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strange SqlAlchemy update behaviour

- by Max

I'm new to SqlAlchemy and Elixir, so I've started from tutorial and tried to create table, insert a record, and then update it as follows: #'elixir_test.py' from elixir import * metadata.bind = "postgresql://myuser:mypwd@localhost:5432/dbname" metadata.bind.echo = True class Movie(Entity): title = Field(Unicode(30)) year = Field(Integer) description = Field(UnicodeText) def __repr__(self): return '<Movie "%s" (%d)>' % (self.title, self.year) and in another file in the same directory: from elixir_test import * setup_all() #create table create_all() Movie(title=u"Blade Runner", year=1982) #add record session.commit() #get records Movie.query.all() #trying to update record and commit changes, BUT... movie = Movie.query.first() movie.year = 1983 session.commit() #now we have two records in our table, one #with year=1982 and one with year=1983 Movie.query.all() What did I missed?

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Conditionals in Antlr String Templates

- by Pat Long - Munkii Yebee

We are using Antlr StringTemplates to give control over how a Entity's Name is output. The basic Stringtemplate is $FirstName$ $Initial$ $LastName$, $Suffix$, $Degree$ I want to add some smarts to that template so that the commas are only output when necessary i.e. The first comma is only output when there is a Suffix or Degree and the second commas is only output if there is a suffix. I tried the following template string bit it does not work. I guess I have misunderstood $FirstName$ $Initial$ $LastName$ <if(Suffix|Degree)>,<endif>, $Suffix$ <if(Suffix)>,<endif> $Degree$ If it helps we process the templates using this C# StringTemplate stringtemplate = new Antlr.StringTemplate.StringTemplate(template.Data); foreach (Pair<string, string> pair in dictionary) { if (pair.First != null && pair.Second != null) { stringtemplate.SetAttribute(pair.First, pair.Second); } } return stringtemplate.ToString();

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Calculating holidays

- by Ralph Shillington

A number of holidays move around from year to year. For example, in Canada Victoria day (aka the May two-four weekend) is the Monday before May 25th, or Thanksgiving is the 2nd Monday of October (in Canada). I've been using variations on this Linq query to get the date of a holiday for a given year: var year = 2011; var month = 10; var dow = DayOfWeek.Monday; var instance = 2; var day = (from d in Enumerable.Range(1,DateTime.DaysInMonth(year,month)) let sample = new DateTime(year,month,d) where sample.DayOfWeek == dow select sample).Skip(instance-1).Take(1); While this works, and is easy enough to understand, I can imagine there is a more elegant way of making this calculation versus this brute force approach. Of course this doesn't touch on holidays such as Easter and the many other lunar based dates.

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PHP search multidimensional array for value, then place that element at start of array

- by BobFlemming

I need to search this array: cars - [0] -make : Ford -model: Escort -year: 1991 [1] -make: Honda -model: Civic -year: 1996 [2] -make: Vauxhall -model: Astra -year: 1972 And if (for example) the model is "Civic" , place that 'car' at position 0. So the end array would be like: cars - [0] -make: Honda -model: Civic -year: 1996 [1] -make : Ford -model: Escort -year: 1991 [2] -make: Vauxhall -model: Astra -year: 1972 I've tried some usort variations: function typeSort($a, $b) { if ($a['model'] == 'Civic' ) { return 0; } return ($a['model'] < $b['model']) ? -1 : 1; } but this is just returning 1

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rawurlencode() and urlencode() not working in CodeIgniter

- by Keith Chason

I am trying to encode a string into a safe url for generic purposes, and neither rawurlencode() nor urlencode() work when using CodeIgniter. I have used them and they work pefectly fine with straight PHP, but for whatever reason, it doesn't work. I haven't been able to find any others with this problem and thus no solution. Code: <a href="/search/degree/<?=rawurlencode($row->degree)?>" class="element_link"><?=$row->degree?></a>

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How to make <option selected="selected"> set by MySql and PHP?

