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  • What is the best credit card processing service?

    - by JerSchneid
    We're looking to add credit card payments to our system (and it needs to be fairly custom, handling variable "per use" charges each month). We would like the integration to be simple and secure (i.e. no storing of credit card data on our system). What, in your opinion, is the best credit card processing provider to offer this kind of security and flexibility. List only one provider per answer to let the voting system do it's thing.

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  • Re-load Android activity data

    - by rhinds
    Hi, I am writing an Android app, part of which will be a survey involving multiple pages of checkbox question and answers. I have created an activity to display the question and options (from the DB) and what I want to do now is when i press the "Next" button it should just reload the current activity with the next question set from the database. (the activity starts with survey.getNextQuestion() - so its just a case of refreshing the activity so it updates) Im sure this is a simple thing to do -any ideas? Thanks

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  • High concurrent request server in ruby

    - by WedTM
    I'm trying to write a simple server that will grab an mp3 file from rackspace cloudfiles, and stream it to a client over HTTP. The server must be able to stream to multiple clients simultaneously, however, I'm finding it difficult to come up with a viable solution. Anyone have some ideas?

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  • R: preventing unlist to drop NULL values

    - by nico
    I'm running into a strange problem. I have a vector of lists and I use unlist on them. Some of the elements in the vectors are NULL and unlist seems to be dropping them. How can I prevent this? Here's a simple (non) working example showing this unwanted feature of unlist a = c(list("p1"=2, "p2"=5), list("p1"=3, "p2"=4), list("p1"=NULL, "p2"=NULL), list("p1"=4, "p2"=5)) unlist(a) p1 p2 p1 p2 p1 p2 2 5 3 4 4 5

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  • Combining echo and cat on Unix

    - by Dan
    Really simple question, how do I combine echo and cat in the shell, I'm trying to write the contents of a file into another file with a prepended string? If /tmp/file looks like this: this is a test I want to run this: echo "PREPENDED STRING" cat /tmp/file | sed 's/test/test2/g' > /tmp/result so that /tmp/result looks like this: PREPENDED STRINGthis is a test2 Thanks.

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  • How do you draw a string centered vertically in Java?

    - by Paul Alexander
    I know it's a simple concept but I'm struggling with the font metrics. Centering horizontally isn't too hard but vertically seems a bit difficult. I've tried using the FontMetrics getAscent, getLeading, getXXXX methods in various combinations but no matter what I've tried the text is always off by a few pixels. Is there a way to measure the exact height of the text so that it is exactly centered.

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  • How to use crystal reports with php

    - by SpikETidE
    Hi everybody... I need to use crystal reports with php... I googled around for a long time but was not able to find a good tutorial or book that will explain the process easily and efficiently... Can anyone point me towards a place where i can get a simple tutorial about using crystal reports with php....? Thanks a lot for your suggestions......

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  • Diagnosing problem with running ASP.NET app as 64-bit

    - by user54064
    I need to run an ASP.NET app as 64-bit. The app is quite large and has MANY assemblies to load. When I run it I am getting "is not a valid Win32 application" error in the web page as soon as I go to the first page. That page is a very simple "Hello World" page. However, it must be having problem with loading assemblies as 64-bit. How can I figure out which one(s) are the problem?

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  • Change window title to the one in text box in Objective-C?

    - by Nick Brooks
    I'm just getting started with Objective-C and I'm writing a simple application. I made two outlets : wnd - main window display - the text box Then I've tried using this code: [wnd setTitle:[display value]]; Unfortuanately it didn't work ... The debugger said : 2010-05-22 XX:XX:08.577 HelloWorld[2536:a0f] -[NSTextField value]: unrecognized selector sent to instance 0x102e032a0 Does anyone know how to get it to work?

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  • Designing a solid API, how?

    - by emi1faber
    Obviously, APIs have exploded over the past few years, but many of them seem poorly designed when it comes to utilizing them... I have an opportunity to design an API however I see fit, but I would like it to be easy to use for those accessing it. Of course, keeping it as simple as possible is a big help, but what are the gotchas that people have run into out there? Anything that should be avoided at all costs or implemented at all costs?

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  • Command passed as argument to shell script

    - by raj_arni
    Hi, I want to pass a command to a shell script. This command is a grep command. While executing I am getting the following errors, please help: myscript.sh "egrep 'ERROR|FATAL' \*20100428\*.log | grep -v aString" myscript.sh is a simple script: #!/bin/ksh cd log $1 the errors are: egrep: can't open | egrep: can't open grep egrep: can't open -v egrep: can't open aString Error is because egrap sees |, grep, -v and aString as arguments.

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  • Add content between Wordpress queried posts

    - by zac
    I am wondering how I can add something between posts being queried in Wordpress through this method: <?php $the_query = new WP_Query('category_name=name&showposts=2'); while ($the_query->have_posts()) : $the_query->the_post();?> Is there a way I could add something simple, like say a <hr> between the two posts being pulled?

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  • drawing circle without floating point calculation

    - by zaharpopov
    This is common interview question (according to some interview sites) but I can find no normal answers in Internet - some are wrong and some point to complex theory I expect not looked for in interview (like Bressenham algorithm). The question is simple: The circle equation is: x^2 + y^2 = R^2. Given R, draw 0,0-centered circle as best as possible without using any floating point (no trigo, square roots, and so on, only integers)

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  • Is it Bad Practice to use C++ only for the STL containers?

