, one session, then it never worked again. I love the Zend tools and environment and it worked well everywhere I tried it, but it was beyond my budget.  Aptana also worked best on Windows, on Mac OS X it was fragile and I never could get debugging to work.  Netbeans worked first time, every time, every where. With one oddity, after several debugging sessions the debugger would refuse to connect. On every platform, I would end having to reboot to restore debugging, which would then work correctly for quite some time. I am sure I will discover that some process is hanging and there is a less intrusive way to clear the issue, but for now rebooting always works. In a future post I will go over how exactly I set my environment up, for now I have decided to stay with OS X. By the way, I did NOT use MAMP or the Zend Server, I stuck with PHP compiled and built from source, as well as Apache and MySQL installed locally. I use Homebrew as a package manager for OS X. I tried PORT but did not like the fact I had to sudo all the time to use it, and it installed things in /opt which I was not used to. Homebrew does sandbox the apps but it is nice enough to symlink them to their "normal" locations usually in /usr/local.

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• handling multiple interviews / offers [closed]

  - by farble1670

  What's the best way to handle a situation where you have, or expect to have multiple offers? The ideal situation is that your several offers come in about the same time, and you make a choice. this is not how it happens though. You may have an offer, and several near-final interviews lined up for the following days or weeks. One way to handle it would be to ask for a longer time to decide on the first offers you receive. 2 weeks? This gives time to rush the rest of the things you have going through to an end. i question whether asking for 2 weeks to decide is reasonable though. My guess is that an employer would see through that and force your hand. Another way to handle it would be to accept the first offer, and ask for a reasonable period before your start date, then simply "quit" the first position before you ever start if something better comes along. On one hand, employment is at-will, and employers exercise this fact regularly. On the other hand, it seems morally the wrong thing, and has the potential to burn some bridges. And of course the last option is to simply evaluate each offer in isolation, and accept or reject within the given time frame. any thoughts?

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• How do you keep down your urge to learn many things [closed]

  - by devsundar

  One of the difficulties i have is to lower my urge to learn new things (Languages, tools, frameworks etc.). I know it's good to stay the bleeding edge, but at the same time i want to learn things properly. I really see that i need to strike a balance between staying bleeding edge and knowing things properly. For example: Before choosing Arch (Desktop), Ubuntu(Server) and Knoppix(Portable) -- depending on situation -- as favourite distributions. Virtually i have tried all popular linux distributions. You name any popular linux (Redhat, Ubuntu, Arch, Suse, Knoppix, Slax, Slackware) i have tried it for some time. In fact i have spent few years experimenting the operating systems. Before choosing Python, Javascript (nodejs). I have tried all the languages i cameacross Scala, Haskell, Erlang, Ruby, Python, Perl, Scheme. Same applies for database. All popular db RDBMS (Oracle, Mysql, Postgres, SQLite[Favourite] etc) and NoSQL (Mongo, Couch, Neo4j etc.). Advantages i see: We get a overall picture of the technologies/tools/languages. It's useful to select the right tool for the job. We develop a taste and choose the One we like. Disadvantages: I feel that i spend somuch time and see a need to strike a balance. In summary, for e.g. If i see a blog post in HackerNews about CofeeScript i will try it out irrespective of what i am currently learning (Say Haskell). I switch back to learning Haskell, then again i see DART i check it out. And this continues.. Effectively i take more time to learn Haskell, but learnt about other new stuff on the way. The quetion i have is how do you strike a balance between staying bleeding edge and learning properly.

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• Should I go with Java or Python for my next project, after using PHP for 5 years? [closed]

  - by vim

  I have a full-time PHP job and I've been working with PHP for 5 years. I'm not willing to stay within this technology stack any more. I also worked with Java for 2 year before, so for me it looks more obvious to switch back to Java. However during last 5 years I was thinking about starting my own project, and now I think I have a very good SAAS idea. I'm completely confused what technology should I use for my project. I don't want to do it in PHP, and after reading many articles about rapid prototype development it seems to me that Django is the best option. I will continue to work full time for my current employer because I need to pay my bills and will work on my project in my free time. The concern I have is should I do my project in Java or Python? To be realistic there is always a risk when you are doing your own project/start-up. If I do it in Java in the worst case scenario I believe I will be able to find a full time Java position because I already have some experience in Java + recent experience in my project. With regards to Python it looks like it is not very popular in my area and salaries are much more lower then for Java. On the other hand I have a feeling that if I chose Java it will take me a way longer to finish my project. Guys I'm completely confused and I need your advice. P.S. I have moved to London 2 years ago from another country, local guys are very welcome to share their thoughts about London's job market.