- by Binyamin

How to make <option selected="selected"> set by MySql and PHP? My code: echo '<select>'; $tempholder = array(); $rs = mysql_query("SELECT * FROM id ORDER BY year"); $nr = mysql_num_rows($rs); for ($i=0; $i<$nr; $i++){ //if($year=$r["year"]){ $selected=' selected="selected"'; }//doesn't work so $r = mysql_fetch_array($rs); if (!in_array($r['year'], $tempholder)){ $tempholder[$i] = $r['year']; echo "<option>".$r["year"]."</option>";//<option$selected>... } } unset($tempholder); echo '</select>';

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How to use string interpolation when rendering templates?

- by Senthil

I found this code in a Rails cookbook. class BlogController < ApplicationController def display_by_date year = params[:year] month = params[:month] day = params[:day] day ='0'+day if day && day.size == 1 @day = day if ( year && month && day ) render(:template => "blog/#{year}/#{month}/#{day}") elsif ( year ) render(:template => "blog/#{year}/list") end end end I'm not sure what to name the templates so the router can find them. Thanks for your help.

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Today what are the major problems of software engineering?

- by Tom Brito

I'm researching for my master's degree...

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Getting MAX_INT from NSDateComponents

- by MattyW

I'm trying to write my first iPhone app, and I'm using a date picker object for the user to enter their date of birth. Part of my app requires the year in int format. I've added the code as below. What's odd is that 'month' gets the right value. But day and year seem to be stuck at MAX_INT (2147483647). Can anyone tell me what I'm doing wrong? -(IBAction)dateOfBirthChanged:(id)sender { NSCalendar* calender = [NSCalendar currentCalendar]; NSDateComponents* dateComponents = [calender components:NSMonthCalendarUnit fromDate:[datepicker date]]; NSInteger day = [dateComponents day]; NSInteger month = [dateComponents month]; NSInteger year = [dateComponents year]; label.text = [NSString stringWithFormat:@"Your year of birth is %d", year]; }

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Making linq avoid using in memory filtering where possible

- by linqmonkey

Consider the these two LINQ2SQL data retrieval methods. The first creates a 'proper' SQL statement that filters the data, but requires passing the data context into the method. The second has a nicer syntax but loads the entire list of that accounts projects, then does in memory filtering. Is there any way to preserve the syntax of the second method but with the performance advantage of the first? public partial class Account { public IQueryable<Project> GetProjectsByYear(LinqDataContext context, int year) { return context.Projects.Where(p => p.AccountID==this.AccountID && p.Year==year).OrderBy(p => p.ProjectNo) } public IQueryable<Project> GetProjectsByYear(int year) { return this.Projects.Where(p => p.Year==year).OrderBy(p => p.ProjectNo).AsQueryable() } }

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how to select and group mysql data based on the follwoing table

- by user1151680

how can I achieve the desired result in mysql if my table looks like this. result|year 1 |2011 2 |2011 1 |2011 0 |2011 1 |2012 2 |2012 1 = Won, 2 = lost, 0 = draw Every year can have multiple values like this. Not sure how I can get the desired result like below. year won lost draw totalPlayed 2011 2 1 1 3 2012 1 1 0 2 I have tried the following query but does not get the desired result select year, league_types.league_name, sum(if(result = 1,1,0)) as won, sum(if(result = 0,1,0)) as draw, sum(if(result = 4,1,0)) as noResult, sum(if(result = 2,1,0)) as lost, sum(if(result = 3,1,0)) as tied, sum(if(result > 0 and result < 4,1,0)) as played from match_score_card inner join fixtures on match_score_card.match_id = fixtures.match_id inner join league_types on fixtures.league_id = league_types.league_id where team_id = 1 group by year order by year desc

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SUM a pair of COUNTs from two tables based on a time variable

- by Kevin O.

Been searching for an answer to this for the better part of an hour without much luck. I have two regional tables laid out with the same column names and I can put out a result list for either table based on the following query (swap Table2 for Table1): SELECT Table1.YEAR, FORMAT(COUNT(Table1.id),0) AS Total FROM Table1 WHERE Table1.variable='Y' GROUP BY Table1.YEAR Ideally I'd like to get a result that gives me a total sum of the counts by year, so instead of: | REGION 1 | | REGION 2 | | YEAR | Total | | YEAR | Total | | 2010 | 5 | | 2010 | 1 | | 2009 | 2 | | 2009 | 3 | | | | | 2008 | 4 | I'd have: | MERGED | | YEAR | Total | | 2010 | 6 | | 2009 | 5 | | 2008 | 4 | I've tried a variety of JOINs and other ideas but I think I'm caught up on the SUM and COUNT issue. Any help would be appreciated, thanks!

