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• Arrays in javascript, how can i learn manipulating it?

  - by Noor

  I've read alot about the core implementation of arrays in javascript and often i find that experimenting is the best way to learn, Right now i have multiple forms where you can type in different things, i want to be able to pull the value of each one and put it in an array so that i can later on read them in in a dynamically created div.. Can anyone point me in the right direction? There is a way i could get around this and that would be by using just one form, and pulling the text from there seperated by comas (,).. the thing is that i don't have the knowledge to pull the text form the form, search and find the comas, then make a new variable i think is neccessary, and read that in.. i know how to "think" javascript, not how to write it.. how do i learn the easiest/fastest way?

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• How to design this simple database?

  - by Vafello

  I have 2 tables - one storing user information (id, username, password) and the second one storing information about events (id, name, description, date, username(represents the user who created the event)). I would like to implement 'favourite events' functionality. This would allow the user to store his favourite events and later display them in a list. I am not sure how to implement this in terms of design. I need a simple solution. Something like storing the IDs of favourite events in a field in the user table. I am using mysql and php. Can anyone point me to the right direction?

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• Seeking tutorial: introduction to ODBC with Delphi

  - by mawg

  I have a lot of embedded C/C++/Ada experience and an outdated smattering of Delphi plus some database stuff. Now I have to implement an app in Delphi which can manipulate MySql, Oracle, maybe MS Access. In short, I need ODBC. I need to programmatically created a database, define its structure and populate its contents, then later query its existence and programmatically search. I would prefer not to use 3rd party components, unless there is a compelling reason to do so (performance ought not to be an issue for the app, it won't have much data or be run often, at least not in v1.0) . Can anyone point me at a tutorial which can get me up to speed? Thanks

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• how to scrawl file hosting website with scrapy in python?

  - by Veryel Hua

  Can anyone help me to figure out how to scrawl file hosting website like filefactory.com? I don't want to download all the file hosted but just to index all available files with scrapy. I have read the tutorial and docs with respect to spider class for scrapy. If I only give the website main page as the begining url I wouldn't not scrawl the whole site, because the scrawling depends on links but the begining page seems not point to any file pages. That's the problem I am thinking and any help would be appreciated!

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• Keep a Google Maps v3 Map Hidden, show when needed

  - by Dr1Ku

  Is there a way of preventing Google Maps (JS, v3) of being displayed from the get-go ? I do some pre-processing and would like to show my 'Loading' spinner until everything is good to go (more eloquently put, hide the map -- e.g. the container div -- until all preprocessing is complete -- at which point, show the map). Hooking to the map's 'idle' event doesn't help that much, since the map is already displayed when this event hits. I know that the container div gets inline-styled by GMaps after loading, my first idea is to clear out the style attr (whilst listening to 'idle'), but it would be interesting to see if there is a way of creating the map and not displaying it until all pre-processing is done. Maybe by using an argument to the new google.maps.Map constructor, or a MapOption ? Any thoughts on this ? Thank you in advance !

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• Why does Spring Security Core RC4 require Grails 2.3?

  - by bksaville

  On the Spring Security Core plugin GitHub repo, I see that Graeme on May 21st upped the required version of Grails from 2.0 to 2.3 before the RC4 version was released a couple of months later, but I don't see any explanation for why. Was it mismatched dependencies, bug reports, etc? I run a 2.2.4 app, and I would prefer not to upgrade at this point just to get the latest RC of spring security core. I understand if the upgrade to 3.2.0.RELEASE of spring security caused mismatched dependencies with older versions of Grails since I've run into the same issues before. This originally came up due to a pull request on the spring security OAuth2 provider plugin that I maintain. The pull request upped the required version to 2.3, and the requester pointed me to the RC4 release of core as the reason. Thanks for the good works as always!

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• Solution to combine two submit buttons.. doing two different things from the same input

  - by zac

  I am trying to figure out how to combine two different forms, both require the same input but they do two different things. One form sends a request to the ecommerce platform to get the order status, and another form takes the same order number and returns a tracking code from USP or USPS. I am looking for some guidance on how I could combine these two actions.. one is currently using the POST method and the other GET. Here is an example .. so one is This one runs a validation script to confirm the order number is valid and then returns the order info if it is the second form is sending a get request to an asp file that is generating the proper tracking numbers. Can someone please point me to how I could begin to tackle this?

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• Multiple Payment options within the same order

  - by Rob Y

  I have a requirement to be able to accept different forms of payment within the same order - ie not just the usual credit card or paypal for the whole thing, but perhaps paypal for one item, cheque for another. I know this sounds quite crazy, but there is a good business reason for the requirement so I can't just push back. The best way I can think of implementing it at the moment is to have kind of a hub page, where you can "launch off" into multiple flows for each of the payments by opening new windows. I can't figure out a way of doing this in a linear flow as for example you can't guarantee that a user will come back from paypal, so you'd then lose the user completely. Is there a neater way of doing this that anyone can think of, or can anyone point me to an example of a site that does somethign similar for inspiration?

