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  • How to make a single image in to different(optimize) sizes once image uploaded?

    - by Shakil
    Hi All i am working on mvc4(webapi) i need create for single image into different sizes for example i had loaded a image for file upload control once press the button of upload the single image should divide in to different sizes (like thumbnail large size medium size ) actually i am new for webapi i don't have any idea about it but i need to make this by writing hard code i will provide a path for it to store images could any body plz help me to do this work thank in advance

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  • constructorless initialization and Dictionaries

    - by Stacey
    Using C# 3.0, we can initialize objects without their constructors for syntactical reasons. Such as .. ClassName c = new ClassName = { Property1 = "Value" } I was wondering how this works with Dictionaries and adding the items to them. Any ideas? class Foo { public Dictionary DictionaryObject { get; set; } } Foo f = new Foo = { // ??? } Thank you for your time!!

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  • Object Deletion: use parent or not

    - by metdos
    Which one do you prefer to delete objects? Especially in QT, but other practices are also welcome. These two alternatives seem same to me, are they? 1.Bound to another class, and destroy when it is destroyed. SomeClass::SomeClass{ socket_ = new QTcpSocket(this); } or 2.Destroy in the destructor of class SomeClass::SomeClass{ socket_ = new QTcpSocket(); } SomeClass::~SomeClass{ delete socket_; }

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  • Use Awk to Print every character as its own column?

    - by wizkid84
    Hi there, I am in need of reorganizing a large CSV file. The first column, which is currently a 6 digit number needs to be split up, using comma's as the field separator. For example, I need this: 022250,10:50 AM,274,22,50 022255,11:55 AM,275,22,55 turned into this: 0,2,2,2,5,0,10:50 AM,274,22,50 0,2,2,2,5,5,11:55 AM,275,22,55 Let me know what you think! Thanks!

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  • Numeric representation of a color

    - by George Johnston
    What would be the best format to numerically represent a color in .NET so that I wouldn't have to use the Color object? Right now I am saving the color as a the HTML representation, but in order to use it I have to parse it out. I am dealing with a 800x600 canvas that stores a color value for each pixel and I need to be able to render the color out as quick as possible without bloating my application out to storing 500k+ color objects.

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  • Sort array by two specifics values in PHP

    - by Roger
    The folks have already showed me how to sort an array by a specific value using usort and a fallback function in PHP. What if this specifc value doesn't exist and we have to use two values? in the example bellow the values [4] and [5]... In other words, I want to do this: order all objects numericaly by the fith value of each object from the highest to the lowest, and addicionally, for those objects that have the fifht value is empty (in the examplem '-'), order them by the fourth value. Array( [0] => Array( [0] => links-patrocinados [1] => adwords [2] => 0,5 [3] => R$92,34 [4] => 823000 [5] => 49500 ) [1] => Array( [0] => adwords [1] => google adwords como funciona [2] => 0,38 [3] => R$0,20 [4] => 480 [5] => 480 ) [2] => Array( [0] => links-patrocinados [1] => adword [2] => 0,39 [3] => R$58,77 [4] => 49500 [5] => 2900 ) [3] => Array( [0] => agencia [1] => agencias viagens espanholas [2] => - [3] => R$0,20 [4] => 58 [5] => - ) [4] => Array( [0] => agencia [1] => era agencia imobiliaria [2] => - [3] => R$0,20 [4] => 73 [5] => - ) )

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  • MapReduce programming system in java-actionscript

    - by eco_bach
    Just finished reading ch23 in the excellent 'Beautiful Code' http://oreilly.com/catalog/9780596510046 on Distributed Programming with MapReduce. I understand that MapReduce is a programming system designed for large-scale data processing problems, but I have a hard time getting my head around the basic examples given and how I might apply them in real world situations. Can someone give a simple example of MapReduce implemented using either java, javascript or actionscript?

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  • Is there a common practice how to make freeing memory for Garbage Collector easier in .NET?

    - by MartyIX
    I've been thinking if there's a way how to speed up freeing memory in .NET. I'm creating a game in .NET (only managed code) where no significant graphics is needed but still I would like to write it properly in order to not to lose performance for nothing. For example is it useful to assign null value to objects that are not longer needed? I see this in a few samples over Internet. Thanks for answers!

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  • What are the elements of a team development suite?

    - by mhempey
    For small-to-large teams developing software together, what tools are used to form a comprehensive team development framework? Specifically, I'm looking for a comprehensive list of all the individual functions involved (e.g. source control, bug management, testing tools, project management), not specific product recommendations. I'm also not restricting the list to a particular methodology (e.g. Scrum).

