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• Silverlight Cream for May 12, 2010 -- #860

  - by Dave Campbell

  In this Issue: Miroslav Miroslavov(-2-), Mike Snow(-2-, -3-), Paul Sheriff, Fadi Abdelqader, Jeremy Likness, Marlon Grech, and Victor Gaudioso. Shoutouts: Andy Beaulieu has a cool WP7 game up and is looking for opinions/comments: Droppy Pop: A Windows Phone 7 Game Karl Shifflett has code and video tutorials up for the app he wrote for the WPF LOB tour he just did: Stuff – WPF Line of Business Using MVVM Video Tutorial From SilverlightCream.com: Flipping panels I had missed this 3rd part of the CompleteIT explanation. In this post Miroslav Miroslavov describes the page flipping they're doing. Great explanation and all the code included. Flying objects against you The 4th part of the CompleteIT explanation is blogged by Miroslav Miroslavov where he is discussing the screen elements 'flying toward' the user. Silverlight Tip of the Day #17 – Double Click Mike Snow's Tip of the Day 17 is showing how to implement mouse double-clicks either for an individual control or for an entire app. Silverlight Tip of the Day #18 – Elastic Scrolling In Mike Snow's Tip of the Day 18, he's talking about and showing some 'elastic' scrolling in his image viewer application. He's asking for opinions and suggestions. Silverlight Tip of the Day #19 – Using Bing Maps in Silverlight Mike Snow's Tips are getting more elaborate :) ... Number 19 is about using the BingMap control in your Silverlight app. Control to Control Binding in WPF/Silverlight Paul Sheriff demonstrates control to control binding... saving a bunch of code behind in the process. Project included. Your First Step to the Silverlight Voice/Video Chatting Client/Server Fadi Abdelqader has a post up at CodeProject using the WebCam and Mic features of Silverlight 4 to setup a voice & video chatting app. MVVM Coding by Convention (Convention over Configuration) Jeremy Likness discusses Convention over Configuration and gives up some good MVVM nuggets along the way... check out his nice long post and grab the source for the project too... and also check out the external links he has in there. MEFedMVVM changes >> from cool to cooler Marlon Grech has refactored MEFedMVVM, and in addition is working with other MVVM framework folks to use some of the same MEF techniques in theirs... code on CodePlex New Silverlight Video Tutorial: How to Create a Silverlight Paging System to Load new Pages In Victor Gaudioso's latest video tutorial he builds a ContentHolder UserControl that will load any page on demand into your MainPage.xaml Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• C#/.NET Little Wonders: Comparer&lt;T&gt;.Default