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• Best approch to dynamically filter .net objects

  - by maxba

  The project i´m working currently on has a way to define a filter to filter objects from a database. This filter is a pretty straitforward class containing filtercriteria that will be combined to a sql where-clause. The goal now is to use this filter class to filter .net objects as well. So the filter for example defines, that the title property of the object that it is applied to must contain some userdefined string etc. What are ways to approch this problem? What should the filter return instead of the sql where-clause and how can it be applied to the object? I´m thinking about this for hours and don´t yet have even a slight idea how to solve this. Been thinking about reflection, dynamic code execution, building expressions but still haven´t found an acutal starting point.

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• Is it possible to link directories in git?

  - by Andreas Selenwall

  I will start with a simplified example describing my intent. I have a repository my-rep.git containing two directories, src and deploy. In src I have my source code (NodeJS code, but that doesn't matter), and in deploy I want to keep my deploy configuration. So for example if I have a project, projectA, then the structure should look like this, my-rep.git/src/projectA my-rep.git/deploy/projectA/dotcloud.yml my-rep.git/deploy/projectA/src Now to my question. I want the source code in projectA to be available in the deploy directory for dotcloud. Is there any way I can make my-rep.git/deploy/projectA/src point to my-rep.git/src/projectA, that is, so when I do a git pull in deploy it will automatically pull the my-rep.git/deploy/projectA/src. It must be supported in git, symbolic linux links won't work as some developers in my team work in Windows.

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• What is the chance a CouchDB document update handler will get a revision conflict?

  - by jhs

  How likely is a revision conflict when using an update handler? Should I concern myself with conflict-handling code when writing a robust update function? As described in Document Update Handlers, CouchDB 0.10 and later allows on-demand server-side document modification. Update handlers can process non-JSON formats; but the other major features are these: An HTTP front-end to arbitrarily complex document modification code Similar code needn't be written for all possible clients—a DRY architecture Execution is faster and less likely to hit a revision conflict I am unclear about the third point. Executing locally, the update handler will run much faster and with lower latency. But in situations with high contention, that does not guarantee a successful update. Or does the update handler guarantee a successful update?

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• How would I strip an '&' symbol out of an ESRI dropdown before any of it's default control logic is

  - by Carter

  I have an ESRI dropdown control inside of an ESRI toolbar. One of the items in the dropdown needs to have an '&' symbol in it. As it turns out ESRI stuff builds it's callback strings as & delimited strings, so when an item is selected the parent toolbar immediately builds and handles the callback string. At one point it splits strings based on the '&' crashing the app. In effect, having an ampersand in an esri dropdown causes nasty stuff to happen when you select the item. What I need to do is find out how I can hop in before the callback stuff starts happening and strip that & out. I was thinking that perhaps I'd have to create a custom esri toolbar control, but I'm not sure and that'd be pretty undesirable. Any ideas?

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• Array of pointers in Objective-C using NSArray

  - by Amir

  Hello, I am writting program for my iphone and have a qestion. lets say i have class named my_obj class my_obj { NSString *name; NSinteger *id; NSinteger *foo; NSString *boo; } now i allocate 100 objects from type my_obj and insert them to array from type NSArray. then i want to sort the Array in two different ways. one by the name and the second by the id. i want to allocate another two arrays from type NSArray *arraySortByName *arraySortById what i need to do if i just want the sorted arrays to be referenced to the original array so i will get two sorted arrays that point to the original array (that didnt changed!) i other word i dont want to allocate another 100 objects to each sorted array.

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• Learning to write organized and modular programs (C++)

  - by Peter

  Hi All, I'm a computer science student, and I'm just starting to write relatively larger programs for my coursework (between 750 - 1500 lines). Up until now, it's been possible to get by with any reasonable level of modularization and object oriented design. However, now that I'm writing more complex code for my assignments I'd like to learn to write better code. Can anyone point me in the direction of some resources for learning about what sort of things to look for when designing your program's architecture so that you can make it as modularized as possible? Thank you for any help. Best, Peter

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• Serving CSS from a static domain

  - by Saif Bechan

  I want to serve my css and images from a static cookieless domain. Now my problem is how to point to the images from within my css files. I don't want to program my domain hard within the css file, for example: http://static.com/image.png I would rather have a variable pointing to the the image, so it works for every static domain i use. What is the best way for achieving this. Should i run the whole css file trough php and add the static domain in front of all the png references. A downside in this is that i have to place the whole css in html. Or is there another more optimized way of doing this.

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• Howto read system informations in C++ on windows and linux?

  - by f4

  I need to read system information like cpu/ram/disks usage in C++. Maybe swap, network and process too but that's less important. It has probably been done thousand of times before so I first tried to search for a library. Someone here suggested SIGAR, which seems to fit my needs but is GPL and it is for inclusion in a proprietary product. So it's not an option here. I feel like it's something not that easy to implement, as it'll need testing on several platforms. So a library would be welcome. If you don't know of any library, could you point me in the right direction for both platforms?

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• The pros and cons of use JSON for WCF service

  - by brz dot net

  What are the pros and cons of the following 2 cases: Case I: Traditional way: Add service reference in project. Create object and Get data from service on server side and bind to asp.net grid. Case II: Update Service for JSON behavior. Add service reference in project. Call service from javascript to get data. Bind data to jquery grid. Which one is the best approach and why?(Not developer point of view) If there is another approach which is more optimized, please explain it.