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• two guitexture that do not work together

  - by London2423

  I have two GUITexture that move left and right a cube. Is pretty strange but together they don't work. If I activate only one it works. To be more specific: If I have the left GUItexture alone in the game the cube move left. If I have the right GUITexture activated alone the cube move right. Seems all fine I thought but If I have both of them the cube move only right and not left. Where is the mistake? Here is the code inside the GameObject cube for Right move void OnMousedown () { transform.position += Vector3.right * Time.deltaTime; } For Left move void OnMousedown () { transform.position += Vector3.left * Time.deltaTime; } And this is the left GUITexture code //move the cube left Cube.GetComponent<Left> ().enabled = true; left.transform.position += Vector3.left * Time.deltaTime; This is the right GUITexture //move the cube right Cube.GetComponent<Left> ().enabled = true; right.transform.position += Vector3.right * Time.deltaTime; What is the reason for this? I hope someone can help me.

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• Java or Python? Career/Start-up advice needed [closed]

  - by vim

  I have a full-time PHP job and I've been working with PHP for 5 years. As you can guess after spending 5 years I'm not willing to stay within this technology stack any more. I also worked with Java for 2 year before, so for me it looks more obvious to switch back to Java. However during last 5 years I was thinking about starting my own project, and now I think I have a very good SAAS idea. I'm completely confused what technology should I use for my project. I don't want to do it in PHP, and after reading many articles about rapid prototype development it seems to me that Django/Ruby is the best option. I will continue to work full time for my current employer because I need to pay my bills and will work on my project in my free time. The concern I have is should I do my project in Java or Python? To be realistic there is always a risk when you are doing your own project/start-up. If I do it in Java in the worst case scenario I believe I will be able to find a full time Java position because I already have some experience in Java + recent experience in my project. With regards to Python it looks like it is not very popular in my area and salaries are much more lower then for Java. On the other hand I have a feeling that if I chose Java it will take me a way longer to finish my project. Guys I'm completely confused and I need your advice. P.S. I have moved to London 2 years ago from another country, local guys are very welcome to share their thoughts about London's job market.

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• How do you tell if advice from a senior developer is bad?

  - by learnjourney

  Recently, I started my first job as a junior developer and I have a more senior developer in charge of mentoring me in this small company. However, there are several times when he would give me advice on things that I just couldn't agree with (it goes against what I learned in several good books on the topic written by the experts, questions I asked on some Q&A sites also agree with me) and given our busy schedule, we probably have no time for long debates. So far, I have been trying to avoid the issue by listening to him, raising a counterpoint based on what I've learned as current good practices. He raises his original point again (most of the time he will say best practice, more maintainable but just didn't go further), I take a note (since he didn't raise a new point to counter my counterpoint), think about it and research at home, but don't make any changes (I'm still not convinced). But recently, he approached me yet again, saw my code and asked me why haven't I changed it to his suggestion. This is the 3rd time in 2--3 weeks. As a junior developer, I know that I should respect him, but at the same time I just can't agree with some of his advice. Yet I'm being pressured to make changes that I think will make the project worse. Of course as an inexperienced developer, I could be wrong and his way might be better, it may be 1 of those exception cases. My question is: what can I do to better judge if a senior developer's advice is good, bad or maybe it's (good but outdated in today context)? And if it is bad/outdated, what tactics can I use to not implement it his way despite his 'pressures' while maintaining the fact that I respect him as a senior?

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• Testing my model for hybrid scheduling in Embedded Systems

  - by markusian

  I am working on a project for school, where I have to analyze the performances of a few fixed-priority servers algorithms (polling server, deferrable server, priority exchange) using a simulator in the case of hybrid scheduling, where we have both hard periodic tasks and soft aperiodic tasks. In my model I consider that: the hard tasks have a period equal to their deadline, with a known worst case execution time (wcet). The actual execution time could be smaller than the wcet. the soft tasks have a known wcet and random interarrival times. The actual execution time could be smaller than the wcet. In order to test those algorithms I need realistic case studies. For this reason I'm digging in the scientific literature but I am facing different problems: Sometimes I find a list of hard tasks with wcet, but it is not specified how the soft tasks parameters are found. Given the wcet of a task, how can I model its actual execution time? This means, what random distribution should I use considering the wcet? How can I model the random interarrival times of soft aperiodic tasks?

