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• What is the best Programming Language for Kiosk Application? [closed]

  - by Jen Lin

  I need your suggestions guys regarding the project I'm planning to create. I want to create a kiosk software/application that is capable to access database in a server. (So, there's a networking here..)Because the information that will be displayed in a Kiosk screen will be coming from a database in other computer. So my problem here is, I don't know which programming language is the best for this kind of application. I'm thinking about using Visual Basic 6.0 since my group is comfortable using this programming language, but I also want to consider the design. I don't like a plain button. Hope to hear from you guys, thanks much :)

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• Assembly load and execute issue

  - by Jean Carlos Suárez Marranzini

  I'm trying to develop Assembly code allowing me to load and execute(by input of the user) 2 other Assembly .EXE programs. I'm having two problems: -I don't seem to be able to assign the pathname to a valid register(Or maybe incorrect syntax) -I need to be able to execute the other program after the first one (could be either) started its execution. This is what I have so far: mov ax,cs ; moving code segment to data segment mov ds,ax mov ah,1h ; here I read from keyboard int 21h mov dl,al cmp al,'1' ; if 1 jump to LOADRUN1 JE LOADRUN1 popf cmp al,'2' ; if 1 jump to LOADRUN2 JE LOADRUN2 popf LOADRUN1: MOV AH,4BH MOV AL,00 LEA DX,[PROGNAME1] ; Not sure if it works INT 21H LOADRUN2: MOV AH,4BH MOV AL,00 LEA DX,[PROGNAME2] ; Not sure if it works INT 21H ; Here I define the bytes containing the pathnames PROGNAME1 db 'C:\Users\Usuario\NASM\Adding.exe',0 PROGNAME2 db 'C:\Users\Usuario\NASM\Substracting.exe',0 I just don't know how start another program by input in the 'parent' program, after one is already executing. Thanks in advance for your help! Any additional information I'll be more than happy to provide. -I'm using NASM 16 bits, Windows 7 32 bits.

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• In Scrum, should tasks such as development environment set-up and capability development be managed as subtasks within actual user stories?

  - by Asim Ghaffar

  Sometimes in projects we need to spend time on tasks such as: exploring alternate frameworks and tools learning the framework and tools selected for the project setting up the servers and project infrastructure (version control, build environments, databases, etc) If we are using User Stories, where should all this work go? One option is to make them all part of first user story (e.g. make the homepage for application). Another option is to do a spike for these tasks. A third option is to make task part of an Issue/Impediment (e.g. development environment not selected yet) rather than a user Story.

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• Most pain-free time registration software for developers ?

  - by driis

  I work as a consultant in a medium-sized firm. We need to keep track of time spent on individual tasks and which customers to bill to. Our current system for doing this is an old in-house system, that needs to be retired for various reasons. Most developers don't like registering time, so I am looking for the best tool for this job, that minimizes the time needed to register time. Must have features: Must be simple and easy to use. Must have reporting feature to use for billing. Must have an API, so we can integrate in-house tools. Registering time should be based on hours worked (ie. today, worked on Customer A, Task B from 8 AM to 12 AM). TFS integration is a plus, but not needed (ie. register time on a work item) May be open source or a paid product; doesn't really matter. What would you recommend ?

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• What's a good approach to adding debug code to your application when you want more info about what's going wrong?

  - by Andrei

  When our application doesn't work the way we expect it to (e.g. throws exceptions etc.), I usually insert a lot of debug code at certain points in the application in order to get a better overview of what exactly is going on, what the values for certain objects are, to better trace where this error is triggered from. Then I send a new installer to the user(s) that are having the problem and if the problem is triggered again I look at the logs and see what they say. But I don't want all this debug code to be in the production code, since this would create some really big debug files with information that is not always relevant. The other problem is that our code base changes, and the next time, the same debug code might have to go in different parts of the application. Questions Is there a way to merge this debug code within the production code only when needed and have it appear at the correct points within the application? Can it be done with a version control system like git so that all would be needed is a git merge? P.S. The application I'm talking about now is .NET, written in C#.

