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  • Google I/O 2010 Keynote, pt. 1

    Google I/O 2010 Keynote, pt. 1 Video footage from Day 1 keynote at Google I/O 2010 For Google I/O session videos, presentations, developer interviews and more, go to: code.google.com/io From: GoogleDevelopers Views: 2 0 ratings Time: 10:07 More in Science & Technology

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  • In what order does the Asset-Pipeline in Ruby on Rails load JavaScript Files? [on hold]

    - by psycatham
    So, when I decided to remove the tags <script></script> and benefit from the asset-pipeline instead, complications took place. I am working with Google Maps' API V3, and to benefit from their functions and objects that their code provides, you have load the link first <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&libraries=places"></script> Basically, If I put this line before their code, and put their code in script tags, things work out pretty perfecty, but when I use javascript_include_tag instead of script tag in html and copy my code to the file I pointed at -Like This - <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&libraries=places"></script> <%=javascript_include_tag "map_new_marker_drag"%> , the asset-pipeline seems to load That file before loading the link of Google Maps API, thus I get the error : - Uncaught ReferenceError : google is undefined I tried putting the link in javascript_include_tag too -Like this- <%=javascript_include_tag "https://maps.googleapis.com/maps/api/js?v=3.exp&libraries=places" %> <%=javascript_include_tag "map_new_marker_drag"%> , and it generated this <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&amp;libraries=places"></script> <script src="https://maps.gstatic.com/cat_js/intl/en_us/mapfiles/api-3/17/2/%7Bmain,places%7D.js" type="text/javascript"></script> <script src="/assets/map_new_marker_drag.js?body=1"></script> and the same error Uncaught ReferenceError : google is undefined. Do I have to put it in another order? what am I missing about the asset-pipeline mechanisms? What should I do to make the link load before the code so to benefit from their objects and get rid of the error? PS : I tried using jquery functions and so , but I seem not to make it happen. If you still think this is a proper solution, please provide me some code I can use this is the jquery function I used jQuery(function($) { // Asynchronously Load the map API var script = document.createElement('script'); script.src = "http://maps.googleapis.com/maps/api/js?sensor=false&callback=initialize"; document.body.appendChild(script); var scriptTwo = document.createElement('script'); scriptTwo.src = "https://maps.googleapis.com/maps/api/js?v=3.exp&libraries=places"; document.body.appendChild(scripTwo); });

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  • Macro vs. Static functions in Header

    - by wirrbel
    for a lot of quick tasks where one could employ a function f(x,y), in plain C, macros are used. I would like to ask specifically about these cases, that are solvable by a function call (i.e. macros used for inlining functions, not for code expansion of arbitrary code). Typically C functions are not inlined since they might be linked to from other C files. However, static C functions are only visible from within the C file they are defined in. Therefore they can be inlined by compilers. I have heard that a lot of macros should be replaced by turning them into static functions, because this produces safer code. Are there cases where this is a not good idea? Again: Not asking about Code-Production macros with ## alike constructs that cannot at all be expressed as a function.

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  • J2ObjC : l'outil de portage de Java vers Objective-C de Google vient d'être mis en ligne, il est open-source

    Google sort J2ObjC un outil open source pour la conversion du code Java en Objective-C Bonne nouvelle pour les développeurs Java qui souhaitent cibler iOS sans toutefois se mettre à l'Objective-C. Google vient de publier sur son blog dédié aux outils open source une application pour la conversion du code Java en code Objective-C. Le projet J2ObjC a pour objectif de permettre aux développeurs de partager facilement du code qui n'est pas utilisé pour l'interface utilisateur (logique métier, accès aux données, etc.) pour les applications Android, les applications Web (qui utilisent le serveur GWT) avec iOS. J2ObjC convertit les classes Java en classes Objective-C qui u...

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  • How to deal with readers requesting free advice / support on my blog? [closed]

    - by russau
    I have a handful of popular articles on my blog (nothing huge), and they attract the occasional developer who wants help implementing some code grabbed from my blog. Now I'm getting people who haven't made any attempt to learn the code, email me their code, and expect me to trace it through for them. I'm sure anyone with a half-popular blog gets similar requests. What's the best way to deal with this scenario? I want to put together a boilerplate response including these points: How far have you gone with this on your own? (is it any benefit for anyone if I say they are being imposing) I'm happy to help with any problems you find in my code Point them to other forms of help such as stackoverflow, diagnostic tools relevant to the topic.