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• How can i compare Audio, what programming language should i use

  - by Pimmetje

  I have 2 audio files that are from almost the same source. But at some points there shifted a bit. Also the codecs does not match. I would like to make a program that takes a sample 2 - 4 seconds. And looks for it in the other file. (Most of the time it's not shifted more than 30 seconds). Than take the time and store it, Go ahead for a few seconds take a sample and find it again. This way i want to create a file where i can see on what points the file is shifted. For people who are more interested in what i want. I have a audio/video file speech and subtitles. But i have same speech from different sources with differs a bit in time. And i like to make a program that can correct the subtitle time for me. Enough about the problem I looked on the Internet for ways to compare audio files. Based on what i read comparing 2 audio files isn't that easy as i had hoped. Some talk about algorithms http://www.perlmonks.org/?node_id=169641 Some audio-library's portaudio.com aubio.org sourceforge.net/projects/ccaudio/ ambiera.com/irrklang/ The biggest problem i have is that i can't find something i can generate from the audio that i can use to compare with. I hope someone here can point me in the right direction.

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• Context switches much slower in new linux kernels

  - by Michael Goldshteyn

  We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to believe. Let me be more specific about the test. We have a program that has two threads. The first thread gets the current time (in ticks using RDTSC) and then signals a condition variable once a second. The second thread waits on the condition variable and wakes up when it is signaled. It then gets the current time (in ticks using RDTSC). The difference between the time in the second thread and the time in the first thread is computed and displayed on the console. After this the second thread waits on the condition variable once more. So, we get a thread to thread signaling latency measurement once a second as a result. In linux 2.6.32, this latency is somewhere on the order of 2.8-3.5 us, which is reasonable. In linux 3.2.0, this latency is somewhere on the order of 40-100 us. I have excluded any differences in hardware between the two host hosts. They run on identical hardware (dual socket X5687 {Westmere-EP} processors running at 3.6 GHz with hyperthreading, speedstep and all C states turned off). We are changing the affinity to run both threads on physical cores of the same socket (i.e., the first thread is run on Core 0 and the second thread is run on Core 1), so there is no bouncing of threads on cores or bouncing/communication between sockets. The only difference between the two hosts is that one is running Ubuntu 10.04 LTS with kernel 2.6.32-28 (the fast context switch box) and the other is running the latest Ubuntu 12.04 LTS with kernel 3.2.0-23 (the slow context switch box). Have there been any changes in the kernel that could account for this ridiculous slow down in how long it takes for a thread to be scheduled to run?

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• How "commercially savvy" should software developers be? [closed]

  - by mattnz

  I have been watching answers to many questions on this site, and have come to the conclusion that commercial pragmatism does not factor into many software development discussions. As a result, I seriously wonder at the commercial skills within the industry, specifically the ability to deliver projects on time and to a budget. I see no indication from the site that commercially successful project delivery is a serious concern, yet the industry has a reputation for poor performance in this. Rarely, if ever, does the cost of time factor into discussions. I have never seen concepts such as opportunity cost, time to market, competitive advantage or cash flow mentioned, let alone discussed in technical answers to questions. How can you answer virtually any question without understanding the commercial background on which it is asked? Even Open source projects have a need to operate efficiently and deploy their limited resources to providing the most value for effort. Typically small start-ups have cash flow issues that outweigh longevity concerns, yet they are typically still advised to build for a future they probably won’t have if they do. Is it fair to say that these problems are solely the Managers and Project managers to solve, or are we, as developers, also responsible for ensuring successful on time, within budget delivery of projects, even if those budgets do not allow use to achieve engineering excellence?

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• VMware Player 5.0 or VMware Workstation 9.0 after upgrade to Ubuntu 12.10

