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  • Manifesto for Integrated Development Environments

    - by Hugo S Ferreira
    Have you recently take a peek at Coda, or Espresso, or Textmate? Or even Google Chrome's Developer Tools? They are well designed, intuitive, interface rich, and extensible. But Coda, Espresso or Textmate, among several, are text editors, not IDEs. On the other side, VIM and Emacs live in the last century, and Eclipse is an overbloated platform. This is more like an outcry for a decent, common infrastructure for REAL IDEs. But there's some questions attached: (i) what features are needed for such a product and (ii) what products are out there that could fullfil this need, and what are they missing. So here's my draft for a manifesto: Manifesto for Integrated Development Environments: We favor interactivity and productivity over syntax and tools. We favor inline, contextual documentation over man and html files. We favor high-definition, graphic-capable color screens over 80x25 character terminals. We favor the use of advanced input schemas over unintuitive keyboard shortcuts. We favor a common, extensible and customizable infrastructure over unmaintained chaintools. We know the difference between search&replace and refactoring. We know the difference between integrated debugging support over a terminal window. We know the difference between semantic-aware code-completion over dumb textual templates. We favor the usage of standards like (E)BNF.

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  • How to securely serve S3 files to blog

    - by Hugo Palma
    I'm starting a blog and i'm in the process of choosing where should i host it. For now i want a free solution like Blogger or Wordpress.com. The problem i'm facing is that i want to use files i have in a S3 bucket in my blog but none of the blog solutions i found supports any kind of server code, which means that in order to use S3 query string authentication i would have to put vulnerable information in the client. For obvious reasons i don't want to do that. So, i'm looking for ideas on how i can safely include content from S3 in a free blog host.

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  • Connect to a MySQL database and count the number of rows.

    - by Hugo
    Hi there! I need to connect to a MySQL database and then show the number of rows. This is what I've got so far; <?php include "connect.php"; db_connect(); $result = mysql_query("SELECT * FROM hacker"); $num_rows = mysql_num_rows($result); echo $num_rows; ?> When I use that code I end up with this error; Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in C:\Documents and Settings\username\Desktop\xammp\htdocs\news2\results.php on line 10 Thanks in advance :D

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  • How does Sentry aggregate errors?

    - by Hugo Rodger-Brown
    I am using Sentry (in a django project), and I'd like to know how I can get the errors to aggregate properly. I am logging certain user actions as errors, so there is no underlying system exception, and am using the culprit attribute to set a friendly error name. The message is templated, and contains a common message ("User 'x' was unable to perform action because 'y'"), but is never exactly the same (different users, different conditions). Sentry clearly uses some set of attributes under the hood to determine whether to aggregate errors as the same exception, but despite having looked through the code, I can't work out how. Can anyone short-cut my having to dig further into the code and tell me what properties I need to set in order to manage aggregation as I would like? [UPDATE 1: event grouping] This line appears in sentry.models.Group: class Group(MessageBase): """ Aggregated message which summarizes a set of Events. """ ... class Meta: unique_together = (('project', 'logger', 'culprit', 'checksum'),) ... Which makes sense - project, logger and culprit I am setting at the moment - the problem is checksum. I will investigate further, however 'checksum' suggests that binary equivalence, which is never going to work - it must be possible to group instances of the same exception, with differenct attributes? [UPDATE 2: event checksums] The event checksum comes from the sentry.manager.get_checksum_from_event method: def get_checksum_from_event(event): for interface in event.interfaces.itervalues(): result = interface.get_hash() if result: hash = hashlib.md5() for r in result: hash.update(to_string(r)) return hash.hexdigest() return hashlib.md5(to_string(event.message)).hexdigest() Next stop - where do the event interfaces come from? [UPDATE 3: event interfaces] I have worked out that interfaces refer to the standard mechanism for describing data passed into sentry events, and that I am using the standard sentry.interfaces.Message and sentry.interfaces.User interfaces. Both of these will contain different data depending on the exception instance - and so a checksum will never match. Is there any way that I can exclude these from the checksum calculation? (Or at least the User interface value, as that has to be different - the Message interface value I could standardise.) [UPDATE 4: solution] Here are the two get_hash functions for the Message and User interfaces respectively: # sentry.interfaces.Message def get_hash(self): return [self.message] # sentry.interfaces.User def get_hash(self): return [] Looking at these two, only the Message.get_hash interface will return a value that is picked up by the get_checksum_for_event method, and so this is the one that will be returned (hashed etc.) The net effect of this is that the the checksum is evaluated on the message alone - which in theory means that I can standardise the message and keep the user definition unique. I've answered my own question here, but hopefully my investigation is of use to others having the same problem. (As an aside, I've also submitted a pull request against the Sentry documentation as part of this ;-)) (Note to anyone using / extending Sentry with custom interfaces - if you want to avoid your interface being use to group exceptions, return an empty list.)