  - by James Michael Hare

  I’ve been working with a wonderful team on a major release where I work, which has had the side-effect of occupying most of my spare time preparing, testing, and monitoring.  However, I do have this Little Wonder tidbit to offer today. Introduction The IComparable<T> interface is great for implementing a natural order for a data type.  It’s a very simple interface with a single method: 1: public interface IComparer<in T> 2: { 3: // Compare two instances of same type. 4: int Compare(T x, T y); 5: }  So what do we expect for the integer return value?  It’s a pseudo-relative measure of the ordering of x and y, which returns an integer value in much the same way C++ returns an integer result from the strcmp() c-style string comparison function: If x == y, returns 0. If x > y, returns > 0 (often +1, but not guaranteed) If x < y, returns < 0 (often –1, but not guaranteed) Notice that the comparison operator used to evaluate against zero should be the same comparison operator you’d use as the comparison operator between x and y.  That is, if you want to see if x > y you’d see if the result > 0. The Problem: Comparing With null Can Be Messy This gets tricky though when you have null arguments.  According to the MSDN, a null value should be considered equal to a null value, and a null value should be less than a non-null value.  So taking this into account we’d expect this instead: If x == y (or both null), return 0. If x > y (or y only is null), return > 0. If x < y (or x only is null), return < 0. But here’s the problem – if x is null, what happens when we attempt to call CompareTo() off of x? 1: // what happens if x is null? 2: x.CompareTo(y); It’s pretty obvious we’ll get a NullReferenceException here.  Now, we could guard against this before calling CompareTo(): 1: int result; 2:  3: // first check to see if lhs is null. 4: if (x == null) 5: { 6: // if lhs null, check rhs to decide on return value. 7: if (y == null) 8: { 9: result = 0; 10: } 11: else 12: { 13: result = -1; 14: } 15: } 16: else 17: { 18: // CompareTo() should handle a null y correctly and return > 0 if so. 19: result = x.CompareTo(y); 20: } Of course, we could shorten this with the ternary operator (?:), but even then it’s ugly repetitive code: 1: int result = (x == null) 2: ? ((y == null) ? 0 : -1) 3: : x.CompareTo(y); Fortunately, the null issues can be cleaned up by drafting in an external Comparer.  The Soltuion: Comparer<T>.Default You can always develop your own instance of IComparer<T> for the job of comparing two items of the same type.  The nice thing about a IComparer is its is independent of the things you are comparing, so this makes it great for comparing in an alternative order to the natural order of items, or when one or both of the items may be null. 1: public class NullableIntComparer : IComparer<int?> 2: { 3: public int Compare(int? x, int? y) 4: { 5: return (x == null) 6: ? ((y == null) ? 0 : -1) 7: : x.Value.CompareTo(y); 8: } 9: }  Now, if you want a custom sort -- especially on large-grained objects with different possible sort fields -- this is the best option you have.  But if you just want to take advantage of the natural ordering of the type, there is an easier way.  If the type you want to compare already implements IComparable<T> or if the type is System.Nullable<T> where T implements IComparable, there is a class in the System.Collections.Generic namespace called Comparer<T> which exposes a property called Default that will create a singleton that represents the default comparer for items of that type.  For example: 1: // compares integers 2: var intComparer = Comparer<int>.Default; 3:  4: // compares DateTime values 5: var dateTimeComparer = Comparer<DateTime>.Default; 6:  7: // compares nullable doubles using the null rules! 8: var nullableDoubleComparer = Comparer<double?>.Default;  This helps you avoid having to remember the messy null logic and makes it to compare objects where you don’t know if one or more of the values is null. This works especially well when creating say an IComparer<T> implementation for a large-grained class that may or may not contain a field.  For example, let’s say you want to create a sorting comparer for a stock open price, but if the market the stock is trading in hasn’t opened yet, the open price will be null.  We could handle this (assuming a reasonable Quote definition) like: 1: public class Quote 2: { 3: // the opening price of the symbol quoted 4: public double? Open { get; set; } 5:  6: // ticker symbol 7: public string Symbol { get; set; } 8:  9: // etc. 10: } 11:  12: public class OpenPriceQuoteComparer : IComparer<Quote> 13: { 14: // Compares two quotes by opening price 15: public int Compare(Quote x, Quote y) 16: { 17: return Comparer<double?>.Default.Compare(x.Open, y.Open); 18: } 19: } Summary Defining a custom comparer is often needed for non-natural ordering or defining alternative orderings, but when you just want to compare two items that are IComparable<T> and account for null behavior, you can use the Comparer<T>.Default comparer generator and you’ll never have to worry about correct null value sorting again.     Technorati Tags: C#,.NET,Little Wonders,BlackRabbitCoder,IComparable,Comparer

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• Web.NET: A Brief Retrospective