  The upgrade process Upgrading Ubuntu 12.04 to latest version 12.10 - aka Quantal Quetzal - is straight forward and you only need to follow the offical upgrade instructions. Short version on the console looks like this: sudo do-release-upgrade This will update the repository entries, and start the upgrade process. After some minutes or hours of download and installation, you have to reboot your system once to get the new kernel loaded. As time of writing, I'm on '3.5.0-17-generic'. And as with any modification of the kernel version, you have to compile the necessary kernel modules to get VMware Player or Workstation up and running. Usually, this happens the first time you try start your VMware software and that's it. Well, again not so this time. Getting the kernel patch Luckily, the community over VMware is very active and you can get a new kernel patch in the online forums here. Get the download and put in a folder have write permissions. Then you extract the archive on the console like so: tar -xjvf vmware9_kernel35_patch.tar.bz2 Then you change into the newly created folder: cd vmware9_kernel3.5_patch/ And you execute the available shell script as root (superuser) like so: sudo ./patch-modules_3.5.0.sh This will stop any running instances of VMware software, patches the source files and runs the compile process for your active environment. This might take some time depending on your machine, and once completed you can start VMware Player or Workstation as previously. In case that you are going to apply the patch again, the script will simply quit with the following output: /usr/lib/vmware/modules/source/.patched found. You have already patched your sources. Exiting You might remove the .patched file in case that you upgraded/changed your kernel and you need to apply the patch again. Disclaimer: The patch is "as-is" and the patcher is originally created by Artem S. Tashkinov, and later modified by An_tony. Please refer to the VMware forum in case of questions or problems. There are also patches available for older versions of VMware Player or Workstation.

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• There's Not an App for That (Yet)

  - by Mark Hesse

  With an earlier-than-normal departure this morning to avoid the stalemate known as traffic congestion, I suddenly realized what I had failed to grab on my way out the door...  my company ID badge.  Unfortunately, at the time of my epiphany, I was far enough into commuter no-man's land where turning back would completely negate my early departure and increase my overall drive time exponentially.  Not being one to retrace my steps, I decided to press on. Upon arrival at the office and with an hour to go before a security guard would be on duty, I started thinking about the number of times I had forgotten my ID vs. the number of times I had forgotten my phone.  While rare on both accounts, my ID was most likely the missing artifact. I then wondered why there isn't an app for my smartphone that allows me to verify my credentials with my employer and then, provided with a secure token for the day, have the ability to access my building's card entry system.  On many levels, this seems much more secure than an ID card which can be lost, stolen or even forged and then used simply by tailgating into and around buildings at facilities where card scanning can generally be avoided.   As it turns out, another building on the campus has 24 x 7 guard coverage, so I was able to gain access in a relatively short time and secure a temporary ID badge.  Once inside and online, a quick internet search on the subject of smartphone badge access shows that efforts are underway to do exactly what I was thinking needed to be done. Having not spent any time studying about the technology, I discovered that it relies on Near Field Communications (NFC) enabled smartphones (of which, mine does not provide).  The only other option would require modifications to the security infrastructure to support alternative authentication technologies, such as barcode readers, which would be extremely costly to implement. For now, my best option is to put my corporate ID under my car keys... 

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• How to move the rigidbody at the position of the mouse on release

  - by Edvin

  I'm making a "Can Knockdown" game and I need the rigidbody to move where the player released the mouse(OnMouseUp). Momentarily the Ball moves OnMouseUp because of rigidbody.AddForce(force * factor); and It moves toward the mousePosition but doesn't end up where the mousePosition is. Here's what I have so far in the script. var factor = 20.0; var minSwipeDistY : float; private var startTime : float; private var startPos : Vector3; function OnMouseDown(){ startTime = Time.time; startPos = Input.mousePosition; startPos.z = transform.position.z - Camera.main.transform.position.z; startPos = Camera.main.ScreenToWorldPoint(startPos); } function OnMouseUp(){ var endPos = Input.mousePosition; endPos.z = transform.position.z - Camera.main.transform.position.z; endPos = Camera.main.ScreenToWorldPoint(endPos); var force = endPos - startPos; force.z = force.magnitude; force /= (Time.time - startTime); rigidbody.AddForce(force * factor); }

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• a c++ code for scheduling tasks [closed]

  - by scheduling

  This code has no errors but then when i execute it, there is no output and the program automatically shuts down saying the program has stopped working. #include<unistd.h> #include<stdio.h> #include<stdlib.h> #include<time.h> #include<string.h> int main() { char *timetoken; char currtime[7]; char schedtime[7]; int i; struct tm *localtimeptr; strcpy(schedtime,"15:25:00"); while(6!=9) { time_t lt; sleep(1); lt = time(NULL); localtimeptr = localtime(lt); timetoken=strtok(asctime(localtimeptr)," "); for(i=1;i<5;i++) timetoken=strtok('\0'," "); if(i==3) { strcpy(currtime,timetoken); } } printf("The current time is: %s\n",currtime); printf("We are waiting for: %s\n",schedtime); if(!strcmp(currtime,schedtime)) { printf("Time to do stuff \n"); system("C:\PROJECT X"); } getch(); return 0; }

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• ???????????/??????????????????|WebLogic Channel|??????

