ECG simulation using matlab
- by G.K.Malik
hi
i am working on the simulation and noise cleaning for ECG ,my problem is that how to write a function for adding baseline artifact noise ,and high frequency noise to the simulated ECG signal.
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Query for retrieving top two rows from a table in SQL Server
- by Praveen
Hi All, I have a table called Employee with EmpID,Salary,Name fields. I want to get top two employees with maximum salary. How can i write this query ?Read the article
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Calling C# code from Java?
- by Keith G
Does anyone have a good solution for integrating some C# code into a java application? The code is small, so I could re-write in java, but I would rather reuse the code if possible. Don't repeat yourself, etc. Also, I know I can expose the C# as a web service or whatever, but it has some security/encryption stuff in there, so I would rather keep it tightly integrated if possible. Edit: It's going to be on a server-based app, so "downloading" another runtime is irrelevant.Read the article
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Predicate for comparing the month component of a Core Data date attribute
- by JK
I have a Core Data entity which has a date attribute. I would like to write a predicate to extract all dates within a specific month, e.g. July, irrespective of year. How can this be achieved? ThanksRead the article
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Predicate for comparing the month component of a Core Data date attribute
- by JK
I have a Core Data entity which has a date attribute. I would like to write a predicate to extract all dates within a specific month, e.g. July, irrespective of year. How can this be achieved? ThanksRead the article
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how to remove an element from a nested list?
- by kaki
if i have an nested list such as: m=[[34,345,232],[23,343,342]] if i write m.remove(345) it gives an error message saying element not in the list. i want to know how to remove an element from the nested list,easily??Read the article
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Can I optimize this at all?
- by Moshe
I'm working on an iOS app and I'm using the following code for one of my tables to return the number of rows in a particular section: return [[kSettings arrayForKey:@"views"] count]; Is there any other way to write that line of code so that it is more memory efficient? EDIT: kSettings = NSUserDefaults standardUserDefaults. Is there any way to rewrite my line of code so that whatever memory it occupies is released sooner than it is released now?Read the article
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windows batch: react to command not found
- by clamp
hello, i want to write a simple batch script, that calls a certain exe, but if this one is not found, it should call another exe. so in pseudocode set file=c:\path\tool.exe if(fileexists(file)) { call file } else { call c:\somethingelse.exe } thanks!Read the article
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How can I check for a file size and add that result in an Excel spreadsheet in Perl?
- by Nano Taboada
Currently I monitoring a particular file with a simple shell one-liner: filesize=$(ls -lah somefile | awk '{print $5}') I'm aware that Perl has some nice modules to deal with Excel files so the idea is to, let's say, run that check daily, perhaps with cron, and write the result on a spreadsheet for further statistical use.Read the article
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C++ Image Processing Libraries
- by xsound
Hi, I am looking for a C++ library for image processing. I need the library to threshold a PPM photo (color photo). Should I write my own code? what do you guys think? Thanks in advance.Read the article
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client generated double submit cookie, cross site request forgery prevention
- by james
in a double-submitted cookie csrf prevention scheme, is it necessary for the server to provide the cookie? it seems i could have javascript on the clients page generate and set a cookie "anti_csrf", then double submit that (once as a cookie, done by the browser, and once in the body of the request). a foreign domain would not be able to read or write the "anti_csrf" cookie to include it in the body of a request. is this secure, or am i overlooking something?Read the article
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input string was not in a correct format?
