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• Minimize the sequence by putting appropriate operations ' DP'

  - by Vikas

  Given a sequence,say, 222 We have to put a '+' or '* ' between each adjacent pair. '* ' has higher precedence over '+' We have to o/p the string whose evaluation leads to minimum value. O/p must be lexicographically smallest if there are more than one. inp:222 o/p: 2*2+2 Explaination: 2+2+2=6 2+2*2=6 2*2+2=6 of this 3rd is lexicographically smallest. I was wondering how to construct a DP solution for this.

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• Web UI for inputting a function from the reals to the reals, such as a probability distribution.

  - by dreeves

  I would like a web interface for a user to describe a one-dimensional real-valued function. I'm imagining the user being presented with a blank pair of axes and they can click anywhere to create points that are thick and draggable. Double-clicking a point, let's say, makes it disappear. The actual function should be shown in real time as an interpolation of the user-supplied points. Here's what this looks like implemented in Mathematica (though of course I'm looking for something in javascript):

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• best way to create tables with Doctrine?

  - by ajsie

  assume that i start coding an application from scratch, is the best way to create tables when using Doctrine, to manually create tables in mysql and then generate models from the tables, or is it the other way around, that is to create the models in php and then generate tables from models? and if i already have a database, will the models created be optimal? cause i have heard some say that its best to create the database from scratch when using ORM, so that the relations are optimized for OOD. share your thoughts!

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• How important is it for me to pool my connections?

  - by Rio Mango

  It has been suggested to me that I rearrange my code to "pool" my ADO connections. On each web page I would open one connection and keep using the same open connection. But someone else told me that was important 10 years ago but is not so important now. If I make, let's say, 5 db calls on a web posting, is it problematic to be using 5 separate connections that I open/close?

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• C#. Where struct methods code kept in memory?

  - by maxima120

  It is somewhat known where .NET keeps value types in memory (mostly in stack but could be in heap in certain circumstances etc)... My question is - where is the code of the struct? If I have say 16 byte of data fields in the struct and a massive computation method in it - I am presuming that 16 byte will be copied in stack and the method code is stored somewhere else and is shared for all instances of the struct. Are these presumptions correct?

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• Help me choose between XML or SQL Lite on android

  - by Ngetha

  I have an android app that periodically, say once a week downloads content from a server in XML. The content is used by the app, different Acitivities use different parts of the content. My question is a design one, should I save the data in SQlite or just keep it as an XML file, which one would be faster to read? The app can only use one content piece at a time, which means subsequent XML content downloads replace the old one.

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• How can I discover the contract of a non-SOAP web API?

  - by Chris McCall

  Let's say I have the URI for a RESTful or other contract-less API. Is it possible to determine its interface programatically? I'm using C#/ASP.net MVC, not sure if that's important. I understand that there won't be a published contract, but I'm wondering if there's something I'm not thinking of (there usually is).

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• interact with an interface?

  - by ajsie

  from what i've read it seems that one can interact with an interface? eg. lets say that i've got an interface with an empty method "eat()" then 2 subclasses are implementing this interface. can my controller interact with only the interface and use it's eat() method? have a look at the picture in this link strategy

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• How to make hudson build only most current build.

  - by MikeU

  Question How do I setup Hudson so that if one person triggers a build, Hudson will put it on the queue and wait lets say 2 minutes, and during those 2 minutes if another build is triggered it will replace the older build on the queue with the new build? This way if there are 2 builds in those 2 minutes, Hudson will only perform the last build.

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• VIM plugin for updating C++ function definition

  - by Sunny

  I'm looking for a VIM plugin that can do these kind of thing. Let's say I have a function in a .cpp file void myFunction(int arg1, int arg2, int arg3){ //code } The function definition is defined in the .h file. So every time I change the function name or add a new argument to the function, I have to go back the the .h file to do the same. Is there a VIM plugin that can automate this task?

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• Javascript and timing, specifically with callbacks.

  - by Blankman

  I want to make sure I understand callbacks properly, and javascript timing etc. in general. Say my code looks like this, is it gauranteed to execute in order? SetList(); // initilizes the var _list Some.Code(_list, function(data) { // update list }); DoSomething(_list); // operates on _list

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• Are cookies enough for storing login data?

  - by jpjp

  I am reading the Head First PHP/Mysql book and they say to store both the user's username, email into cookies and sessions. Is it safe to assume that everyone nowadays accepts cookies? Or should I store both in sessions and cookies? I am not storing any sensitive data in cookies such as password, etc.