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• Full text search with Sphider

  - by Ravi Gupta

  I am searching for a good, light weight, open source, full text search engine for php. I came across a number of options like Lucene, Zend Lucene, Solr etc but at the same time I also find out many people suggesting Sphider for small/medium side websites. I looked at shipder website a lot but unable to find out how to use it as a Full Text Search Engine.If anybody worked on it could help me to figure out whether it supports full text search or not. Edit: Please don't suggest any other alternatives for full text search.

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• What language should I use for making a cross platform library?

  - by Andrei

  I want to build a SyncML parsing library (no UI) which should be able to build up messages based on information provided by the host application, fed in by the library's methods. Also, the library should to be able to do callbacks to methods in the host application. I want to be able to compile this and have it available on as many platforms as possible: Windows, Windows Phone 7 OS, OSX, iOS, Linux, Android, BlackBerry. Basically as many platforms as possible. The priority is to have this available on mobile devices. Questions: What setup should I use? (programming languages, compilers, IDE etc.) How would I compile this library for these different platforms and how would I connect to it? Any other info? e.g. articles that cover the subject of cross-platform development? I haven't done this sort of a cross-platform project before, so any available information to put me in the right direction would be welcomed. Myself, I have a background in C#/.NET and Objective-C.

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• Should I include HTML markup in my JSON response?

  - by Mike M. Lin

  In an e-commerce site, when adding an item to a cart, I'd like to show a popup window with the options you can choose. Imagine you're ordering an iPod Shuffle and now you have to choose the color and text to engrave. I'd like the window to be modal, so I'm using a lightbox populated by an Ajax call. Now I have two options: Option 1: Send only the data, and generate the HTML markup using JavaScript What's nice about this is that it trims down the Ajax request to the bear minimum and doesn't mix the data with the markup. What's not so great about this is that now I need to use JavaScript to do my rendering, instead of having a template engine on the server-side do it. I might be able to clean up the approach a bit by using a client-side templating solution. Option 2: Send the HTML markup What's good about this is that I can have the same server-side templating engine I'm using for the rest of my rendering tasks (Django), do the rendering of the lightbox. JavaScript is only used to insert the HTML fragment into the page. So it clearly leaves the rendering to the rendering engine. Makes sense to me. But I don't feel comfortable mixing data and markup in an Ajax call for some reason. I'm not sure what makes me feel uneasy about it. I mean, it's the same way every web page is served up -- data plus markup -- right?

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• Is there a good resource for learning Rails in depth? [closed]

  - by Kocheez

  I've been developing rails applications for about 6 months now (I was originally a java developer) and I'm getting familiar enough with building applications that I want to take my rails knowledge to the next level. The majority of books and learning materials I've found deal mostly with "how to use rails" rather than "how it works". I was wondering if there are any good resources for getting a really in depth understanding of the framework, such as how modules and classes are loaded, the underlying architecture, how servers interact, etc... Any tips on learning more would be greatly appreciated

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• Logic for capturing unique characteristics in an object array. C# LINQ [closed]

  - by Shawn H.

  Given the following "response" or array of objects, what would be the most efficient way to get the desired results. There must be an easier way than the exhaustive and tedious way I'm doing it now. A LINQ solution would be fantastic. Situation #1 <things> <thing id="1"> <feature>Tall</feature> </thing> <thing id="2"> <feature>Tall</feature> </thing> <thing id="3"> <feature>Tall</feature> <feature>Wide</feature> </thing> <thing id="4"> <feature>Tall</feature> </thing> </things> Result: Wide Situation #2 <things> <thing id="1"> <feature>Short</feature> </thing> <thing id="2"> <feature>Tall</feature> </thing> <thing id="3"> <feature>Tall</feature> <feature>Wide</feature> </thing> <thing id="4"> <feature>Tall</feature> </thing> </things> Result: Wide, Short, Tall Situation #3 <things> <thing id="1"> <feature>Tall</feature> <feature>Thin</feature> </thing> <thing id="2"> <feature>Tall</feature> </thing> <thing id="3"> <feature>Tall</feature> <feature>Wide</feature> </thing> <thing id="4"> <feature>Tall</feature> </thing> </things> Result: Wide, Thin Thanks.