    - by gmatt
    First a little background ... In what follows, I use C,C++ and Java for coding (general) algorithms, not gui's and fancy program's with interfaces, but simple command line algorithms and libraries. I started out learning about programming in Java. I got pretty good with Java and I learned to use the Java containers a lot as they tend to reduce complexity of book keeping while guaranteeing great performance. I intermittently used C++, but I was definitely not as good with it as with Java and it felt cumbersome. I did not know C++ enough to work in it without having to look up every single function and so I quickly reverted back to sticking to Java as much as possible. I then made a sudden transition into cracking and hacking in assembly language, because I felt I was concentrated too much attention on a much too high level language and I needed more experience with how a CPU interacts with memory and whats really going on with the 1's and 0's. I have to admit this was one of the most educational and fun experiences I've had with computers to date. For obviously reasons, I could not use assembly language to code on a daily basis, it was mostly reserved for fun diversions. After learning more about the computer through this experience I then realized that C++ is so much closer to the "level of 1's and 0's" than Java was, but I still felt it to be incredibly obtuse, like a swiss army knife with far too many gizmos to do any one task with elegance. I decided to give plain vanilla C a try, and I quickly fell in love. It was a happy medium between simplicity and enough "micromanagent" to not abstract what is really going on. However, I did miss one thing about Java: the containers. In particular, a simple container (like the stl vector) that expands dynamically in size is incredibly useful, but quite a pain to have to implement in C every time. Hence my code currently looks like almost entirely C with containers from C++ thrown in, the only feature I use from C++. I'd like to know if its consider okay in practice to use just one feature of C++, and ignore the rest in favor of C type code?

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  • How to make a nested query with an Entity that doesn't really exist (many-to-many)

    - by Calou
    Hi everyone, I'm new with Doctrine2 so my question can be easy to answer (I hope so). First of all, here the SQL query that I'd want : SELECT * FROM Document WHERE id NOT IN (SELECT document_id FROM Documents_Folders) Pretty simple isn't it ? The porblem is that my table 'Documents_Folders' is not an entity. In fact, it was create because I have a many-to-many relation between my entities 'Document' and 'Folder'. I tried several queries, but none worked. Thanks.

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  • Seeking jQuery-based transition library

    - by justSteve
    I'm looking for a library (or plugin) that help me create a slideshow where (besides the simple ordering of images) I'm able to define the beginning and ending positions (either X/Y, or Zooms) for a given image and the plugin animates the intervening steps between them. Flash has a number of tools/libs like this, i'm sure jQuery has seen similar. Ideally something that offers a range of easing effects as well. I understand these elements are native to jQuery...i'm looking for a time-tested wrapper. thx

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  • XML serialization options in .NET

    - by Borek
    I'm building a service that returns an XML (no SOAP, no ATOM, just plain old XML). Say that I have my domain objects already filled with data and just need to transform them to the XML format. What options do I have on .NET? Requirements: The transformation is not 1:1. Say that I have an Address property of type Address with nested properties like Line1, City, Postcode etc. This may need to result in an XML like <xaddr city="...">Line1, Postcode</xaddr>, i.e. quite different. Some XML elements/attributes are conditional, for example, if a Customer is under 18, the XML needs to contain some additional information. I only need to serialize the objects to XML, the other direction (XML to objects) is not important Some technologies, i.e. Data Contracts use .NET attributes. Other means of configuration (external XML config, buddy classes etc.) would be a plus. Here are the options as I see them as the moment. Corrections / additions will be very welcome. String concatenation - forget it, it was a joke :) Linq 2 XML - complete control but quite a lot of hand written code, would need good suite of unit tests View engines in ASP.NET MVC (or even Web Forms theoretically), the logic being in controllers. It's a question how to structure it, I can have simple rules engine in my controller(s) and one view template per each possible output, or have the decision logic directly in the template. Both have upsides and downsides. XML Serialization - I'm not sure about the flexibility here Data Contracts from WCF - not sure about the flexibility either, plus would they work in a simple ASP.NET MVC app (non-WCF service)? Are they a super-set of the standard XML serialization now? If it exists, some XML-to-object mapper. The more I think about it the more I think I'm looking for something like this but I couldn't find anything appropriate. Any comments / other options?

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  • Java serialization testing

    - by Jeff Storey
    Does anyone know if there is a library that exists to help test if an object graph is fully serializable? It would probably be as simple as writing it out and reading it back in, but I figured someone must have abstracted this already - I just can't find it.

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  • jquery tree traversing help

    - by rod
    Hi All, Given simple DOM: <form id="form1">...</form> <div> <div> <a href="#" id="export">Export</a> </div> </div> Starting with id=export, is there a way to go up a variable amount of divs and then get the closest form id? Thanks, rodchar

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  • How to determine whether a spread-sheet cell contains a date, or a real number?

    - by Everyone
    When a cell in a spreadsheet contains a simple date (mm/dd/yyyy) the poi API flags the cell-type as 'numeric'. This is probably because spreadsheets ( IMO ) historically recognize only strings and real numbers. It is possible to hard-code the cell-index, and use it conditionally to call 'getDateCellValue'. But this feels like a hack. What other ways are there in the poi API to determine whether the content in a cell is a Date rather than a real number?

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  • Scala Map conversion

    - by Benjamin Metz
    I'm a Scala newbie I'm afraid: I'm trying to convert a Map to a new Map based on some simple logic: val postVals = Map("test" - "testing1", "test2" - "testing2", "test3" - "testing3") I want to test for value "testing1" and change the value (while creating a new Map) def modMap(postVals: Map[String, String]): Map[String, String] = { postVals foreach {case(k, v) => if(v=="testing1") postVals.update(k, "new value")} }

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