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• AppendTo does not work as desired

  - by Gokul

  When I say, msg.appendTo(ele.parent().next()), the msg successfully gets appended to a <p> with class=foo How can I specify it explicitly in the statement? I tried msg.appendTo(ele.parent().next().find('.foo')); but it doesn't work

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• How to "grep" out specific lline ranges of a file

  - by Mike

  There are often times I'll grep -l whatev file to find what I'm looking for. Say the output is 1234: whatev 1 5555: whatev 2 6643: whatev 3 If I want to then just extract the lines between 1234 and 5555, is there a tool to do that? For static files I have a script that does wc -l of the file and then does the math to split it out with tail & head but that doesn't work out so well with log files that are constantly being written to.

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• How to add a folder to java build path as library, having multiple jars or entries in it ?

  - by yuvraj

  First I want to say lots of thanks to "Rich seller" to solving my query for changing the entry order in eclipse java build path programatically. I want to add my Library folder to java build path which has several jars in it. It should behave like a classpath container. I tried with IClasspathContainer but failed to implement. Please help me.... Thanks in advance. YUVRAJ.

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• Any code/library to scale down an UIImage?

  - by erotsppa

  Is there any code or library out there that can help me scale down an image? If you take a picture with the iPhone, it is something like 2000x1000 pixels which is not very network friendly. I want to scale it down to say 480x320. Any hints?

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• Anyone know a working CSS selector hack that works in recent Safari but not chrome ?

  - by user318144

  The title sums it up. I'll get this out of the way and say I am aware that css hacks are dirty ugly horrible things. Sometimes dirty problems call for dirty solutions though :) So does anyone know of a css selector hack that works for recent safari versions but is not a general webkit hack ? My site behaves properly in chrome but has a bug in safari. So if anyone knows how i can select an element to only have a certain style in safari let me know!

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• what is size_t in C

  - by benjamin button

  Hi, i am getting confused with size_t in C. i know that it is returned by a sizeof operator. But what exactly it is?Is it a datatype? let's say i have a for loop int i; or size_t i;//which one should i use? for(i=0;i<some_size;i++)

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• Looking for a fast hash-function.

  - by Julian

  Hello, I'm looking for a special hash-function. Let's say I have a large list of strings, if I order them by their hash-values they should be ordered quasi randomly. The most important point is: it must be super fast. I've tried md5 and sha1 and they're using to much cpu power. Clashes are not a problem. I'm using javascript, so it shouldn't be too complicated to implement.

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• New job clarification [closed]

  - by Fred

  Lets say you have decided to join company A. During interview you got feedback on what technology you would be working on(C# win app) and other details( sketchy).Now you have decided to join the company. Is it ok to ask via mail for further information and also ask to specify certain topics to brush up so that one can be better prepared for next job? Of course i know this question is not programming related.

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• getting Url in the call back function of WebRequesting

  - by Stacker

  lets say i have a web request: WebRequest webRequest = WebRequest.Create(Url); webRequest.BeginGetResponse(this.RespCallback, webRequest); now is there is any way to do retierve the URL in private void RespCallback(IAsyncResult asynchronousResult) { // here } the idea is i want to provide a squence id in the url while doing webrequest and then reterive it on the call back and match it to know that this call back is from that request. any idea?

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• Retain IEnumerable<T> value during postback

  - by ScG

  I have an IEnumerable< T which is declared on the page like this: IEnumerable< Person person; When the page postsback, the person list is null. How can I retain the values of person list without declaring it as static? Sr. devs in my company say that you should not declare the list as static.

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• Sorting Custom Objects with Parameter in .NET?

  - by Jeffrey Kern

  Let's say I have a custom object of Foo Is there anyway I can sort through a list of these objects, like list<of foo>.sort() and also be able to sort this list with a passable parameter. which will influence the sort? list<of foo>.sort(pValue) I'm guessing I'll need to define two separate sorts, but I am not sure.

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• postgres too slow

  - by Killercode

  Hi, I'm doing massive tests on a Postgres database... so basically I have 2 table where I inserted 40.000.000 records on, let's say table1 and 80.000.000 on table2 after this I deleted all those records. Now if I do SELECT * FROM table1 it takes 199000ms ? I can't understand what's happening? can anyone help me on this?

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• Headers set on embedding

  - by mschoening

  Lets say I have a URL (http://www.example.com/something). Is the following scenario somehow possible? A) The user visits the URL directly and a standard page with markup, js, etc. is shown. B) The user embeds the same URL in an image tag and the URL is served only as an image.

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