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• form checkboxes different names each into multiple rows database [closed]

  - by Darlene

  Hi i've been at this for hours and need help. Thanks in advice. i have the following tables: tblprequestion quesid| ques tblanswers answerid|quesid | ans |date This is my form: prequestion form <?php $con = mysql_connect("localhost","root","") or die ("Could not connect to DB Server"); $db_selected = mysql_select_db("nbtsdb", $con) or die("Could not locate the DB"); $query3= mysql_query("SELECT * FROM tblprequestions", $con) or die("Cannot Access prequestions description from Server"); echo"<legend> Pre question :</legend>"; echo"<p></p>"; while($row = mysql_fetch_array($query3)) { echo"<p>"; echo"<input type='checkbox' name='question".$row['quesid']."[]' value='yes' />"; echo"<label>".$row['ques']."</label>&nbsp;&nbsp;&nbsp;"; echo"</p>"; } echo"<p></p>"; ?> i would like to know how to get the values from the form for each question (total of 17) to submit into the database. for example tblprequestion quesid| ques 1 Had a cold or fever in the last week? 2 Had minor outpaient surgery? tblanswers answerid|username |quesid | ans |date 1 lisa 1 yes 10/10/12 2 lisa 2 no 10/10/12

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• I need books for procedural programming

  - by Student

  Please suggest books for procedural programming. I need to know the core principles/patterns of procedural programming. So it doesn't matter if the book using any language to convey the procedural programming principles, be it pure C or others languages. Nowadays it is difficult to find ones. Even google and amazon searches didn't give me a satisfactory books. You may vote to close this question but please recommend books in comment section.

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• Non-English-based programming languages

  - by Jaime Soto

  The University of Antioquia in Colombia teaches its introductory programming courses in Lexico, a Spanish-based, object-oriented .NET language. The intent is to teach programming concepts in the students' native language before introducing English-based mainstream languages. There are many other Non-English-based programming languages and there is even a related question in Stack Overflow. I have several questions regarding these languages: Has anyone on this site learned to program using a non-English-based language? If so, how difficult was the transition to the first English-based language? Is there any research-based evidence that non-English speakers learn programming faster/better using languages with keywords in their native language instead of English-based languages?

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• Quality Assurance & Quality Control = verification & validation?

  - by user970696

  According to a book (page below), reviewing e.g. design (verification activity) is quality assurance. I would not agree, I would say its quality control because we are checking the conformance to specification, plans and detecting deviations (defects) as we do in quality control. But what would be an example of QA then? Could you give me a clear example that proves/disproves what is this book saying? Software Testing: Srinisvasan Desikan, Gopalaswamy Ramesh

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• How do you deal with translating theory into practice?

  - by Mr. Shickadance

  Hello all! Being a computer scientist in a research field I am often tasked with working alongside professionals outside of the software domain (think math people, electrical engineer etc), and then translating their theories and ideas into real-world implementations. I often find it difficult when they present a theoretical problem which appears to be somewhat disconnected from reality. I am not saying that the theory is bogus, only that it is difficult to translate into real-world situations. For example, recently I have been working with software defined radios. We are exploring many different areas, but often the math specialists in my group would present a problem which is heavily grounded in theory (signal processing, physics, whatever). I often struggle at times where it is hard to draw direct parallels between the theory and the real-world implementation that I need to develop. Say we are working on an energy detector, the theory person in my group would say "you need to measure the noise variance with no signal present." This leads me to think "how the hell do I isolate noise from a signal in reality?" There are many examples, but I hope you see where I am going. So, my question is how does one deal with implementation of theoretical concepts when the theory seems detached from reality? Or at least when the connections are not so clear. Or perhaps, the person with the 'theory' may be ignorant of real restrictions? Note: I found this to be a hard question to ask - hopefully you are following me. If you have suggestions on how I could improve it, by all means let me know! Thanks for looking! EDIT: To be a bit more clear, I understand in situations like this that I must learn that specific domain myself to an extent (i.e. signal processing), but I am more concerned with when those theoretical concepts do not appear to be as grounded in practice as one would like.