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• Convert SVN Subdirectory to Git

  - by magneticMonster

  I would like to ditch SVN for Git. My current SVN repository setup has projects under trunk (/trunk/projecta, /trunk/projectb, etc. with tags and branches at /tags/projecta-1.0, etc.). I would like to create distinct Git repos for each of these projects by pulling them out of SVN using git-svn. I've successfully pulled the entire SVN repo down to a local Git repo but all of the projects exist in the same Git repo now. Is it possible to pull them apart at this point?

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• supply inputs to python unittests

  - by zubin71

  I`m relatively new to the concept of unit-testing and have very little experience in the same. I have been looking at lots of articles on how to write unit-tests; however, I still have difficulty in writing tests where conditions like the following arise:- Test user Input. Test input read from a file. Test input read from an environment variable. Itd be great if someone could show me how to approach the above mentioned scenarios; itd still be awesome if you could point me to a few docs/articles/blog posts which I could read.

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• jquery / javascript for a user to select 1 of n images

  - by TesterTurnedDeveloper

  I want to display a few images (probably 5 max) and have a user click to select one. First thing I tried was radio buttons and putting the images inside labels. <input type="radio" name="BackgroundId" id="BackgroundId" value="1" /> <label for="BackgroundId"><img src="../../Content/images/thumb_1.jpg" /></label> Firefox will select the radio button when the user clicks the image, but IE doesn't. Is there a jquery plugin that will make the images clickable? Fancy-form looks like something I could use, but it isn't jquery and I've already got jquery in my project. Or can someone point me to a better way of selecting a single image?

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• Where do current (not HTML5) browsers stand on clipboard support for non-text data?

  - by John

  I don't really know where the line is between the browser itself and HTML/JS here. But let's say I want to write a web-app where I can copy a chunk of data from MSPaint (select, CTRL+c) and paste it into a web-page in some way... ultimately the point is the data goes to the server without me having to save it as a file first. Where are the problems here - browsers or client-side technologies? For instance if JS can't do it, could Flex/Silverlight? Advice on future technology welcome, but doesn't really answer the question - where are we right now with IE/FF/Chrome and JS/Flex/SL?

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• A good architecture is evil? Hardcode forever?

  - by igor

  I have worked in many companies. Most of all reached a big success in their field. Some times I found the code was written by owner or co-owner or the first developer of this company. It was strange from architectural point of view code or awful code styled, or hardcoded and so on. I know a couple of startups, that were grown up and were started from the "one night" code. Is it only way to get success to write code in this way? Why does a code written "on knee" but in time is better than delayed well thought-out one? What about future? Which way is the best: to write a good architecture, code and spend some more time at the startup or to write "fast" and hardcoded one that would be completely (partially) throw out (or maybe wouldn't) after some period of time (or never)?

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• How might one implement FileTimeToSystemTime?

  - by Billy ONeal

  Hello :) I'm writing a simple wrapper around the Win32 FILETIME structure. boost::datetime has most of what I want, except I need whatever date type I end up using to interpolate with Windows APIs without issues. To that end, I've decided to write my own things for doing this -- most of the operations aren't all that complicated. I'm implementing the TimeSpan - like type at this point, but I'm unsure how I'd implement FileTimeToSystemTime. I could just use the system's built-in FileTimeToSystemTime function, except FileTimeToSystemTime cannot handle negative dates -- I need to be able to represent something like "-12 seconds". How should something like this be implemented? Billy3

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• XML DOM Manipuation

  - by kunalsawlani

  Hi, I am new to XML and have been trying some simple examples and they work fine. I want to do something like the following, but I am not able to figure out how to go about doing this. I have a HTML web page, where the user types in some data in an input field. I want to take that data, parse it to create an XML string, and the apply XSLT transformation to it, and display the result back on the page. All this needs to be done on the client browser, with JavaScript. If some one could point out the steps or the general procedure to go about doing this, it would be great. I have been looking over the net, but the information is so vast, that I have not been able to locate exactly what I need. Thanks

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• How to sanely read and dump structs to disk when some fields are pointers?

  - by bp

  Hello, I'm writing a FUSE plugin in C. I'm keeping track of data structures in the filesystem through structs like: typedef struct { block_number_t inode; filename_t filename; //char[SOME_SIZE] some_other_field_t other_field; } fs_directory_table_item_t; Obviously, I have to read (write) these structs from (to) disk at some point. I could treat the struct as a sequence of bytes and do something like this: read(disk_fd, directory_table_item, sizeof(fs_directory_table_item_t)); ...except that cannot possibly work as filename is actually a pointer to the char array. I'd really like to avoid having to write code like: read(disk_df, *directory_table_item.inode, sizeof(block_number_t)); read(disk_df, directory_table_item.filename, sizeof(filename_t)); read(disk_df, *directory_table_item.other_field, sizeof(some_other_field_t)); ...for each struct in the code, because I'd have to replicate code and changes in no less than three different places (definition, reading, writing). Any DRYer but still maintainable ideas?

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