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  • How to query the SPView object

    - by Hugo Migneron
    I have a SPView object that contains a lot of SPListItem objects (there are many fields in the view). I am only interested in one of these fields. Let's call it specialField Given that view and specialField, I want to know if a value is contained in specialField. Here is a way of doing what I want to do : String specialField = "Special Field"; String specialValue = "value"; SPList list = SPContext.Current.Site.RootWeb.Lists["My List"]; SPView view = list.Views["My View"]; //This is the view I want to query SPQuery query = new SPQuery(); query.Query = view.Query; SPListItemCollection items = list.GetItems(query); foreach(SPListItem item in items) { var value = item[specialField]; if(value != null) && (value.ToString() == specialValue) { //My value is found. This is what I was looking for. //break out of the loop or return } } //My value is not found. However, iterating through each ListItem hardly seems optimal, especially as there might be hundreds of items. This query will be executed often, so I am looking for an efficient way to do this. EDIT I will not always be working with the same view, so my solution cannot be hardcoded (it has to be generic enough that the list, view and specialField can be changed.

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  • Check for type of file system in an MSI package

    - by Hugo
    In my MSI package I need to set user rights to a directory using cacls.exe. It works fine in an NTFS environment but fails when run on a Fat32 file system. Is there a method to determine the type of file system of the drive the software is installed to? I'm using WiX 3 to create my MSI package but any hint pointing to the MSI database would help as well. Many thanks in advance.

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  • Poor performance / speed of regex with lookahead

    - by Hugo Zaragoza
    I have been observing extremely slow execution times with expressions with several lookaheads. I suppose that this is due to underlying data structures, but it seems pretty extreme and I wonder if I do something wrong or if there are known work-arounds. The problem is determining if a set of words are present in a string, in any order. For example we want to find out if two terms "term1" AND "term2" are somewhere in a string. I do this with the expresion: (?=.*\bterm1\b)(?=.*\bterm2\b) But what I observe is that this is an order of magnitude slower than checking first just \bterm1\b and just then \bterm2\b This seems to indicate that I should use an array of patterns instead of a single pattern with lookaheads... is this right? it seems wrong... Here is an example test code and resulting times: public static void speedLookAhead() { Matcher m, m1, m2; boolean find; int its = 1000000; // create long non-matching string char[] str = new char[2000]; for (int i = 0; i < str.length; i++) { str[i] = 'x'; } String test = str.toString(); // First method: use one expression with lookaheads m = Pattern.compile("(?=.*\\bterm1\\b)(?=.*\\bterm2\\b)").matcher(test); long time = System.currentTimeMillis(); ; for (int i = 0; i < its; i++) { m.reset(test); find = m.find(); } time = System.currentTimeMillis() - time; System.out.println(time); // Second method: use two expressions and AND the results m1 = Pattern.compile("\\bterm1\\b").matcher(test); m2 = Pattern.compile("\\bterm2\\b").matcher(test); time = System.currentTimeMillis(); ; for (int i = 0; i < its; i++) { m1.reset(test); m2.reset(test); find = m1.find() && m2.find(); } time = System.currentTimeMillis() - time; System.out.println(time); } This outputs in my computer: 1754 150

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  • How to play music on site preventing direct file download

    - by Hugo Palma
    I'm starting a blog with a hosted wordpress instance and i would like to be able to stream music using a flash player on some posts. The problem is that every player i find uses a simple param to get the file url which makes it very easy for someone to find that url and just download the file. A server side solution can be implemented as i have full access to the server.