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Emperors don’t come cheap

- by RoyOsherove

“Sorry” I replied in a polite email. “Maybe next year, when budgets allow for this”. It was addressed to the organizer of TechEd US, which was to be in New Orleans this year. Man, I would have loved to be in new Orleans this year, but, I guess these guys only understand one language – and I won’t be their puppy any more. You see, they wouldn’t pay for my business class flight to TechEd from Israel. Me– the great emperor of unit testing?! travelling coach for 12 hours? No thanks. I have better things to do! And this is after last year, they only invited me to have one talk throughout the conference. one talk. After the year before I was on the top ten speakers list of that conference?! No sir! They did give it a good try, though. They said they can pay up to 4,000$ per flight cost for me, and that they only found a flight at about 5460$. “Unacceptable” I told them when they asked if I would pay the difference. And that was that. Goodbye teched. As I closed up gmail, wondering if I should have told them that I found a similar flight at 4,300$, and came back to the living room, I told my wife, all full of myself “I just canceled teched”. “Oh good” she said. Not even looking at me as she tried to feed our one year old. “did you tell them you need to cancel because you already have another flight that month and your wife won’t let you travel more than once a month anymore?” “Yeah right” I said. Just what I need – for people to realize I’m totally whipped. I still need an ounce of dignity. “I told those bastards that if they want me they have to make an effort. People like me don’t come cheap, you know?” “You’re an idiot for not telling them the real reason.” She handed me the baby. “What if they found a flight that matches their budget? How would you have gotten away from that engagement?” . She put on “Lost” on the media center and sat next to me. I did not reply.

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Best of “The Moth” 2013

- by Daniel Moth

As previously (2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012) the time has come again to look back over the year’s activities on this blog, and as predicted there were 3 themes 1. It has been just 15 months since I changed role from what at Microsoft we call an “Individual Contributor” (IC) to a managerial role where ICs report to me. Part of being a manager entails sharing career tips with your team and some of those I have put up on my blog over the last year (and hope to continue to next year): Effectiveness and Efficiency, Lead, Follow, or Get out of the way, and Perfect is the enemy of “Good Enough”. 2. It has also been a 15 months that I joined the Visual Studio Diagnostics team, and we have shipped many capabilities in Visual Studio 2013. I helped the members of my team blog about every single one and create videos of many, and then I created a table of contents pointing to all of their blog posts, so if you are interested in what I have been working on over the last year please follow the links from the master blog post here: Visual Studio 2013 Diagnostics Investments. We are busy working on future Visual Studio releases/updates and I will link to those when we are ready… 3. Finally, I used some of my free time (which is becoming eve so scarce) to do some device development and as part of that I shared a few thoughts and code: Debug.Assert replacement for Phone and Store apps, asynchrony is viral, and MyMessageBox for Phone and Store apps. To see what 2014 will bring to this blog, please subscribe using the link on the left… Happy New Year! Comments about this post by Daniel Moth welcome at the original blog.

