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  • Splitting an image in GWT results in unwanted white space

    - by rancidfishbreath
    I am using GWT 2.03 and am have an image that I want to place partially in an area with a background and partially above a background. I am using a FlexTable to try to accomplish this and have used GIMP to cut the image into two sections. I am trying to load the top part of the image into row 0 and the bottom part of the image into row 1. I set the alignment of the top image to ALIGN_BOTTOM but there is a bit of space at the bottom of cell and so the two parts of the picture don't touch. Here is an image showing what I am talking about. I set the background of the cell to be yellow show where the cell boundaries are. The bottom image and background are rendering correctly. Here is the relevant code snippet: FlexTable table = new FlexTable(); table.setCellSpacing(0); table.setCellPadding(0); table.setBorderWidth(0); FlexCellFormatter formatter = table.getFlexCellFormatter(); table.setWidget(0, 0, topImage); formatter.setStyleName(0, 0, "topImageStyle"); formatter.setVerticalAlignment(0, 0, HasVerticalAlignment.ALIGN_BOTTOM); table.setWidget(1, 0, bottomImage); formatter.setStyleName(1, 0, "bottomImageStyle"); How can I get rid of that space between my image and the cell boundary?

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  • atomic operation cost

    - by osgx
    Hello What is the cost of the atomic operation? How much cycles does it consume? Will it pause other processors on SMP or NUMA, or will it block memory accesses? Will it flush reorder buffer in out-of-order CPU? What effects will be on the cache? Thanks.

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  • spymemcached (Java Memcached Client)

    - by Java Guy
    Is there a way to collect the memcached stats using this API (spymemcached)? I know there are tools like cacti to collect information on Memcached Server. But I would like to collect, say, memory usage by each item I have put into the server--the total no. of items in the same category, etc... more importantly, the bytes used by individual pieces.

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  • Reading Resource Files from my own APK in Android Native Environment

    - by Kyle
    I'm porting to Android. My existing project has a ton of resource files that I'm porting into my Android project. I have them all in /res/raw/, and I would like to access those resources in my native library with functions such as fopen() and such. Can this be done, or do I have to go through JNI for this as well? I would really prefer not to, for ease of porting and possible speed and memory reasons.

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  • iPhone SDK: How to record voices with ambient noise supression?

    - by Harkonian
    Can anyone point me in the right direction on how I would minimize ambient noise while recording someone speaking using the iPhone SDK Core Audio? I'm guessing a band-pass filter that eliminates any frequencies above and below the human vocal range might work. I have no idea how I would implement band filters on audio in the SDK though. The optimum solution would be one that eliminates the noise from the stream before it is written to memory/disk. Some sample code would be appreciated.

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  • deleting an object

    - by Nima
    Hi, First, when you want to free the memory assigned to an object in C++, which one is preferred? Explicitly calling deconstructor or using delete? Object* object = new Object(...); ... delete object; OR object->~Object(); Second, does the delete operator call the deconstructor implicitly? Thanks,

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  • Are there any drawbacks to using helper :all in Rails

    - by Rob Jones
    In Rails 'helper :all' makes all your helpers 'available' to all your controllers. This is concise and convenient, but does it have any memory and/or performance implications compared to explicitly calling the helpers that each controller actually needs? It's unclear form the docs whether using it involves 'require'ing all those files, or whether autoload is being used. I can't tell from the source in the Rails framework docs. thanks

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  • How can I find out why a website looks different when I upload it to IIS ?

    - by UXdesigner
    Good day... I've been working on a website project, that requires to be on a Microsoft IIS Web Server. It is HTML, pure HTML, with really nice CSS, web-standards, etc. I open this website using in my computer, using Firefox, IE 8.0, Safari, Google Chrome and it looks fine everywhere. But as I upload it to the Microsoft IIS server, it changes a few things. for example: the main menu, which is a navigation bar that has dropdowns, seems to change it's line-height for some reason, and it is bigger. Some <h3> or <h2> Alignment seems wrong as well... And the lines that are supposed to surround the photographs in the website (like a frame - dotted line) won't appear. But all the rest of the CSS is loading perfectly fine. I don't think it's a path problem as everything is loading fine. But this is making me look bad and it is very important to have this done as soon as possible. Can someone give me good suggestions on what to look at ? The IIS permissions seem fine. I'm not a big Microsoft fan...but I have to develop the website there. Also, I uploaded the site to my apache server and it worked wonders. I wish I could change the policies in this corporation, but I can't. Thank you so much for your kind help.

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  • Faster integer division when denominator is known?

    - by aaa
    hi I am working on GPU device which has very high division integer latency, several hundred cycles. I am looking to optimize divisions. All divisions by denominator which is in a set { 1,3,6,10 }, however numerator is a runtime positive value, roughly 32000 or less. due to memory constraints, lookup table is not option. Can you think of alternatives? I have thought of computing float point inverses, and using those to multiply numerator. Thanks

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  • Is using the Class instance as a Map key a best practice?