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• Visualize flowchart diagram with multiple end symbols

  - by platzhirsch

  I am looking for a standardize way to visualize the following hierarchical logic: The state of the thread is represented by the answers to the hierarchical set of question You can read this listing like a flowchart, you iterate over the questions decide, go one step deeper and so on. Therefore I thought the best way to visualize it, using a flowchart. The problem is, in this hierarchical set it is possible to end in more than one state and its totally valid. I have never seen a flowchart where you can enter more than one state. Is it still possible and I am missing the right symbol to present this logic or are flowchart not fitting anyway? What other graphical representation could I use, is there something fitting in UML? A non-deterministic state machine seems not to be intuitive enough, transfering it into a deterministic state machine would result in to many states, and so on.

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• what is a normal developer to pageview ratio?

  - by Anthony Shull

  I work for an e-commerce site that has lately been shedding its workforce. I was hired ten months ago as a UI Developer. At that time we had three other developers. One was the technical lead who had been with the company for 10 years. The other two were server-side developers who had been there for 10 and 3.5 years respectively. In ten months, the technical lead left for a better position, one developer was laid off, and the other very recently left. So, I am now the only developer on staff. We have one DBA and one network administrator. They are currently looking to hire another developer but are not willing to pay enough to hire a senior person. I consider myself a junior developer with two years of experience. I have argued that we need to hire at least one senior developer and another junior developer if we're going to keep our current site operational (not to mention develop new features)...even if that means laying off staff in other departments. Right now we get 6.5 million pageviews per month, and I feel like 3.2 million pageviews per developer must be incredibly abnormal. My question is then: what is a normal developer to pageview ratio? Are there any industry standards or literature on the subject that I can use to argue for more staff?

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• Best in-memory cache of DB objects for Silverlight [closed]

  - by Jon

  Hi, I'd like to set up a cache of database objects (i.e. rows in a table) in memory in silverlight, which I'll do using WCF and linq-to-sql. Once I have the objects in memory, I'm planning on using MSMQ to receive new objects whenever they have been modified. It's a somewhat complex approach but the goal is to reduce trips to the database and allow instant data communication between Silverlight applications that are connected to the MSMQ. My Silverlight applications are meant to be long-running and the amount of data to be cached will not be large. I'm planning on saving the in-memory cache using local storage. Anyway, in order to process the updated objects that come in, I'd like to know if the user has changed the existing object. Could I use some event relating to data-binding to set a flag indicating that the object has changes? Maybe there's a better way to do the cache entirely? Thanks!

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• When should complexity be removed?