  - by ???02

  ?WebLogic Server???????????????????――???????WebLogic Server???????????????1???????????????????????????????????·????????????????????2011?11????????Oracle DAB & Developers Days 2011??????????????????????????WebLogic Server???????????????????????????????????????????????/?????????????????????????(???)????????????3??????????????????――??????????????????2????????·????????3??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????????????????????????????????????????8?????????????????5???????3??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　??????????300~3,500?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????·????????????????????????????????????????????????????¦???????????·??????????――?????·??????·???????????WebLogic?????　???????????????300??????????????????????????????????????????????????300???????????????????????????????????????????????????????????????????????????????(??????500???)???????????????????????????????????????????????????????????????????·??????????????????????????????????????¦????????????WebLogic Server - ???????·???????????4???????????????????????――????????????　????????????????????????????????????????????????JDBC???????????????????JDBC??????????????????????JDBC?????????????????????????????????????????????????????????　??????????????????????????????????300????????500????????0????????100????????????????????????????????????????????????????????0???????????????????????????????????????????????????????????　?????????????????????????????????????????????????????????JDBC????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????·?????????????????????????????¦?????Pick-Up???????WebLogic Server JDBC???·???????(10.3.4)　?????????????????????????????????????????????????????????????????????????????　??????????????????????????????????????????300?????????????????100???????????????????????????????????????????????????????????????????????????0???????????????????????????????????????????????????????????????????????????????????????????????　????1????1????????????????????????????????????(???????????????)???????????????????????????????????????????????????????????????????　???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????????????????JDBC??????????????????????????????????JDBC???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????·????????????????????????????????????????????????????????????????MBean???????WebLogic Server????????　?????????????????????????????MBean????????????　??????????????MBean??????????????MBean???????????????????PendingUserRequestCount)??????????????????????·?????(ExecuteThreadIdleCount)????·??????????????????????·?????(StandbyThreadCount)?????????????????????·?????????????????(ExecuteThreadTotalCount)??????????????????????????????????????????????????????=????????-??????·??????-?????·????? ?　????????????MBean??????????????MBean???????????????(ActiveConnectionsCurrentCount)?????????????????????????????????????(ActiveConnectionsHighCount)????????????????????????????????????????????????????????????(WaitingForConnectionCurrentCount)?????????????????????????????(WaitingForConnectionHighCount)?????????????????????????????????????????????(?)(WaitSecondsHighCount)????????????????????????????????????　????????????????????????WebLogic Server????????????????????????　???????MBean????????WebLogic Server????????????????????WebLogic Scripting Tool(WLST)?????????????????????????????????????WLST????????????connect('weblogic','welcome1','t3://localhost:7001')import timeimport tracebackserverRuntime()print "Day,Time,State,CurrCapacity,ActiveConnectionsCurrentCount,WaitingForConnectionCurrentCount"while(true): try: oJDBCDataSourceRuntime = getMBean('JDBCServiceRuntime/<????>/JDBCDataSourceRuntimeMBeans/<???????>') oState = oJDBCDataSourceRuntime.getState() oCurrCapacity = oJDBCDataSourceRuntime.getCurrCapacity() oActiveConnectionsCurrentCount = oJDBCDataSourceRuntime.getActiveConnectionsCurrentCount() oWaitingForConnectionCurrentCount = oJDBCDataSourceRuntime.getWaitingForConnectionCurrentCount() print time.strftime('%Y-%m-%d,%H:%M:%S') + "," + str(oState) + "," + str(oCurrCapacity) + "," + str(oActiveConnectionsCurrentCount) + "," + str(oWaitingForConnectionCurrentCount) time.sleep(1) except: print "<<<error>>>" traceback.print_exc() disconnect() break　?????????test.py??????/????????????????$ java weblogic.WLST test.py...?...Day,Time,State,CurrCapacity,ActiveConnectionsCurrentCount,WaitingForConnectionCurrentCount2011-10-31,22:39:01,Running,10,0,02011-10-31,22:39:02,Running,10,0,02011-10-31,22:39:03,Running,12,9,02011-10-31,22:39:04,Running,22,18,02011-10-31,22:39:05,Running,29,15,02011-10-31,22:39:06,Running,29,14,02011-10-31,22:39:07,Running,16,15,02011-10-31,22:39:08,Running,19,15,02011-10-31,22:39:09,Running,19,15,02011-10-31,22:39:10,Running,19,14,02011-10-31,22:39:11,Running,19,15,02011-10-31,22:39:12,Running,19,14,02011-10-31,22:39:13,Running,19,0,0　WLST??????WebLogic Channel?????????·???????! ?WebLogic Scripting Tool????WebLogic Server???/?????????????????????????????????????¦????????·???????! ?WebLogic Scripting Tool????WebLogic Server???/???????¦Oracle DAB & Developers Days 2011????????????????????WebLogic Server??????????????