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  • How to play music on site preventing easy direct file download

    - by Hugo Palma
    I'm starting a blog with a hosted wordpress instance and i would like to be able to stream music using a flash player on some posts. The problem is that every player i find uses a simple param to get the file url which makes it very easy for someone to find that url and just download the file. I know that it's probably impossible to prevent this all together, but i at least don't want it to be obvious. A server side solution can be implemented as i have full access to the server.

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  • Why is the code adding 7 if the number is not >= 0

    - by Hugo Dozois
    I've got this program in MIPS assembly which comes from a C code that does the simple average of the eigth arguments of the function. average8: addu $4,$4,$5 addu $4,$4,$6 addu $4,$4,$7 lw $2,16($sp) #nop addu $4,$4,$2 lw $2,20($sp) #nop addu $4,$4,$2 lw $2,24($sp) #nop addu $4,$4,$2 lw $2,28($sp) #nop addu $2,$4,$2 bgez $2,$L2 addu $2,$2,7 $L2: sra $2,$2,3 j $31 When the number is positve, we directly divided by 8 (shift by 3 bits), but when the number is negative, we first addu 7 then do the division. My question is why do we add 7 to $2 when $2 is not >= 0 ? EDIT : Here is the C code : int average8(int x1, int x2, int x3, int x4, int x5, int x6, int x7, int x8) { return (x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8) / 8; } note : the possible loss in the division since we are using ints instead of floats or doubles is not important in this case.

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  • HTML encode on a XSLT

    - by Hugo Palma
    I would like to convert some value from a XML attribute into valid HTML with entities. So that for example the string "olá" from the XML would be transformed from the XSLT into "ol&#225;" I can't find any xsl function to do this. Any ideas ?

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  • Evaluate column value into rows

    - by Hugo Palma
    I have a column whose value is a json array. For example: [{"att1": "1", "att2": "2"}, {"att1": "3", "att2": "4"}, {"att1": "5", "att2": "6"}] What i would like is to provide a view where each element of the json array is transformed into a row and the attributes of each json object into columns. Keep in mind that the json array doesn't have a fixed size. Any ideas on how i can achieve this ?

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  • file content into unix variable with newlines

    - by Hugo
    I have a text file test.txt with the following content: text1 text2 And I want to assign the content of the file to a UNIX variable but when I do this: testvar=$(cat test.txt) echo $testvar the reult is: text1 text2 instead of text1 text2 Can someone suggest me a solution for this?

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  • jQuery Mobile tap bug : same target twice

    - by hugo
    I'm working on displaying some text in an UIWebView on iOS. I'd like to get the content of the HTML element tapped by the user. If he taps on a paragraph for example, a popup shows the paragraph content. I'm using jQuery Mobile to achieve this. Here's what I'm doing : $('body').tap(function(e) { var tappedElement = $(e.target); alert(tappedElement.text()); }); It works for the first tap. The second tap no matter where it is, returns the same text. The event seems to be ok but the target property of the second tap is wrong. On the third tap all comes back to normal and so on ... What am I missing here ? thx

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  • dropdownlist button kilter ie and mozilla

    - by Hugo Bringas
    i'm having problems with the dropdownlist button.. the buttons looks weird.. here is the image: http://imgur.com/9zHNM here is the html <td class="style 4"> <select name="ctl00$ContentPlaceHolder1$ucPromotions1$ddlCompany" id="ctl00_ContentPlaceHolder1_ucPromotions1_ddlCompany" style="height:25px;width:167px;"> </td> the style 4: .style4 { width: 185px; } what could be the problem?