  - by ElGringoGrande

  Prematurely introducing complexity by implementing design patterns before they are needed is not good practice. But if you follow all (or even most of) the SOLID principles and use common design patterns you will introduce some complexity as features and requirements are added or changed to keep your design as maintainable and flexible as needed. However once that complexity is introduced and working like a champ when do you removed it? Example. I have an application written for a client. When originally created there where several ways to give raises to employees. I used the strategy pattern and factory to keep the whole process nice and clean. Over time certain raise methods where added or removed by the application owner. Time passes and new owner takes over. This new owner is hard nosed, keeps everything simple and only has one single way to give a raise. The complexity needed by the strategy pattern is no longer needed. If I where to code this from the requirements as they are now I would not introduce this extra complexity (but make sure I could introduce it with little or no work should the need arise). So do I remove the strategy implementation now? I don't think this new owner will ever change how raises are given. But the application itself has demonstrated that this could happen. Of course this is just one example in an application where a new owner takes over and has simplified many processes. I could remove dozens of classes, interfaces and factories and make the whole application much more simple. Note that the current implementation does works just fine and the owner is happy with it (and surprised and even happier that I was able to implement her changes so quickly because of the discussed complexity). I admit that a small part of this doubt is because it is highly likely the new owner isn't going to use me any longer. I don't really care that somebody else will take this over since it has not been a big income generator. But I do care about 2 (related) things I care a bit that the new maintainer will have to think a bit harder when trying to understand the code. Complexity is complexity and I don't want to anger the psycho maniac coming after me. But even more I worry about a competitor seeing this complexity and thinking I just implement design patterns to pad my hours on jobs. Then spreading this rumor to hurt my other business. (I have heard this mentioned.) So... In general should previously needed complexity be removed even though it works and there has been a historically demonstrated need for the complexity but you have no indication that it will be needed in the future? Even if the question above is generally answered "no" is it wise to remove this "un-needed" complexity if handing off the project to a competitor (or stranger)?

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• Identifying languages used by particular industries

  - by user66146

  I am new to programming and I don't know the differences between the major languages. I desperately want to get into the gaming industry because I have so many stories I want to tell and so many experiences I want to create. I currently do 3D modeling/animation, so any similarities would be helpful. What steps should I take to investigate an industry (gaming) and the companies within that industry? How do I identify what programming languages they use, so I can study them?

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• Learning django by example source code (not examples)

  - by Bryce

  I'm seeking a nice complete open source django application to study and learn best practices from, or even use as a template. The tutorials only go so far, and django is super flexible which can lead one to paining themselves into a corner. Ideally such a template / example would: Ignore django admin, and implement full CRUD outside the admin. Be built like a large application in terms of best practices and patterns. Have a unit test Use at least one package (e.g. twitter integration or threaded comments) Implement some AJAX or Comet See also: Learning Django by example

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• Compound assignment operators in Python's Numpy library

  - by Leonard

  The "vectorizing" of fancy indexing by Python's numpy library sometimes gives unexpected results. For example: import numpy a = numpy.zeros((1000,4), dtype='uint32') b = numpy.zeros((1000,4), dtype='uint32') i = numpy.random.random_integers(0,999,1000) j = numpy.random.random_integers(0,3,1000) a[i,j] += 1 for k in xrange(1000): b[i[k],j[k]] += 1 Gives different results in the arrays 'a' and 'b' (i.e. the appearance of tuple (i,j) appears as 1 in 'a' regardless of repeats, whereas repeats are counted in 'b'). This is easily verified as follows: numpy.sum(a) 883 numpy.sum(b) 1000 It is also notable that the fancy indexing version is almost two orders of magnitude faster than the for loop. My question is: "Is there an efficient way for numpy to compute the repeat counts as implemented using the for loop in the provided example?"

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• How to speed up this simple mysql query?