  - by Chris Massey

  It’s been several weeks since I had the pleasure of visiting Milan, and joining 150 enthusiastic web developers for a day of server-side frameworks and JavaScript. Lucky for me, I keep good notes. Overall the day went smoothly, with some solid logistics and very attentiveorganizerss, and an impressively diverse audience drawn by the fact that the event was ambitiously run in English. This was great in that it drew a truly pan-European audience (11 countries were represented on the day, and at least 1 visa had to be procured to get someone there!) It was trouble because, in some cases, it pushed speakers outside their comfort zone. Thankfully, despite a slightly rocky start, every session I attended was very well presented, and the consensus on the day was that the speakers were excellent. While I felt that a lot of the speakers had more that they wanted to cover, the topics were well-chosen, every room constantly had a stack of people in it, and all the sessions were pleasingly focused on code & demos. For all that the language barriers occasionally made networking a little challenging,organizerss Simone & Ugo nailed the logistics. Registration was slick, lunch was plentiful, and session management was great. The very generous Rui was kind enough to showcase a short video about Glimpse in his session, which seemed to go down well (Although the audio in the rooms was a little under-powered). Because I think you might need a mid-week chuckle, here are some out-takes.: And lets not forget the Hackathon. The idea was what having just learned about a stack of interesting technologies, attendees could spend an evening (fuelled by pizza and some good Github beer) hacking something together using them. Unfortunately, after a (great)10-hour day, and in many cases facing international travel in the morning, many of the attendees headed straight for their hotel rooms. This idea could work so beautifully, and I’m excited to see how it pans out in 2013. On top of the slick sessions, getting to finally meet Ugo and Simone in the flesh as a pleasure, as was the serendipitous introduction to the most excellent Rui. They’re all fantastic guys who are passionate about the web, and I’m looking forward to finding opportunities to work with them. Simone & Ugo put on a great event, and I’m excited to see what they do next year.

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• How to deal with fellow programmer who likes to delegate task with lack any support from boss [closed]

  - by Rudy

  I have a problem with my fellow programmer. We are currently working together in a small project that need to be shipped every 2 weeks. She has a tendency to ask for help for every issues that she is facing. Whether it's a compile error, algorithm problem or even sync/merge issue that caused by herself. She does not even bother to check Google or try to find out by herself. I can be asked to help her for 5-10 times a day. Everyday her husband keeps calling (4-6 times a day), and most of the code that has been delivered by her are actually incorrect. Today she framed me for sending the wrong delivery product. She went home after lunch on the delivery day without telling PM and other team member on that day and her code she commited does not work at all. It's not even tested. I have no choice to roll back her code and cleaning her code just for sake to able to run the product. I have warned her about her defective codes for almost 3 iterations. She said when she was not around I should be able to test her module for her. I snapped and yelled that I am not her slave and directly reported to my boss. However, my boss is not a person that can manage and care about software quality. What is the most important thing to my boss is delivery of product, whether it tested or not. He can even asked us to deliver something that not even tested by QA to the client, on the next day. Most of our suggestion is not followed by him. He even asked me to apologize to her because I snapped. I am tired of the whole situation. This kind of thing keeps repeated. I do have saving to be able to survive for 6 months and the idea of resigning is keep haunting. There is nothing else that can be learned in my current job and I had been in a better environment than this. What should I do with the situation?

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• How to return the date value from DatePickerDialog in Android?

  - by user1855222

  I am new to android . I ve created a Date picker in android using following guide .http://developer.android.com/guide/topics/ui/controls/pickers.html public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener { StringBuilder sb = new StringBuilder(); public static String date; @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // Use the current date as the default date in the picker final Calendar c = Calendar.getInstance(); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); int day = c.get(Calendar.DAY_OF_MONTH); // Create a new instance of DatePickerDialog and return it return new DatePickerDialog(getActivity(), this, year, month, day); } public void onDateSet(DatePicker view, int year, int month, int day) { // Do something with the date chosen by the user sb.append(year); sb.append('-'); sb.append(month+1); sb.append('-'); sb.append(day); date = sb.toString(); System.out.println("The date is "+date); } I need to return this date value (date = sb.toString()) to my MainActivity . Since the onDateSet method is void what should I do ? Additional Information - DatePickerDialog Triggers at the MainActivity class ,But not with single button click . There are several processes happens in side a single button , Date picker will triggers only when certain condition is met . I do not want to display the date value either . Just want it returned for further processing. Appreciate any kind of guidance Changed onDataset method and justshow() public void onDateSet(DatePicker view, int year, int month, int day) { // Do something with the date chosen by the user sb.append(year); sb.append('-'); sb.append(month+1); sb.append('-'); sb.append(day); date = sb.toString(); MainActivity.newdate=sb.toString(); System.out.println("The date is "+MainActivity.newdate); } public void justShow(){ System.out.println("The date is "+MainActivity.newdate); } This is the relevant Part From Main(After making changes suggested in first reply ) DateToken mydate=new DateToken(); String test=dayvals.get(0); DialogFragment df=new DatePickerFragment(); if(test.equalsIgnoreCase("day")){ df.show(getSupportFragmentManager(), "DatePik"); } System.out.println("Date is on Main"+newdate); DatePickerFragment dpf=new DatePickerFragment(); dpf.justShow(); newdate is the static String , but still outputs null. In both MainActivity and justShow methods . But in onDataSet method date outputs correctly