- by Surya sasidhar
hi, In my application i write the code like this byte [] byt=new byte[ Convert.ToSbyte(textbox1.tex)]; it is giving the error that input string was not in a correct format.Read the article
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Create automatically only getters in Eclipse
- by lerad
In Eclipse is it possible to create automatically Getters and Setters for a field. But I have a lot of private fields for which only getters should exist. Is somewhere in Eclipse a "create Getters" Function which does not create setters too? Well, it is not so much work to write getters, but doing it automatically would be nice :) Thank you, leradRead the article
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c++ volatile multithreading variables
- by anon
I'm writing a C++ app. I have a class variable that more than one thread is writing to. In C++, anything that can be modified without the compiler "realizing" that it's being changed needs to be marked volatile right? So if my code is multi threaded, and one thread may write to a var while another reads from it, do I need to mark the var volaltile? [I don't have a race condition since I'm relying on writes to ints being atomic] Thanks!Read the article
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Connecting to an MQ: Newbie question
- by deltamatrix
Hi, I am a novice with Websphere MQ and require some novice help. I am using Websphere MQ Explorer to connect to a queue but do not know how to write the connection string. I have all the details (host, port, channel, queue manager name) but do not know how to put them together correctly as a connection string. Can any help this novice? ThanksRead the article
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How to const declare the this pointer sent as parameter
- by Tomas
Hi, I want to const declare the this pointer received as an argument. static void Class::func(const OtherClass *otherClass) { // use otherClass pointer to read, but not write to it. } It is being called like this: void OtherClass::func() { Class::func(this); } This does not compile nad if i dont const declare the OtherClass pointer, I can change it. Thanks.Read the article
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[RAILS] Howto to download a file from a http and save it into database
- by Chris
Hi, i would like to create a Rails controller that download a serie of jpg files from the web and directly write them into database as binary (I am not trying to do an upload form) Any clue on the way to do that ? Thank youRead the article
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How do I use the conditional operator?
- by Jeremy Rudd
I've always wondered how to write the "A ? B : C" syntax in a C++ compatible language. I think it works something like: (Pseudo code) If A > B C = A Else C = B Will any veteran C++ programmer please help me out?Read the article
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Build UITextview with Line
- by milanjansari
Hello everybody, Does anyone idea about how can create UItextivew like same as below so user can easily write text in proper format. please check this link https://devforums.apple.com/message/217857#217857 is this possible, i have no idea about this. please anyone have idea above of the issue. Thanks you,Read the article
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Is there a way to test a program's hardware requirements without just using it on a bunch of differe
- by Matt
Is there a program out there or some other thing that will run some kind of virtualization for me or something, to test the hardware minimums for a program I write? Something I can do locally without install testing on, say, a 33 mhz 64kb ram IBM or somethingRead the article
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sql query returns incorrect result
- by reza saberi
I have a mysql database that stores quotation documents with some products that are clearly defining the price of each product in them, and a table for contracts storing contract details as well as customer code and quotation code to which it belongs. I have the following query to see how much is the total price of the quotation to write it in the invoice: select sum(sqproducts.price * sqproducts.quantity) as 'total-price', squotations.currency as 'currency' from sqproducts, ccontracts, squotations where sqproducts.contracted=1 AND squotations.code=sqproducts.quotation_code AND sqproducts.quotation_code=ccontracts.squotation_code AND sqproducts.quotation_code='QUOT/2012/1' group by currencyRead the article
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Jaxb to generate the XML directly to the OutputStream
- by sonu
Hi, I have a 500Mb csv file. I need to convert it into XML file. I am using the Jaxb to created the xml file. It is working fine for small amout of data. but for large amout of data like 300 mb it is throwing out of memory exception. Can anyone tell me that How can I create each element and write it into a file without creating the whole tree using the jaxb?" Thanks SonuRead the article
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Linked list Recursion ...
- by epsilon_G
hey , I'd like to make a recursive function using C++ I make this class class linklist { private: struct node { int data; node *link; }*p; void linklist::print_num(node* p) { if (p != NULL) { cout << p->data << " "; print_num (p->link); } } in the main program what should I write ...Read the article
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Python stdout, \r progress bar and sshd with Putty not updating regularly
- by Kyle MacFarlane
I have a dead simple progress "bar" using something like the following: import sys from time import sleep current = 0 limit = 50 while current <= limit: sys.stdout.write('\rSynced %s/%s orders' % (current, limit)) current_order += 1 sleep(1) Works fine, except over ssh with Putty. Putty only updates every 3 minutes or if a line ends with \n. Is this a Putty setting, sshd_config, or can I code around it?Read the article
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Simulating interaction between two users in Jmeter
- by Victoria
I have to register two users and simulate interaction between them (for example, a conversation). I can do the following: register the first user, then register the second, sign in using first user's data, write message to the second user and sign out. Then sign in using the second user's data, answer to the message and sign out. Is it possible to implement users' conversation without signing out if the system requires enabled cookies for users?Read the article