  - by Jim Thio

  The query is simple: SELECT TB.ID, TB.Latitude, TB.Longitude, 111151.29341326*SQRT(pow(-6.185-TB.Latitude,2)+pow(106.773-TB.Longitude,2)*cos(-6.185*0.017453292519943)*cos(TB.Latitude*0.017453292519943)) AS Distance FROM `tablebusiness` AS TB WHERE -6.2767668133836 < TB.Latitude AND TB.Latitude < -6.0932331866164 AND FoursquarePeopleCount >5 AND 106.68123318662 < TB.Longitude AND TB.Longitude <106.86476681338 ORDER BY Distance See, we just look at all business within a rectangle. 1.6 million rows. Within that small rectangle there are only 67,565 businesses. The structure of the table is 1 ID varchar(250) utf8_unicode_ci No None Change Change Drop Drop More Show more actions 2 Email varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 3 InBuildingAddress varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 4 Price int(10) Yes NULL Change Change Drop Drop More Show more actions 5 Street varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 6 Title varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 7 Website varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 8 Zip varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 9 Rating Star double Yes NULL Change Change Drop Drop More Show more actions 10 Rating Weight double Yes NULL Change Change Drop Drop More Show more actions 11 Latitude double Yes NULL Change Change Drop Drop More Show more actions 12 Longitude double Yes NULL Change Change Drop Drop More Show more actions 13 Building varchar(200) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 14 City varchar(100) utf8_unicode_ci No None Change Change Drop Drop More Show more actions 15 OpeningHour varchar(400) utf8_unicode_ci Yes NULL Change Change Drop Drop More Show more actions 16 TimeStamp timestamp on update CURRENT_TIMESTAMP No CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP Change Change Drop Drop More Show more actions 17 CountViews int(11) Yes NULL Change Change Drop Drop More Show more actions The indexes are: Edit Edit Drop Drop PRIMARY BTREE Yes No ID 1965990 A Edit Edit Drop Drop City BTREE No No City 131066 A Edit Edit Drop Drop Building BTREE No No Building 21 A YES Edit Edit Drop Drop OpeningHour BTREE No No OpeningHour (255) 21 A YES Edit Edit Drop Drop Email BTREE No No Email (255) 21 A YES Edit Edit Drop Drop InBuildingAddress BTREE No No InBuildingAddress (255) 21 A YES Edit Edit Drop Drop Price BTREE No No Price 21 A YES Edit Edit Drop Drop Street BTREE No No Street (255) 982995 A YES Edit Edit Drop Drop Title BTREE No No Title (255) 1965990 A YES Edit Edit Drop Drop Website BTREE No No Website (255) 491497 A YES Edit Edit Drop Drop Zip BTREE No No Zip (255) 178726 A YES Edit Edit Drop Drop Rating Star BTREE No No Rating Star 21 A YES Edit Edit Drop Drop Rating Weight BTREE No No Rating Weight 21 A YES Edit Edit Drop Drop Latitude BTREE No No Latitude 1965990 A YES Edit Edit Drop Drop Longitude BTREE No No Longitude 1965990 A YES The query took forever. I think there has to be something wrong there. Showing rows 0 - 29 ( 67,565 total, Query took 12.4767 sec)

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• How do I do TDD on embedded devices?

  - by Darth

  I'm not new to programming and I've even worked with some low level C and ASM on AVR, but I really can't get my head around a larger-scale embedded C project. Being degenerated by the Ruby's philosophy of TDD/BDD, I'm unable to understand how people write and test code like this. I'm not saying it's a bad code, I just don't understand how this can work. I wanted to get more into some low level programming, but I really have no idea how to approach this, since it looks like a completely different mindset that I'm used to. I don't have trouble understanding pointer arithmetics, or how allocating memory works, but when I see how complex C/C++ code looks compared to Ruby, it just seems impossibly hard. Since I already ordered myself an Arduino board, I'd love to get more into some low level C and really understand how to do things properly, but it seems like none of the rules of high level languages apply. Is it even possible to do TDD on embedded devices or when developing drivers or things like custom bootloader, etc.?

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• Roo gem .xlsx files performance problems [closed]

  - by alvaritogf

  I am getting unacceptable performace problems by using the roo gem for reading a file by using XLSX or XLS library from this gem. Someone may suggest me an alternative about how to parse an .XLSX file? parsed_file = Excel.new(filename,false, :ignore) if (file_format.upcase == "XLS") parsed_file = Excelx.new(filename,false, :ignore) if (file_format.upcase == "XLSX") raise t "#{filename} is not an Excel file!" if (!parsed_file) parsed_file.default_sheet = parsed_file.sheets[0]#'Sheet2'#oo.sheets[1] first_row = parsed_file.first_row last_row = parsed_file.last_row first_column = parsed_file.first_column last_column = parsed_file.last_column #logger.info "#### Total Rows:#{last_row}, first_row:#{first_row}, last_row:#{last_row}, first_column:#{first_column}, last_column:#{last_column}" first_row.upto(last_row) do |current_line| # Stuff .... end Thanks

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