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• Advice on my jQuery Ajax Function

  - by NessDan

  So on my site, a user can post a comment on 2 things: a user's profile and an app. The code works fine in PHP but we decided to add Ajax to make it more stylish. The comment just fades into the page and works fine. I decided I wanted to make a function so that I wouldn't have to manage 2 (or more) blocks of codes in different files. Right now, the code is as follows for the two pages (not in a separate .js file, they're written inside the head tags for the pages.): // App page $("input#comment_submit").click(function() { var comment = $("#comment_box").val(); $.ajax({ type: "POST", url: "app.php?id=<?php echo $id; ?>", data: {comment: comment}, success: function() { $("input#comment_submit").attr("disabled", "disabled").val("Comment Submitted!"); $("textarea#comment_box").attr("disabled", "disabled") $("#comments").prepend("<div class=\"comment new\"></div>"); $(".new").prepend("<a href=\"profile.php?username=<?php echo $_SESSION['username']; ?>\" class=\"commentname\"><?php echo $_SESSION['username']; ?></a><p class=\"commentdate\"><?php echo date("M. d, Y", time()) ?> - <?php echo date("g:i A", time()); ?></p><p class=\"commentpost\">" + comment + "</p>").hide().fadeIn(1000); } }); return false; }); And next up, // Profile page $("input#comment_submit").click(function() { var comment = $("#comment_box").val(); $.ajax({ type: "POST", url: "profile.php?username=<?php echo $user; ?>", data: {comment: comment}, success: function() { $("input#comment_submit").attr("disabled", "disabled").val("Comment Submitted!"); $("textarea#comment_box").attr("disabled", "disabled") $("#comments").prepend("<div class=\"comment new\"></div>"); $(".new").prepend("<a href=\"profile.php?username=<?php echo $_SESSION['username']; ?>\" class=\"commentname\"><?php echo $_SESSION['username']; ?></a><p class=\"commentdate\"><?php echo date("M. d, Y", time()) ?> - <?php echo date("g:i A", time()); ?></p><p class=\"commentpost\">" + comment + "</p>").hide().fadeIn(1000); } }); return false; }); Now, on each page the box names will always be the same (comment_box and comment_submit) so what do you guys think of this function (Note, the postComment is in the head tag on the page.): // On the page, (profile.php) $(function() { $("input#comment_submit").click(function() { postComment("profile", "<?php echo $user ?>", "<?php echo $_SESSION['username']; ?>", "<?php echo date("M. d, Y", time()) ?>", "<?php echo date("g:i A", time()); ?>"); }); }); Which leads to this function (which is stored in a separate file called functions.js): function postComment(page, argvalue, username, date, time) { if (page == "app") { var arg = "id"; } if (page == "profile") { var arg = "username"; } var comment = $("#comment_box").val(); $.ajax({ type: "POST", url: page + ".php?" + arg + "=" + argvalue, data: {comment: comment}, success: function() { $("textarea#comment_box").attr("disabled", "disabled") $("input#comment_submit").attr("disabled", "disabled").val("Comment Submitted!"); $("#comments").prepend("<div class=\"comment new\"></div>"); $(".new").prepend("<a href=\"" + page + ".php?" + arg + "=" + username + "\" class=\"commentname\">" + username + "</a><p class=\"commentdate\">" + date + " - " + time + "</p><p class=\"commentpost\">" + nl2br(comment) + "</p>").hide().fadeIn(1000); } }); return false; } That's what I came up with! So, some problems: When I hit the button the page refreshes. What fixed this was taking the return false from the function and putting it into the button click. Any way to keep it in the function and have the same effect? But my real question is this: Can any coders out there that are familiar to jQuery tell me techniques, coding practices, or ways to write my code more efficiently/elegantly? I've done a lot of work in PHP but I know that echoing the date may not be the most efficient way to get the date and time. So any tips that can really help me streamline this function and also make me better with writing jQuery are very welcome!