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  • Organization &amp; Architecture UNISA Studies &ndash; Chap 13

    - by MarkPearl
    Learning Outcomes Explain the advantages of using a large number of registers Discuss the way in which compilers optimize register usage Discuss the evolution of CISC machines Describe the characteristics of RISC architecture Discuss the RISC vs. CISC controversy Describe the way in which RISC and CISC design principles can be combined Instruction Execution Characteristics To understand the the line of reasoning of RISC advocates, we need a brief overview of instruction execution characteristics. These include… Operations Operands Procedure Calls These three sections can be studied in depth in the textbook at pages 503 - 505 A number of groups have come up with the conclusion that the attempt to make the instruction set architecture closer to HLLs (High Level Languages) is not the most effective design strategy. Rather HLL’s can be best supported by optimizing performance of the most time-consuming features of typical HLL programs. Generally 3 main characteristics came up to improve performance… Use a large number of registers or use a compiler to optimize register usage Careful attention needs to be paid to the design of instruction pipelines A simplified (reduced) instruction set is indicated The use of a large register optimization One of the most important design principles of RISC machines is the use of a large number of registers. The concept of register windows and the use of a large register file versus the use of cache memory are discussed. On the face of it, the use of a large set of registers should decrease the need to access memory. The design task is to organize the registers in such a fashion that this goal is realized. Read page 507 – 510 for a detailed explanation. Compiler-based register optimization   Reduced Instructions Set Architecture There are two advantages to smaller programs… Because the program takes up less memory, there is a savings in that resource (this was more compelling when memory was more expensive) Smaller programs should improve performance, and this will happen in two ways – fewer instructions means fewer instruction bytes to be fetched and in a paging environment smaller programs occupy fewer pages, reducing page faults. Certain characteristics are common to RISC processors… One instruction per cycle Register-to-register operations Simple addressing modes Simple instruction formats RISC vs. CISC After initial enthusiasm for RISC machines, there has been a growing realization that RISC designs may benefit from the inclusion of some CISC features CISC designs may benefit from the inclusion of some RISC features

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  • What makes you look like a bad developer (ie a hacker) [on hold]

    - by user134583
    This comes from a lot of people about me, so I have to look at myself. So I would wonder what make one a bad developer (ie a hacker). These are a few things about me I used IDE intensively, all features, you name it: auto-completion, refactoring, quick fixes, open type, view hierarchy, API documentation, etcc When I deal with writing code for a project in domain I am not used to (I can't have fluency in this, this is new), I only have a very rough high level ideas. I don't use the standard modeling diagrams for early detail planning. Unorthodox diagrams that I invented when I need to draw the design in details. I don't use UML or similar, I find them not enough. I divide the sorts of diagram I drew into 3 types. Very high level diagrams which probably can be understood by almost anybody. Data entity diagram used for modeling data objects only (like ER diagrams and tree for inheritances and composition). Action diagrams for agents/classes and their interactions on data objects they contain. Constantly changing the interface (public methods) between interacting agents/classes if the need arises. I am more refrained when the interface and the module have matured Write initial concept code in a quick hackie way just so that the module works in the general cases so that I can play around with it. The module will be re-factored intensively after playing around so I could see more corner cases that I couldn't or (wouldn't want) anticipate before writing code. Using JUnit for integration-like test by using TestSuite class and ordering Unit test classes in the suite Using debugger almost anytime there is a problem instead of reading the code Constantly search on the internet for how to do some thing with some library that I haven't used a lot. So judgment, am I a bad developer? a hacker? Put in other words, to make sure this is not considered off-topic: - Is this bad practice to make your code too agile during incubating/prototyping phase of software development - Is it bad practice to use JUnit for integration testing, (I know there are other framework for integration testing, but those frameworks are for a specific products, not general)

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  • i got mysql error on this statement i don't know why [closed]

    - by John Smiith
    i got mysql error on this statement i don't know why error is: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CONSTRAINT fk_objet_code FOREIGN KEY (objet_code) REFERENCES objet(code) ) ENG' at line 6 sql code is CREATE TABLE IF NOT EXISTS `class` ( `numero` int(11) NOT NULL AUTO_INCREMENT, `type_class` varchar(100) DEFAULT NULL, `images` varchar(200) NOT NULL, PRIMARY KEY (`numero`) CONSTRAINT fk_objet_code FOREIGN KEY (objet_code) REFERENCES objet(code) ) ENGINE=InnoDB;;

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  • What's New in the latest release of Oracle User Productivity Kit 11.0

    Enterprises are always looking to reduce overall project timelines, optimize business processes, and increase acceptance of their enterprise applications to ensure maximum ROI. The latest release of Oracle User Productivity Kit helps customers streamline the workflow process for the creation of content and offers conceptual-based assessment options to increase user adoption. Discover what is great and innovative about the latest release of Oracle UPK and UPK Professional. Learn about the integration of the UPK Developer and the Knowledge Center, which provides developers with a centralized, web-based platform for content deployment, tracking, and reporting.