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• Different data for different dates

  - by nsw1475

  I am making a web page which will allow users to input and view data for different dates, and to change the date, there are two buttons, one of which will display the previous day, and one which will show the next day. I know that I can do this by submitting forms and reloading the page every time they press one of these buttons, but I would rather use javascript and not have to submit a form, but I am having troubles getting it to work. Currently, I have the two buttons, and the date stored in a PHP variable, as shown in my code below: <script> function init() { <? $nutrDate = $this->parseDate(date('m/d/Y')); ?> } function nutrPrevDay() { <? $nutrDate = mktime(0, 0, 0, date('m',$nutrDate), date('d',$nutrDate)-1, date('Y',$nutrDate)); ?> alert("<? echo(date("m/d/y", $nutrDate)) ?>"); } function nutrNextDay() { <? $nutrDate = mktime(0, 0, 0, date('m',$nutrDate), date('d',$nutrDate)+1, date('Y',$nutrDate)); ?> } window.onload = init; </script> <p style="text-align:center; font-size:14px; color:#03F"> <button onclick="nutrPrevDay()" style="width:200px" >< Show Previous Day</button> <? echo(date('m/d/Y', $nutrDate)) ?> <button onclick="nutrNextDay()" style="width:200px">Show Next Day ></button> </p> I have the alert in the nutrPrevDay() only as debugging. What happens is when I click on the button, the alert shows that the day is correctly decreased (for example from May 17 to May 16), but only decreases one day, and not one day for every click. Also, I do not know how to make the text on the page (created by the line ) change to display the new date after a button is clicked. So here are my questions: 1) Is it possible to dynamically change data (such as text, and in the future, SQL queries) on a page using javascript without having to reload a page when clicking on a button? 2) If possible, how can I make those changes? 3) How can I fix this so that it will increment and decrement through dates every time a button is clicked?

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• Is there any online web application for daily activity logs [closed]

  - by user25

  I am looking for daily calendar-like apps, but ones that have some text editor attached for every day. All I want to do is that when I open that page, it should open the text editor for that day and I could enter some data of what I have accomplished, then save it. The next day I'd like it so when I open the application, then I can go to new page, but I have all of the previous day's data to have a look at what I have done. Something like Google calendar, but I need an associated text editor to paste some notes, stuff, etc. on a daily basis with logs.

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• How do I create multiple instances of Certificate Server on the same Windows installation?

  - by makerofthings7

  The following URLs describe a new feature of Windows Certificate server is the ability to install multiple instances on the same server. (see end of "transcript" link it's a zip file) http://www.digitalsupporttech.com/mskb/896/896733_TechNet_Support_WebCast:_Best_Practices_for_Public_Key_Infrastructure:_Steps_to_build_an_offline_root_certification_authority_%28part_1_of_2%29.htm Quote: "Multiple Certificate Server instances on a single physical server" http://winintro.ru/certsvr.en/html/cf5622e1-daa9-42cc-8b43-14953e34f8b6.htm Quote: "Multiple instances of the Certificate Enrollment Web Service can be installed on a single computer in order to support multiple CAs." Question How can I actually implement multiple CA instances on a Windows 2008R2 server?

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• Anyone know a good mind mapper that works with a scheduler?