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• Node.js vs PHP processing speed

  - by Cody Craven

  I've been looking into node.js recently and wanted to see a true comparison of processing speed for PHP vs Node.js. In most of the comparisons I had seen, Node trounced Apache/PHP set ups handily. However all of the tests were small 'hello worlds' that would not accurately reflect any webpage's markup. So I decided to create a basic HTML page with 10,000 hello world paragraph elements. In these tests Node with Cluster was beaten to a pulp by PHP on Nginx utilizing PHP-FPM. So I'm curious if I am misusing Node somehow or if Node is really just this bad at processing power. Note that my results were equivalent outputting "Hello world\n" with text/plain as the HTML, but I only included the HTML as it's closer to the use case I was investigating. My testing box: Core i7-2600 Intel CPU (has 8 threads with 4 cores) 8GB DDR3 RAM Fedora 16 64bit Node.js v0.6.13 Nginx v1.0.13 PHP v5.3.10 (with PHP-FPM) My test scripts: Node.js script var cluster = require('cluster'); var http = require('http'); var numCPUs = require('os').cpus().length; if (cluster.isMaster) { // Fork workers. for (var i = 0; i < numCPUs; i++) { cluster.fork(); } cluster.on('death', function (worker) { console.log('worker ' + worker.pid + ' died'); }); } else { // Worker processes have an HTTP server. http.Server(function (req, res) { res.writeHead(200, {'Content-Type': 'text/html'}); res.write('<html>\n<head>\n<title>Speed test</title>\n</head>\n<body>\n'); for (var i = 0; i < 10000; i++) { res.write('<p>Hello world</p>\n'); } res.end('</body>\n</html>'); }).listen(80); } This script is adapted from Node.js' documentation at http://nodejs.org/docs/latest/api/cluster.html PHP script <?php echo "<html>\n<head>\n<title>Speed test</title>\n</head>\n<body>\n"; for ($i = 0; $i < 10000; $i++) { echo "<p>Hello world</p>\n"; } echo "</body>\n</html>"; My results Node.js $ ab -n 500 -c 20 http://speedtest.dev/ This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking speedtest.dev (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Finished 500 requests Server Software: Server Hostname: speedtest.dev Server Port: 80 Document Path: / Document Length: 190070 bytes Concurrency Level: 20 Time taken for tests: 14.603 seconds Complete requests: 500 Failed requests: 0 Write errors: 0 Total transferred: 95066500 bytes HTML transferred: 95035000 bytes Requests per second: 34.24 [#/sec] (mean) Time per request: 584.123 [ms] (mean) Time per request: 29.206 [ms] (mean, across all concurrent requests) Transfer rate: 6357.45 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.2 0 2 Processing: 94 547 405.4 424 2516 Waiting: 0 331 399.3 216 2284 Total: 95 547 405.4 424 2516 Percentage of the requests served within a certain time (ms) 50% 424 66% 607 75% 733 80% 813 90% 1084 95% 1325 98% 1843 99% 2062 100% 2516 (longest request) PHP/Nginx $ ab -n 500 -c 20 http://speedtest.dev/test.php This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking speedtest.dev (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Finished 500 requests Server Software: nginx/1.0.13 Server Hostname: speedtest.dev Server Port: 80 Document Path: /test.php Document Length: 190070 bytes Concurrency Level: 20 Time taken for tests: 0.130 seconds Complete requests: 500 Failed requests: 0 Write errors: 0 Total transferred: 95109000 bytes HTML transferred: 95035000 bytes Requests per second: 3849.11 [#/sec] (mean) Time per request: 5.196 [ms] (mean) Time per request: 0.260 [ms] (mean, across all concurrent requests) Transfer rate: 715010.65 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.2 0 1 Processing: 3 5 0.7 5 7 Waiting: 1 4 0.7 4 7 Total: 3 5 0.7 5 7 Percentage of the requests served within a certain time (ms) 50% 5 66% 5 75% 5 80% 6 90% 6 95% 6 98% 6 99% 6 100% 7 (longest request) Additional details Again what I'm looking for is to find out if I'm doing something wrong with Node.js or if it is really just that slow compared to PHP on Nginx with FPM. I certainly think Node has a real niche that it could fit well, however with these test results (which I really hope I made a mistake with - as I like the idea of Node) lead me to believe that it is a horrible choice for even a modest processing load when compared to PHP (let alone JVM or various other fast solutions). As a final note, I also tried running an Apache Bench test against node with $ ab -n 20 -c 20 http://speedtest.dev/ and consistently received a total test time of greater than 0.900 seconds.