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  • How do you go from a so so programmer to a great one? [closed]

    - by Cervo
    How do you go from being an okay programmer to being able to write maintainable clean code? For example David Hansson was writing Basecamp when in the process he created Rails as part of writing Basecamp in a clean/maintainable way. But how do you know when there is value in a side project like that? I have a bachelors in computer science, and I am about to get a masters and I will say that colleges teach you to write code to solve problems, not neatly or anything. Basically you think of a problem, come up with a solution, and write it down...not necessarily the most maintainable way in the world. Also my first job was in a startup, and now my third is in a small team in a large company where the attitude was/is get it done yesterday (also most of my jobs are mainly database development with SQL with a few ASP.NET web pages/.NET apps on the side). So of course cut/paste is more favored than making things more cleanly. And they would rather have something yesterday even if you have to rewrite it next month rather than to have something in a week that lasts for a year. Also spaghetti code turns up all over the place, and it takes very smart people to write/understand/maintain spaghetti code...However it would be better to do things so simple/clean that even a caveman/woman could do maintenance. Also I get very bored/unmotivated having to go modify the same things cut/pasted in a few locations. Is this the type of skill that you need to learn by working with a serious software organization that has an emphasis on maintenance and maybe even an architect who designs a system architecture and reviews code? Could you really learn it by volunteering on an open source project (it seems to me that a full time programmer job is way more practice than a few hours a week on an open source project)? Is there some course where you can learn this? I can attest that graduate school and undergraduate school do not really emphasize clean software at all. They just teach the structures/algorithms and then send you off into the world to solve problems. Overall I think the first thing is learning to write clean/maintainable code within the bounds of the project in order to become a good programmer. Then the next thing is learning when you need to do a side project (like a framework) to make things more maintainable/clean even while you still deliver things for the deadline in order to become a great programmer. For example, you are making an SQL report and someone gives you 100 calculations for individual columns. At what point does it make sense to construct a domain specific language to encode the rules in simply and then generate all the SQL as opposed to cut/pasting the query from the table a bunch of times and then adjusting each query to do the appropriate calculations. This is the type of thing I would say a great programmer would know. He/she would maybe even know ways to avoid the domain specific language and to still do all the calculations without creating an unmaintainable mess or a ton of repetitive code to cut/paste everywhere.

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  • How to open-source a project whose git repository has copyrighted media in the history?

    - by phyzome
    I want to release an audio fingerprinting software project under a free license, but the repository contains copyrighted audio files. The test cases also currently use these files. How do I release the code to the public with maximum version history but without violating copyright? Details: The code is versioned under git. We will collapse it all back into one branch before release. There are 400 MB of audio data. Some files are free-licensed music from e.g. Jamendo, others are MP3s from our personal collections. No matter what approach we take, we'll always keep an immutable copy of the original repo, so as not to destroy project history. Main question: How to handle the public release? Expunge all history of the files in question from the git repository and release the altered repo. (v64 pointed out a way to do this.) Alternatively, take a snapshot of the current state of the code and don't even bother having a public history of the pre-release code. Side question: How could we have avoided this dilemma in the first place, given that sometimes private code or media is needed for the early stages of a project?

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  • Basic questions while making a toy calculator

    - by Jwan622
    I am making a calculator to better understand how to program and I had a question about the following lines of code: I wanted to make my equals sign with this C# code: private void btnEquals_Click(object sender, EventArgs e) { if (plusButtonClicked == true) { total2 = total1 + Convert.ToDouble(txtDisplay.Text); //double.Parse(txtDisplay.Text); } else if (minusButtonClicked == { total2 = total1 - double.Parse(txtDisplay.Text) } } txtDisplay.Text = total2.ToString(); total1 = 0; However, my friend said this way of writing code was superior, with changes in the minus sign. private void btnEquals_Click(object sender, EventArgs e) { if (plusButtonClicked == true) { total2 = total1 + Convert.ToDouble(txtDisplay.Text); //double.Parse(txtDisplay.Text); } else if (minusButtonClicked == true) { double d1; if(double.TryParse(txtDisplay.Text, out d1)) { total2 = total1 - d1; } } txtDisplay.Text = total2.ToString(); total1 = 0; My questions: 1) What does the "out d1" section of this minus sign code mean? 2) My assumption here is that the "TryParse" code results in fewer systems crashes? If I just use "Double.Parse" and I don't put anything in the textbox, the program will crash sometimes right?

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  • Search Engine Optimization and SEO Services - What Do They Offer?

    Search engine optimization involves using the Internet as a marketing tool. Companies that are using the Internet to attract customers desire to optimize their exposure to potential to customers. In order to best advantage of SEO, it is recommended that you hire a professional service that can implement programs to evaluate the optimum marketing potential of the Internet. When considering hiring a company to assist you in this process it is important to understand how such services work.