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  • Steve Jobs explique pourquoi Apple a choisi H.264 au lieu de Theora

    La lettre ouverte de Steve Jobs concernant Flash a fait grand bruit, et, comme on va le voir ici, pas seulement chez les acteurs concernés de près ou de loin par Flash. En effet, Hugo Roy (1), qui se définit lui-même comme étant un "Free Software hacktivist @FSFE" (2) a réagi en postant une lettre ouverte adressée à Steve Jobs (3) dont voici un extrait de la version française de sa lettre (4) Citation: Puis-je vous rappeler que H.264 n?est pas un standard ouvert? Ce codec vidéo est couvert par d...

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  • 2D Tile-based terrian generation

    - by a240
    As a summer project I decided it would be fun to make a flash game. Right now I'm going for something like the look of http://www.terraria.org/. It's been a lot of fun, but today I've hit a snag. I need a way to generate my worlds. I've read up Perlin Noise ( http://freespace.virgin.net/hugo.elias/models/m_perlin.htm ) as a possibility, but I my attempts have given me sporadic looking results. What are some techniques used to generate these 2D tile-based worlds? Ideally I would like to be able to generate mountains, plains, and caves.

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  • How to sort a list in Scala by two fields?

    - by Twistleton
    how to sort a list in Scala by two fields, in this example I will sort by lastName and firstName? case class Row(var firstName: String, var lastName: String, var city: String) var rows = List(new Row("Oscar", "Wilde", "London"), new Row("Otto", "Swift", "Berlin"), new Row("Carl", "Swift", "Paris"), new Row("Hans", "Swift", "Dublin"), new Row("Hugo", "Swift", "Sligo")) rows.sortBy(_.lastName) I try things like this rows.sortBy(_.lastName + _.firstName) but it doesn't work. So I be curious for a good and easy solution. Thanks in advance! Pongo

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  • Dell eSATAp not working with some SATA disks

    - by pistache
    I have a Dell Inspiron XPS 15 (L502X) laptop, with an eSATAp port. I also have a Western Digital 1TB 3"5 SATA drive, that I'd like to use with the laptop. I bought a eSATAp <- SATA 22-pin cable (from Delock). When I use this cable my 3"5 HDD does NOT power up, no spin up. I thought that it's just this HDD taking too much power from the motherboard. However, I tested too with my 2"5 SATA HDD and it works successfully. Now the weird thing is that this 2"5 HDD takes 1.1A at 5V, and that the 3"5 HDD takes 0.7A at 5V. I don't understand why it can't work. Is there anything I could do for it to work ? What is really the problem ? Thanks for your help, Hugo

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  • Oracle OpenWorld São Paulo Is Back!

    - by Kristin Rose
    Guess what’s back and bigger than ever! Oracle OpenWorld São Paulo, and we can’t wait to see YOU there! Be part of the first ever Oracle PartnerNetwork Exchange Latin America, a program that incorporates special activities specifically tailored to you, our partners. OracleOpenWorld Latin America is taking place from December 4th – 6th at the Transamerica Expo Center, so if you haven’t already registered, hurry and do so to take advantage of our Early Bird pricing here! This year’s jam-packed agenda includes keynotes from Hugo Freytes, SVP of Latin America Alliances and Channels, Judson Althoff, SVP of Worldwide Alliances and Channels and many more! The OPN Keynote session will take place on December 5th from 10:00am to 12:00am, and the program will feature four tracks including Applications, Cloud, Engineered Systems and Technology for partners, complete with endless content! Click here to view the Oracle OpenWorld Latin America Oracle PartnerNetwork Agenda. Also, we wanted to offer a huge THANK YOU to our 2012 Oracle PartnerNetwork Exchange Latin America and Lounge sponsors: Avnet and Preteco! Be sure to stop by our Oracle PartnerNetwork Lounge to hold meetings, network with your peers, and engage in relevant conversations with your partners, customers and other industry professionals. Finally, don’t wait to register! Early Bird Pricing for OPN Exchange @ OpenWorld has ends November, 23. You really don't want to miss this great opportunity to learn, network, and be a part of the experience. Register here! Welcome to the new Oracle PartnerNetwork Exchange @ OpenWorld Latin America 2012! The OPN Communications Team