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  • GAE transaction exception suggestion

    - by bach
    Hi, The current situation encourages the design of the system to split object fields to seperate objects in order to reduce the chance of the JDOCanRetryException to be thrown. If we could have the fields that were changed by the other client who changed the object in the exception content itself we could deside whether to re-retrieve the object or ignore...

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  • Scala: getting the name of the class the trait is mixed in

    - by Alexey Romanov
    Given an instance of a class, we can obviously return its name: trait MixedInClassDiscovery { val className = this.getClass.getName } class AClass extends MixedInClassDiscovery { ... this.className // returns "AClass" ... } But this way uses reflection, once for every instance of AClass. Can the same be done once for every class, instead? One solution which comes to mind is to mix it into companion objects instead of classes themselves.

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  • JRuby-friendly method for parallel-testing Rails app

    - by Toby Hede
    I am looking for a system to parallelise a large suite of tests in a Ruby on Rails app (using rspec, cucumber) that works using JRuby. Cucumber is actually not too bad, but the full rSpec suite currently takes nearly 20 minutes to run. The systems I can find (hydra, parallel-test) look like they use forking, which isn't the ideal solution for the JRuby environment.

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  • Returning modified data to a template

    - by Duncan
    I need to amend QuerySet data when i return it to a template. for example, model.objects.all() returns a date (with other fields), but i also want to return the number of days since that date has passed. This is so that in the template, i can say "you last logged in 4 days ago". What is the best way to do this?

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  • Read a file from line X to line Y ?

    - by thedp
    Hello, Is there a way to read a file in PHP5 from line X to line Y into a string, without reading the entire file. I would like to return huge files (10,000+ lines) using ajax requests. Each request will provide the client with additional lines. And due to the fact that the file can reach large sizes, I would like to avoid reading it whole over and over again. Thank you.

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  • When is it okay to reference WindowsBase.dll?

    - by Tyler
    I've heard/read about people not wanting to reference the assembly because of the Windows component (e.g. "I don't want to reference Windows for my Web App). I'd like to hear what a large community feels about this. For which project types (business, data access, etc.) is it considered acceptable to reference WindowsBase.dll.

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  • How can I filter a date of a DateTimeField in Django?

    - by Xidobix
    I am trying to filter a DateTimeField comparing with a date. I mean: MyObject.objects.filter(datetime_attr=datetime.date(2009,8,22)) I get an empty queryset list as an answer because (I think) I am not considering time, but I want "any time". Is there an easy way in Django for doing this? * I have the time in the datetime setted, it is not 00:00.

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  • What is GC holes?

    - by tianyi
    I wrote a long TCP connection socket server in C#. Spike in memory in my server happens. I used dotNet Memory Profiler(a tool) to detect where the memory leaks. Memory Profiler indicates the private heap is huge, and the memory is something like below(the number is not real,what I want to show is the GC0 and GC2's Holes are very very huge, the data size is normal): Managed heaps - 1,500,000KB Normal heap - 1400,000KB Generation #0 - 600,000KB Data - 100,000KB "Holes" - 500,000KB Generation #1 - xxKB Data - 0KB "Holes" - xKB Generation #2 - xxxxxxxxxxxxxKB Data - 100,000KB "Holes" - 700,000KB Large heap - 131072KB Large heap - 83KB Overhead/unused - 130989KB Overhead - 0KB Howerver, what is GC hole? I read an article about the hole: http://kaushalp.blogspot.com/2007/04/what-is-gc-hole-and-how-to-create-gc.html The author said : The code snippet below is the simplest way to introduce a GC hole into the system. //OBJECTREF is a typedef for Object*. { PointerTable *pTBL = o_pObjectClass->GetPointerTable(); OBJECTREF aObj = AllocateObjectMemory(pTBL); OBJECTREF bObj = AllocateObjectMemory(pTBL); //WRONG!!! “aObj” may point to garbage if the second //“AllocateObjectMemory” triggered a GC. DoSomething (aOb, bObj); } All it does is allocate two managed objects, and then does something with them both. This code compiles fine, and if you run simple pre-checkin tests, it will probably “work.” But this code will crash eventually. Why? If the second call to “AllocateObjectMemory” triggers a GC, that GC discards the object instance you just assigned to “aObj”. This code, like all C++ code inside the CLR, is compiled by a non-managed compiler and the GC cannot know that “aObj” holds a root reference to an object you want kept live. ======================================================================== I can't understand what he explained. Does the sample mean aObj becomes a wild pointer after GC? Is it mean { aObj = (*aObj)malloc(sizeof(object)); free(aObj); function(aObj);? } ? I hope somebody can explain it.

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