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  • High Search Engine Ranking Optimization Tips - Do it Yourself

    Have you been looking for a simple way to learn high search engine ranking optimization techniques that works? Look no further as I reveal the little secrets of increasing my page rank on Google within 30 days for virtually all my websites. After you are through with reading this article, you will be able to optimize your web pages with the right keywords without much hassle.

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  • Identifying Trends Using Web Analytics

    With a wide variety of web analytics tools at their disposal, marketers have the information they need to identify trends in the marketplace. More importantly, these tools enable marketers to make actionable insights in order to change or optimize various marketing functions and methods.

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  • Please help me to improve Re-Sharper

    - by TATWORTH
    Re-Sharper is an excellent aid to producing good code in either C# or VB.NET. Recently through using Resharper and StyleCop, I have found three area where ReSharper needs to be improved. Please log into the YouTrack at http://youtrack.jetbrains.net and vote for the following: RSRP-268868 Improvement to removal of redundant else and invert if optimisations for enhanced stylecop compliance. When Resharper removes a redundant else, there needs to be a blank line added. Currently there is no provision to specify this. Please vote for this! RSRP-272286 Resharper Feature Request to move initialisation to static constructor Currently ReSharper offers moving initialisation of of non-static variable to a constructor. Why not offer the same for a static constructor?  Please vote for this! RSRP-272285 Expansion of Switch Statement by Resharper Currently ReSharper will fill an empty switch statement based upon an enumeration but will not add missing enumeration values to such a switch statement.   Can't code withoutCoding assistance, smart code editing and code completion for C# and VB.NET

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  • Curating projects of deceased friends

    - by Ant
    A very good friend of mine, and an avid programmer, recently passed away. He left nearly 40 projects on BitBucket. Most of them are public, but a few of them are marked as private. I've decided to take on curation duties for the projects rather than leave his work to disappear. If you have been in the same situation, what did you do? Did you open-source everything? Continue development? Delete it all? I'm very interested to hear other people's experiences. There are a few reasons why some of the projects are marked as private (private projects on BitBucket are visible only to invited users and the original creator): One of them is an iOS web app that was free in the app store. I've had to remove the app from the store as I'm shutting down his web sites as a favour to his widow. However, I've already made the app public under the GPL v3 (he was a big GPL supporter). One of them contains proprietary code. It can't be open-sourced. Others are very much work-in-progress. I don't know if he intended to make them into hosted, paid services or if he wanted to give the code away under an open-source licence when they were finished. Here's a list of the private projects: Some kind of living cell simulator that uses SBML along with Runge-Kutta and Euler algorithms to do... something. There's a fair amount of code here but I don't know what it does or how far along it is. No docs. An accountacy application; it seems to have a solid DB design behind it but there's little code on top of that. A website whose purpose is to suggest good restaurants. Built on yii. Seems to have a lot of code but I'd need to set up a WAMP stack to see how far along it is. A website intended to host memorials to people who suffered from the same problem he was. Built on Joomla. I'm not sure how much of the code is just Joomla and how much is custom; again, I'd need to get Joomla running to find out. I'd just introduced him to Mercurial and BitBucket. All of the private projects are single commits of codebases he wasn't using version control with/was previously using SVN. I don't have the SVN repositories so I can't see the commit logs.

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  • Top 10 SEO Lies

    There is a lot of white noise out there about SEO tactics. Sometimes it's hard to keep up with and we fall behind using out dated methods to optimize our websites. Here are the top 10 SEO lies so that you don't make that same mistake.

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  • SEO Tips For Bloggers

    You will learn how to optimize your blog for popular Search Engines like Google and Yahoo in this article. You will also pick up what are the important areas to look out for when optimizing your blog.

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  • Top Three Advantages of Using Link Building Services

    Link building services are an integral part of internet marketing strategies for any website. It is one of the top methods of directing quality web traffic. It can be done by anyone who knows anything about internet marketing however experts in the field are able to optimize the process which gives the best results in the shortest amount of time.

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  • The shortest licenses

    - by Darek Nedza
    What are the shortest licenses with aims for programmers/code. I have found only MIT that is page-long. What are other licenses that have approximately the same length or even shorter? Edit: Ok, length is not only criteria(I haven't expected one-line licenses, I have understaminate you people). I need easy to read and short licenses. It is meant for people who want to use my code not for lawyers who want to read long licenses. I am creating small codes to use by most people probably free of charge. I don't want useless information to be required, for example: what is X(for example: what is software, source code etc.) very specific information(for example: you can use it shop, opera, school... free of charge; but instead "use it everywhere but don't take money" Depending on type of code I would like to allow/disallow commercial usage.

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  • GWT Quake

    GWT Quake Three Googlers present their 20% project: a port of the Quake II engine to HTML5 using the Google Web Toolkit. For more information, please visit code.google.com From: GoogleDevelopers Views: 73 4 ratings Time: 01:15 More in Science & Technology

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