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  • OPN Exchange Keynote On-Demand

    - by kristin.jellison
    We hope everyone has had a chance to refresh and recharge after Oracle OpenWorld 2013. In case you didn’t have the opportunity to catch the full OPN Exchange keynote, we have it on demand for your viewing pleasure. A highlight reel is up on the OPN YouTube channel and on Oracle.com. You can also watch individual keynote segments, from Oracle Executives like Mark Hurd, John Fowler and Andy Bailey, highlighted below. So please, sit back, relax and enjoy the show! You know, in case your football team is on a bye this week. Mark Hurd, President, Oracle Executive Address John Fowler, Executive Vice President, Systems Hardware and Software Engineered to Work Together Joel Borellis, Group Vice President, Partner Enablement Technology, Middleware and Business Intelligence Chris Baker, Senior Vice President, Worldwide ISV,OEM and Java Sales Engineered Systems and Hardware Andy Bailey, Senior Vice President, Strategic Alliances Cloud, Fusion Applications and Customer Experience Thomas LaRocca, Senior Vice President, North America Sales Alliances and Channels Terri Hall, Group Vice President, North America Sales Alliances and Channels Oracle Partner Excellence Awards: North America Hugo Freytes, Senior Vice President, Latin America Alliances and Channels Oracle Partner Excellence Awards: Latin America Mark Lewis, Senior Vice President, APAC Alliances and Channels Hiroshi Watanabe, Senior Vice President, Japan Alliances and Channels Oracle Partner Excellence Awards: APAC and Japan David Callaghan, Senior Vice President, EMEA Alliances and Channels Oracle Partner Excellence Awards: EMEA Cheers! The OPN Communications Team

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  • The current state of a MERGE Destination for SSIS

    - by jamiet
    Hugo Tap asked me on Twitter earlier today whether or not there existed a SSIS Dataflow Destination component that enabled one to MERGE data into a table rather than INSERT it. Its a common request so I thought it might be useful to summarise the current state of play as regards a MERGE destination for SSIS. Firstly, there is no MERGE destination component in the box; that is, when you install SSIS no MERGE Destination will be available. That being said the SSIS team have made available a MERGE destination component via Codeplex which you can get from http://sqlsrvintegrationsrv.codeplex.com/releases/view/19048. I have never used it so cannot vouch for its usefulness although judging by some of the reviews you might not want to set your expectations too high. Your mileage may vary.   In the past it has occurred to me that a built-in way to provide MERGE from the SSIS pipeline would be highly valuable. I assume that this would have to be provided by the database into which you were merging hence in March 2010 I submitted the following two requests to Connect: BULK MERGE (111 votes at the time of writing) [SSIS] BULK MERGE Destination (15 votes) If you think these would be useful feel free to vote them up and add a comment. Lastly, this one is nothing to do with SSIS but if you want to perform a minimally logged MERGE using T-SQL Sunil Agarwal has explained how at Minimal logging and MERGE statement. @Jamiet

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  • Transform coordinates from 3d to 2d without matrix or built in methods

    - by Thomas
    Not to long ago i started to create a small 3D engine in javascript to combine this with an html5 canvas. One of the issues I run into is how can you transform 3d to 2d coords. Since I cannot use matrices or built in transformation methods I need another way. I've tried implementing the next explanation + pseudo code: http://freespace.virgin.net/hugo.elias/routines/3d_to_2d.htm Unfortunately no luck there. I've replace all the input variables with data from my own camera and object classes. I have the following data: An object with a rotation, position vector and an array of 4 3d coords (its just a plane) a camera with a position and rotation vector the viewport - a square 600 x 600 surface. The example uses a zoom factor which I've set as 1 Most hits on google use either matrix calculations or don't implement camera rotation. Basic transformation should be like this: screen.x = x / z * zoom screen.y = y / z * zoom Can anyone point me in the right direction or explain to me howto achieve this? edit: Thanks for all your posts, I haven't been able to apply all this to my project yet but I hope to do this soon.

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