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Best of "The Moth" 2010

- by Daniel Moth

It is the time again (like in 2004, 2005, 2006, 2007, 2008, 2009) to look back at my blog for the past year and identify areas of interest that seem to be more prominent than others. After doing so, representative posts follow in my top 5 list (in random order). 1. This was the year where I had to move for the first time since 2004 my blog engine (blogger.com –> dasBlog), host provider (zen –> godaddy), web server technology and OS (apache on Linux –> IIS on Windows Server). My goal was not to break any permalinks or the look and feel of this website. A series of posts covered how I achieved that goal, culminating in a tool for others to use if they wanted to do the same: Tool to convert blogger.com content to dasBlog. Going forward I aim to be sharing more small code utilities like that one… 2. At work I am known for being fairly responsive on email, and more importantly never dropping email balls on the floor. This is due to my email processing system, which I shared here: Processing Email in Outlook. I will be sharing more tips with regards to making the best of the Office products. 3. There is no doubt in my mind that this is the year people will remember as the one where Microsoft finally fights back in the mobile space. Even though the new platform means my Windows Mobile book sales will dwindle :-), I am ecstatic about Windows Phone 7 both as a consumer and as a developer. On the release day, to get you started I shared the top 10 Windows Phone 7 developer resources. I will be sharing my tips from my experience in writing code for and consuming this new platform… 4. For my HPC developer friends using Visual Studio, I shared Slides and code for MPI Cluster Debugger and also gave you all the links you need for getting started with Dryad and DryadLINQ from MSR. Expect more from me on cluster development in the coming year… 5. Still in the HPC space, but actually also in the game and even mainstream development, the big disruption and opportunity comes in the form of GPGPU and, on the Microsoft platform, (currently) DirectCompute. Expect more from me on gpgpu development in the coming year… Subscribe via the link on the left to stay tuned for 2011… I wish you a very Happy New Year (with whatever definition of happiness works for you)! Comments about this post welcome at the original blog.

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I’m speaking at Software Architect 2010 in October

- by Eric Nelson

I’m very pleased to report I have managed to slip past the quality police and get to speak for the third year in a row at the excellent Software Architect conference in London. Which makes it the only “long running” conference that I have a 100% record on speaking at year on year which gives it an extra special significance. How much longer before I am found out :) This conference attracts some great speakers including the likes of Kevlin Henney, Neal Ford and Tim Ewald (oh – and me). If you are a software/solution architect then I would definitely recommend you check out whether the sessions this year are something that would help you grow and make great technology/architecture choices in your organisation. I am delivering a brand new session - which means I need to create it :-) 10 things every architect needs to know about Windows Azure In this session we will look at the 10 most architecturally significant features of the Windows Azure platform which directly impact how you architect solutions if you plan to deploy in the Cloud. Maybe see you there…

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Stir Trek: Thor Edition Registration Opens March 17th

- by Brian Jackett

Registration for Stir Trek: Thor Edition opens at 12:00am “Thors"day March 17th. Stir Trek is now in its third year and this is the second year I’ve helped with planning. For those unfamiliar the Stir Trek conference here is the description from the website. Stir Trek is an opportunity to learn about the newest advances and latest trends in Web and Mobile development. There will be 30 Sessions in six tracks, so you can pick the content that interests you the most. And the best part? At the end of the day you will be treated to a private screening of Thor on its opening day! Last year Stir Trek: Iron Man Edition sold out well before the conference and had a long waitlist. Based on CodeMash selling out in just 3.5 days earlier this year I highly recommend you register early. We also have a star studded list of speakers ranging from international experts to local leaders. This will be the best $35 you spend all year. Easter Egg: I originally had an idea that we should start selling tickets at 1:30am rather than 12:00am. If you can figure out why I proposed 1:30am leave a comment below. Any good sleuths will find this riddle elementary. -Frog Out

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Stir Trek: Iron Man Edition Recap and Photos