  - by GLycan

  TL;DR: Mind mapping tasks to be processed into a schedule based on task metadata. I have all sorts of ideas about what to invest resources (mainly time) in, but when I actually have time to do something I useually end up browsing reddit for not knowing what do to, and the frequancy with which I forget deadlines scares me. I'd love to bring order and structure into my mind, and always know what to do next. So, I want a mind mapping app, where I'd give each branch (types and subtypes of things I want to do) a importance score (if there were two branches, and one had 60 while the other 40, they would respectivily get 60% and 40% of the parent's importance, with the root being 100) and a how soon that branch should be revised/updated (an hobby I want to try out might be checked, say, once a week, while a school subject should be checked once a day) and give each leaf (something I want/need to do) how much time it takes, deadline (if any), and optionally an absolute importance, reoccurrence (guitar practice might repeat once a week), and prerequisites (reading something requires that book (although that could be brought somewhere), coding requires a box, jogging requires being outside) and maybe some other flags, like if it's enjoyable or not. It should either be packaged or working with a schedular app, to which I'd say, look, my day works this way (completely busy from 8 to 9:15, then 15 minutes of being inside with nothing, ..., two hours with box and possibility to go outside, etc), saying that such-and-such pattern is school and happens ever weekday except such-and-such days. The output should be of the form of a schedule, fit for printing or, when I finally get an android, mobile viewing, that schedules tasks with regards to availability of resources and importance (importance being derived from the leaf-task's parent branches), and the set of flags (all work and no play makes me a dull boy). One of these tasks should be reviewing anything that should be updated on that day, including future day layouts (e.g, if the time slots of future days have changed. This should be done every day.) Does anyone know some collection of preferably open-source (or free, or pirateable) tools, or better yet a single one, that accomplishes this task? I know python pretty well, and should be able to write any necessary glue.

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• I have nice headphones. Need a wireless USB microphone so I don't have to switch to a headset to make a call

  - by mattalexx

  Right now, I have a pair of Sennheiser HD595 headphones. They are plugged into a DAC/headphone amp. I spend all day listening to music through them and they sound awesome. Then, for making calls, I have a wireless USB headset from Logitech. Problem is, I can't make calls when I'm wearing my Sennheisers but I wouldn't want to listen to music all day using the Logitech headset. So I spend my day switching in between. So the question is, how can I make calls while wearing the headphones of my choice? One thing I thought of is a wireless USB microphone that I can clip to the Sennheisers. So I'd wear the Sennheisers with this mic all day and ditch the Logitech headset. But it doesn't look like anyone makes a microphone like this. By the way, I would love if the solution didn't transmit the sound of my clacky keyboard or noisy wood flooring.

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• Large quotation marks in Word?

  - by hawbsl

  Is there a simple way in MS Word to get large quotation marks tightly round a paragraph of text, like you might see in print media to mark a quote? If you simply increase the font size of the quote character, it moves too far away from the text it's accompanying. Worse, the first and last lines start to detach from the rest of the paragraph. Here's what I mean (this is Calibri I think): But this is the desired effect (can't do this in Word, had to chop it about in a paint package):

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• Google IO Keynotes Transcript

  - by Midday

  Is there a place where I could find the transcript of google IO 2010 day 1 and/or day 2 transcripts?

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• College network - can I point non-domain student computers to our SUS server?

  - by Joel Coel

  Since I started here 3 months ago, one of the things that's really bothered me about the way this network is setup is something that shows up on the daily bandwidth consumption report. I get a list of top-visited sites by hits and by size, and invariably the top site (to the point that it's bigger than all the other top sites combined) is au.download.windowsupdate.com. We're pulling in ~30GB/day in windows updates. This is every day, not just after a patch Tuesday. After a patch day, it jumps closer to 40GB for a couple days. The key here is that almost none if it is by machines that I'm responsible for. My machines are for the most part fully patched, and when they're not they'll pull from a SUS server, so new updates are downloaded only once. It used to be closer to 50GB/day because most of the machines in our computer labs use DeepFreeze and weren't applying updates correctly, but that's fixed now. So the problem is definitely student-owned machines in the dorms, some of which are re-downloading the same updates in background each day, over and over. I'd love to have these machines start pulling from our SUS server. Then, if they don't ever actually install them at least they're not leeching bandwidth from our public internet connection. Any ideas on how to resolve the situation?

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• How to shedule time machine backup

  - by AntonAL

  Hi, the standard backup interval for Time Machine is 1 hour. In plist-file, i changed it to one day. But, i need more tweak - to launch Time Machine backup at the specified time of day. I prefer making backup, when my work day is completed. How can i customize Time Machine do to so ? Thanks!

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• is it dangerous for the processor core to be *always* loaded at 100%?