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• matplotlib and python multithread file processing

  - by Napseis

  I have a large number of files to process. I have written a script that get, sort and plot the datas I want. So far, so good. I have tested it and it gives the desired result. Then I wanted to do this using multithreading. I have looked into the doc and examples on the internet, and using one thread in my program works fine. But when I use more, at some point I get random matplotlib error, and I suspect some conflict there, even though I use a function with names for the plots, and iI can't see where the problem could be. Here is the whole script should you need more comment, i'll add them. Thank you. #!/usr/bin/python import matplotlib matplotlib.use('GTKAgg') import numpy as np from scipy.interpolate import griddata import matplotlib.pyplot as plt import matplotlib.colors as mcl from matplotlib import rc #for latex import time as tm import sys import threading import Queue #queue in 3.2 and Queue in 2.7 ! import pdb #the debugger rc('text', usetex=True)#for latex map=0 #initialize the map index. It will be use to index the array like this: array[map,[x,y]] time=np.zeros(1) #an array to store the time middle_h=np.zeros((0,3)) #x phi c #for the middle of the box current_file=open("single_void_cyl_periodic_phi_c_middle_h_out",'r') for line in current_file: if line.startswith('# === time'): map+=1 np.append(time,[float(line.strip('# === time '))]) elif line.startswith('#'): pass else: v=np.fromstring(line,dtype=float,sep=' ') middle_h=np.vstack( (middle_h,v[[1,3,4]]) ) current_file.close() middle_h=middle_h.reshape((map,-1,3)) #3d array: map, x, phi,c ##### def load_and_plot(): #will load a map file, and plot it along with the corresponding profile loaded before while not exit_flag: print("fecthing work ...") #try: if not tasks_queue.empty(): map_index=tasks_queue.get() print("----> working on map: %s" %map_index) x,y,zp=np.loadtxt("single_void_cyl_growth_periodic_post_map_"+str(map_index),unpack=True, usecols=[1, 2,3]) for i,el in enumerate(zp): if el<0.: zp[i]=0. xv=np.unique(x) yv=np.unique(y) X,Y= np.meshgrid(xv,yv) Z = griddata((x, y), zp, (X, Y),method='nearest') figure=plt.figure(num=map_index,figsize=(14, 8)) ax1=plt.subplot2grid((2,2),(0,0)) ax1.plot(middle_h[map_index,:,0],middle_h[map_index,:,1],'*b') ax1.grid(True) ax1.axis([-15, 15, 0, 1]) ax1.set_title('Profiles') ax1.set_ylabel(r'$\phi$') ax1.set_xlabel('x') ax2=plt.subplot2grid((2,2),(1,0)) ax2.plot(middle_h[map_index,:,0],middle_h[map_index,:,2],'*r') ax2.grid(True) ax2.axis([-15, 15, 0, 1]) ax2.set_ylabel('c') ax2.set_xlabel('x') ax3=plt.subplot2grid((2,2),(0,1),rowspan=2,aspect='equal') sub_contour=ax3.contourf(X,Y,Z,np.linspace(0,1,11),vmin=0.) figure.colorbar(sub_contour,ax=ax3) figure.savefig('single_void_cyl_'+str(map_index)+'.png') plt.close(map_index) tasks_queue.task_done() else: print("nothing left to do, other threads finishing,sleeping 2 seconds...") tm.sleep(2) # except: # print("failed this time: %s" %map_index+". Sleeping 2 seconds") # tm.sleep(2) ##### exit_flag=0 nb_threads=2 tasks_queue=Queue.Queue() threads_list=[] jobs=list(range(map)) #each job is composed of a map print("inserting jobs in the queue...") for job in jobs: tasks_queue.put(job) print("done") #launch the threads for i in range(nb_threads): working_bee=threading.Thread(target=load_and_plot) working_bee.daemon=True print("starting thread "+str(i)+' ...') threads_list.append(working_bee) working_bee.start() #wait for all tasks to be treated tasks_queue.join() #flip the flag, so the threads know it's time to stop exit_flag=1 for t in threads_list: print("waiting for threads %s to stop..."%t) t.join() print("all threads stopped")

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