- by Brian Jackett

If you’ve noticed my blogging activity has reduced in frequency and technical content lately it’s primarily due to all of the conferences I’ve been attending, speaking at, or planning in the past few months. This past Friday myself and six other dedicated individuals put on Stir Trek: Iron Man Edition as the culmination of a few months of hard work. For those unfamiliar, Stir Trek is a web developer conference that was founded last year as an event to showcase content from Microsoft’s MIX conference and end the day with a private showing of the then just-released Star Trek movie. This year’s conference expanded from 2 to 4 content tracks and upped the number of tickets from 350 to 600. Even more amazing was the fact that we had 592 people show up day of the event for the lowest drop-off percentage of any conference I’ve been to before. Nerd Dinner and Swag Bags The night before Stir Trek: Iron Man Edition we hosted a nerd dinner at the Polaris Shopping mall food court with about 30 in attendance. Nerd dinners are a great time to meet others passionate about technology and socialize before the whirlwind of the conference hits. After the nerd dinner 20+ volunteers headed to the conference location and helped us stuff swag bags. This in and of itself was a monumental task of putting together 600 swag bags with numerous leaflets, sponsor items, and t-shirts. A big thanks goes out to all who assisted us that night so that we could finish in just under 2 hours instead of taking all night. My sleep schedule also thanks you. Morning of Stir Trek After getting a decent amount of sleep I arrived at Marcus Crosswoods theater at 6am to begin setting up for the day. Myself and Jody Morgan were in charge of registration so we got tables set up, laid out swag bags, and organized our volunteer crew to assist with checking-in attendees. Despite having 600+ people registration went fairly smoothly and got the day off to a great start. I especially appreciated the 3+ cups of coffee from Crimson Cup, a local coffee shop. For any of you that know me you’ll know that I rarely drink coffee except a few times a year when I really need the energy, so that says a lot about how good their coffee is. Conference Starts Once registration was completed the day kicked off with Molly Holzschlag keynoting. Unfortunately Molly suffered from an ear infection and wasn’t able to fly so she had a virtual keynote and a session later in the day. I was working behind the scenes on various tasks so I was only able to drop in very briefly on the keynote and rest of the morning sessions. Throughout the day I tried to grab at least 1 or 2 pics of each presenter. See my album below for the full set of pics. For lunch we ordered around 150 pizzas from Mellow Mushroom, a local pizza place (notice the theme of supporting local businesses.) Early on we were concerned about Mellow Mushroom being able to supply that many pizzas and get them delivered (still hot) to the theater, but they did an excellent job day of the event. I wish I had gotten some pictures of the old school VW van they delivered the pizza in, but I was just a bit busy running around trying to get theaters ready for lunch. We had attendees from last year who specifically requested that we have Mellow Mushroom supply lunch this year and I’m glad everything worked out being able to use them again. During the afternoon I was able to attend a few sessions and hear some great content from various speakers. It was also nice to just sit down and get off my feet for a bit. After the last sessions the day concluded with a raffle. There were a few logistical and technical issues that hampered our ability to smoothly conduct the raffle. To those of you that agree the raffle wasn’t the smoothest experience I would like to say that the Stir Trek planning committee has already begun meeting to discuss ways of improving the conference for next year. We are also accepting feedback (both positive and negative) at the following link: click here. If you don’t wish to use the Joind In site you can also email me directly and I’ll be sure to pass along the feedback. Iron Man 2 Movie Last but not least, what Stir Trek event would be complete without the feature movie. This year’s movie was Iron Man 2. The theater had some really cool props and promotions (see pic below) for the movie. I really enjoyed Iron Man 2, but I would recommend brushing up on the Iron Man comics and Marvel’s plans for future movies to understand some of the plot elements that come up. Also make sure you stay through to the end of the movie credits to see a sneak peak of something special, that’s all I’ll say. Conclusion Again a big thanks goes out to all of the speakers, sponsors, attendees, movie theater staff, volunteers, and everyone else involved in making this event great. Also big thanks to my fellow Stir Trek planning committee members: Jeff Blankenburg, Matt Casto, Carey Payette, Jody Morgan, Rick Kierner, and Sarah Dutkiewitcz. I am grateful for everything I learned while helping plan this event and look forward to being involved again next year. For those interested we are currently targeting Thor as our movie theme for 2011 and then The Avengers for 2012. These are tentative based on release dates that could shift as we get closer, but for now look solid. Photos Pics on Facebook (includes tagging) Stir Trek: Iron Man Edition photos on Facebook Pics on Live site (higher res) View Full Album -Frog Out

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Query Tuning Mastery at PASS Summit 2012: The Demos

- by Adam Machanic

For the second year in a row, I was asked to deliver a 500-level "Query Tuning Mastery" talk in room 6E of the Washington State Convention Center, for the PASS Summit. ( Here's some information about last year's talk, on workspace memory. ) And for the second year in a row, I had to deliver said talk at 10:15 in the morning, in a room used as overflow for the keynote, following a keynote speaker that didn't stop speaking on time. Frustrating! Last Thursday, after very, very quickly setting up and...(read more)

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Weird 301 redirection by google crawler