  - by javapowered

  In my HFT software I plan to use one core for stock index calculation. That would be simply while(true) loop without any delays which will calculate (sum and multiply) components as often as possible (so millions times per second) and I plan to do that 8 hours per day every day. I was never before loading my computer to 100% full time every day regullary. May it be dangerous? Do processor has kind of "resource" (very big of course) after which it can stopped working?

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• Schedule of Password Expiration to a specific time

  - by elcool

  Is there a way in Windows Server 2003 or 2008 and in Active Directory, to specify in a policy that when a users password expires that day, to have it expire at a certain time, say 4:00am. The issue came up, because the expiration occurs during the middle of the working day, say 9:00am. Then when a user is already logged into Windows in the network, and using different applications, those will start behaving wrongly because of authentication. They have to log out and log back in, in order for Windows to ask for the new password. So, if when they log in early in the morning it would ask for the new password, then they won't have to log back out during the working day. One of the AD Admins said: "Have them check if their password will expire before starting the day".. but really, who does that? And I don't have access to an AD to check these types of policies. So, is this possible?

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• Powershell: Conditionally changing objects in the pipeline

  - by axk

  I'm converting a CSV to SQL inserts and there's a null-able text column which I need to quote in case it is not NULL. I would write something like the following for the conversion: Import-Csv data.csv | foreach { "INSERT INTO TABLE_NAME (COL1,COL2) VALUES ($($_.COL1),$($_.COL2));" >> inserts.sql } But I can't figure out how to add an additional tier into the pipeline to look if COL2 is not equal to 'NULL' and to quote it in such cases. How do I achieve such behavior?

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• automated printouts from a wireless printer

  - by Piotr

  I have a wireless printer which is always on, and an always on fanless linux server. Looking at the mprinter project on Kickstarter I started to wonder if there is an app somewhere in the internet already that will allow to prepare an automated daily printout based on some settings. things to be printed could include - weather forecast for my locations, todo`s scheduled for that day, a "quote of a day" or "word of the day", stats from google analytics for my site, and many more ... I would set a printout at 6:15 every work day so its on my printer when I am already up, having a coffee. anyone knows something that can be used for such purpose? While I know this can be done by combining the power of TeX, cron and a script language to manage the dynamic part of the PDF I believe this is a use case someone has already addressed.

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• Can irssi ignore the 24h dsl-reconnect

  - by mcnesium

  A couple of weeks ago I had to switch my ISP from cable to DSL. Now I have this ridiculous disconnect and reconnect every 24h. It's no big deal insofar as having a new IP address every day, but for one exception. Since I host my irssi screen on a machine inside the LAN, my history gets affected by the reconnect in terms of a topic announcement, the users in each channel, creation date and so on. It's about 10 lines of redundant content every day. This is annoying especially in channels with very little traffic, because you hardly see the actual content in line with the every-day-junk. So I was wondering if I can tell irssi to silently ignore the reconnection details, so that my only meta-content in each channel goes back to "Day changed to ...", like back in the days of cable-internet.

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• Advice on off-site backup of Hyper-V Failover Cluster

  - by Paul McCowat

  We are currently setting up a Server 2008 R2 which will be off-site over a leased line with VPN. At the main site is 2 x Hyper-V hosts in a failover cluster with PowerVault M3000i iSCSI SAN. We are using BackupAssist for local backups and each host backups up itself and it's guests nightly creating a 500GB backup each which is copied to a 2TB rotated NAS drive. Files and SQL DB's are also backed up / log shipped etc. Looking for the best way to backup the Hyper-V VM's and copy them off-site so that the OS's are only a month old and the data is a day old. The main backups are too large to transfer between backups so options discussed so far are: Take rotating individual backups of the VM's each day and copy over, Day 1 SQL VM, Day 2 Exchange VM etc, would require more storage. Look in to Hyper-V snapshots, however don't believe these are supported in clustering. 3rd party replication tools

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• ec2 spot instance for daily processing task