- by Ace

I have some pages on my website www.acethem.com which are having 301 redirection but they are not actually 301 redirects. e.g. www.acethem.com/pastpapers/by-year/2007/ is seen as a 301 redirection to www.acethem.com/pastpapers/by-year by google (I am using "Fetch as google" in webmaster tools. Now more weird: My paginated pages with page = 10 are all redirected to homepage: http://www.acethem.com/pastpapers/o-level/chemistry/page/10/ while http://www.acethem.com/pastpapers/o-level/chemistry/page/9/ is working properly in google crawler. Note that all these pages work fine with no redirect in browsers. Sidenote: on www.acethem.com/pastpapers/by-year/2007/, the facebook share button also points to www.acethem.com/pastpapers/by-year/.

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What do you think of the following job specification?

- by m.edmondson

Just received this out of the blue from a recruiter - a number of things stand out to me: PERSON PROFILE Hard working - with a stay until the job in done mentality Thrive on the pressure of tight weekly development deadlines Good attention to detail to ensure bug free development Ability to test all development work from user's perpective Ability to think like a user as well as a developer Good communication skills to understand new funcationality and bugs Flexibility to contribute outside main responsbilities when needed. BENEFITS Salary dependant on skills Contributary Pension with 4% contribution from employer (after 1 year of service) Private Healthcase (after 1 year of service) 20 days holiday + 3-4 days holiday between Christmas and New year - 1 day extra holiday available each quarter you don't have a day off sick (and an additional day if you are not off sick for the whole year ). Would you want to work here? From what I can see they want a work-a-holic who will crawl out of his death bed in order to not lose holiday entitlement.

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Date Time Format in RUBY

- by Madhan ayyasamy

The following snippets is very useful when we render views dates in various format in ruby on rails."Format meaning: %a - The abbreviated weekday name (``Sun'') %A - The full weekday name (``Sunday'') %b - The abbreviated month name (``Jan'') %B - The full month name (``January'') %c - The preferred local date and time representation %d - Day of the month (01..31) %H - Hour of the day, 24-hour clock (00..23) %I - Hour of the day, 12-hour clock (01..12) %j - Day of the year (001..366) %m - Month of the year (01..12) %M - Minute of the hour (00..59) %p - Meridian indicator (``AM'' or ``PM'') %S - Second of the minute (00..60) %U - Week number of the current year, starting with the first Sunday as the first day of the first week (00..53) %W - Week number of the current year, starting with the first Monday as the first day of the first week (00..53) %w - Day of the week (Sunday is 0, 0..6) %x - Preferred representation for the date alone, no time %X - Preferred representation for the time alone, no date %y - Year without a century (00..99) %Y - Year with century %Z - Time zone name %% - Literal ``%'' character t = Time.now t.strftime("Printed on %m/%d/%Y") #=> "Printed on 04/09/2003" t.strftime("at %I:%M%p") #=> "at 08:56AM""Have a great day!

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So long 2010 and Hello 2011

- by AllenMWhite

This has been an interesting year, one in which I had some successes and some failures. It's the first year I really worked "for myself". In the past I've had some periods between jobs where I've done some contracting, but in November 2009 I struck out on my own (with a great business partner in Shawn Upchurch). This first full calendar year in this role had its ups and downs, but overall it's been a success and I'm grateful to Shawn, my clients, and especially to my wife of 30 years, Cindi. The...(read more)

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Nested Classes: A useful tool or an encapsulation violation?

- by Bryan Harrington

So I'm still on the fence as to whether or not I should be using these or not. I feel its an extreme violation of encapsulation, however I find that I am able to achieve some degree of encapsulation while gaining more flexibility in my code. Previous Java/Swing projects I had used nested classes to some degree, However now I have moved into other projects in C# and I am avoid their use. How do you feel about nested classes?

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What does this piece of code in C++ mean? [closed]

- by user1838418

const double pi = 3.141592653589793; const angle rightangle = pi/2; inline angle deg2rad(angle degree) { return degree * rightangle / 90.; } angle function1() { return rightangle * ( ((double) rand()) / ((double) RAND_MAX) - .5 ); } bool setmargin(angle theta, angle phi, angle margin) { return (theta > phi-margin && theta < phi+margin); } Please help me. I'm new to C++

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