  - by chaft

  I don't have much experience as a sysadmin or with amazon aws, so I hope someone can explain in simple terms or refer me to a good guide on how to achieve the below. I have a system running on ec2 and amazon rds getting data in and saving it to the db. I need to run a script once a day (at the end of the day) to process all that data and prepare a daily report. This process will take approximately an hour to run. It needs to run on a high memory instance.. From what i've read so far, I guess the best way to do it is to have a high memory spot instance run every day, set it up to execute the script on startup and and shut down when done. Is that the right way to do it? If so, how to do it? how to tell the spot instance to run every day? through a cron job on the other server or is there a better way? How to set it up to run the script on startup? through cloudinit? Any help would be appreciated. One last thing, the job is not very time sensitive as long as it runs every day.. thanks

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• Concatenating gziped Apache logs

  - by markdrayton

  We rotate and compress our Apache logs each day but it's become apparent that this isn't frequently enough. An uncompressed log is about 6G, which is getting close to filling our log partition (yep, we'll make it bigger in the future!) as well as taking a lot of time and CPU to compress each day. We have to produce a gziped log for each day for our stats processing. Obviously we could move our logs to a partition with more space but I also want to spread the compression overhead throughout the day. Using Apache's rotatelogs we can rotate and compress the log more often -- hourly, say -- but how can I concatenate all the hourly compressed logs into a running compressed log for the day, without decompressing the previous logs? I don't want to uncompress 24 hours' worth of data and recompress it because that has all the disadvantages of our current solution. Gzip doesn't seem to offer any append or concatenate option but perhaps I've missed something obvious. This question suggests straight shell concatenation "works" in that the archive can be decompressed but that gzip -l doesn't work seems a bit dodgy. Alternatively, perhaps this is still a bad way to do things. Other suggestions are welcome -- our only constraints are our relatively small log partitions and the need to provide a daily compressed log.

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• what is the main cause of 500 internal server error? [closed]

  - by Usman

  I want to know that I have hosted with a hosting company . My website gives "500 Internal server error many times" I have following Web server statistics :- Web Server Statistics Successful requests: 127,310 (7,504) Average successful requests per day: 814 (1,071) Successful requests for pages: 24,949 (1,309) Average successful requests for pages per day: 159 (186) Failed requests: 3,499 (58) Redirected requests: 10,091 (114) Distinct files requested: 5,791 (556) Distinct hosts served: 5,107 (330) Data transferred: 4.28 gigabytes (190.56 megabytes) Average data transferred per day: 28.03 megabytes (27.22 megabytes) Can you tell me my server condition by seeing this or i have to give another details. Thanks in advance

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• What vim features do you use?

  - by Frew

  I spend almost all day programming in vim and I am sure that a lot of you do too. What features do you use that make your day to day coding that much better? One that I use is gv, which will let you reselect the previously selected text. Great for reindenting!

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• Turning a board game idea into a browser based, slow paced gameplay

  - by guillaume31

  Suppose I want to create a strategy game with global mutable state shared between all players (think game board). But unlike a board game, I don't want it to be real time action and/or turn-based. Instead, players should be able to log in at any time of the day and spend a fixed number of action points per day as they wish. As opposed to a few hours, game sessions would run over a few weeks. This is meant to reward good strategy rather than time spent playing (as an alternative, hardcore players could always play multiple games in parallel instead) as well as all kind of issues related to live playing like disconnections and synchronization. The game should remain addictive still have a low time investment footprint for casual players. So far so good, but this still leaves open the question of when to solve actions and when they should be visible. I want to avoid "ninja play" like doing all your moves just a few minutes before daily point reset to take other players by surprise, or people spamming F5 to place a well-timed action which would defeat the whole point of a non real-time game. I thought of a couple of approaches to that : Resolve all events in a single scheduled process running once a day. This basically means a "blind" gameplay where players can take actions but don't see their results immediately. The thing is, I played a similar browser game a few years ago and didn't like the fact that you feel disconnected and powerless until there's that deus ex machina telling you what really happened during all that time. You see the world evolve in large increments of one day, which often doesn't seem like seeing it evolve at all. For actions that have an big impact on the game or on other players (attacks, big achievements), make them visible to everyone immediately but delay their effect by something like 24 hours. Opposing players could be notified when such an event happens, so that they can react to it. Do you have any other ideas how I could go about solving this ? Are there any known approaches in similar existing games ?

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