    - by Pangea
    I have read somewhere that using the class instances as below is not a good idea as they might cause memory leaks. Can someone tell me if if that is a valid statement? Or are they any problems using it this way? Map<Class<?>,String> classToInstance=new HashMap(); classToInstanceMap.put(String.class,"Test obj");

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  • An affordable way to use multiple Delayed::Job queues

    - by NudeCanalTroll
    I have a Ruby on Rails app that needs process many background jobs simultaneously: anywhere from 5-6 at a time to up to 50-60 at a time depending on the time of day. Right now my app is running on Heroku, which charges $.05/hour per worker, regardless of how much CPU or memory the worker is using. This is costing me a boatload each month... up to $1200/mo. Are there any hosts that will allow me to do what I'm doing for significantly cheaper?

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  • Event sourcing: Write event before or after updating the model

    - by Magnus
    I'm reasoning about event sourcing and often I arrive at a chicken and egg problem. Would be grateful for some hints on how to reason around this. If I execute all I/O-bound processing async (ie writing to the event log) then how do I handle, or sometimes even detect, failures? I'm using Akka Actors so processing is sequential for each event/message. I do not have any database at this time, instead I would persist all the events in an event log and then keep an aggregated state of all the events in a model stored in memory. Queries are all against this model, you can consider it to be a cache. Example Creating a new user: Validate that the user does not exist in model Persist event to journal Update model (in memory) If step 3 breaks I still have persisted my event so I can replay it at a later date. If step 2 breaks I can handle that as well gracefully. This is fine, but since step 2 is I/O-bound I figured that I should do I/O in a separate actor to free up the first actor for queries: Updating a user while allowing queries (A0 = Front end/GUI actor, A1 = Processor Actor, A2 = IO-actor, E = event bus). (A0-E-A1) Event is published to update user 'U1'. Validate that the user 'U1' exists in model (A1-A2) Persist event to journal (separate actor) (A0-E-A1-A0) Query for user 'U1' profile (A2-A1) Event is now persisted continue to update model (A0-E-A1-A0) Query for user 'U1' profile (now returns fresh data) This is appealing since queries can be processed while I/O-is churning along at it's own pace. But now I can cause myself all kinds of problems where I could have two incompatible commands (delete and then update) be persisted to the event log and crash on me when replayed up at a later date, since I do the validation before persisting the event and then update the model. My aim is to have a simple reasoning around my model (since Actor processes messages sequentially single threaded) but not be waiting for I/O-bound updates when Querying. I get the feeling I'm modeling a database which in itself is might be a problem. If things are unclear please write a comment.

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  • Rmagick on BitNami not working

    - by Steven
    I am running a rails app on BitNami rubystack, and try to upload picture using file_column i get this error, check below: LoadError (998: Invalid access to memory location. - C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/rmagick-2.9.0-x86-mswin32/ ext/RMagick2.so): C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/rmagick-2.9.0-x86-mswin32/ext/RMagick2.so C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in require' C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:innew_constants_in

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  • Fread binary file dynamic size string [C]

    - by Blackbinary
    I've been working on this assignment, where I need to read in "records" and write them to a file, and then have the ability to read/find them later. On each run of the program, the user can decide to write a new record, or read an old record (either by Name or #) The file is binary, here is its definition: typedef struct{ char * name; char * address; short addressLength, nameLength; int phoneNumber; }employeeRecord; employeeRecord record; The way the program works, it will store the structure, then the name, then the address. Name and address are dynamically allocated, which is why it is necessary to read the structure first to find the size of the name and address, allocate memory for them, then read them into that memory. For debugging purposes I have two programs at the moment. I have my file writing program, and file reading. My actual problem is this, when I read a file I have written, i read in the structure, print out the phone # to make sure it works (which works fine), and then fread the name (now being able to use record.nameLength which reports the proper value too). Fread however, does not return a usable name, it returns blank. I see two problems, either I haven't written the name to the file correctly, or I haven't read it in correctly. Here is how i write to the file: where fp is the file pointer. record.name is a proper value, so is record.nameLength. Also i am writing the name including the null terminator. (e.g. 'Jack\0') fwrite(&record,sizeof record,1,fp); fwrite(record.name,sizeof(char),record.nameLength,fp); fwrite(record.address,sizeof(char),record.addressLength,fp); And i then close the file. here is how i read the file: fp = fopen("employeeRecord","r"); fread(&record,sizeof record,1,fp); printf("Number: %d\n",record.phoneNumber); char *nameString = malloc(sizeof(char)*record.nameLength); printf("\nName Length: %d",record.nameLength); fread(nameString,sizeof(char),record.nameLength,fp); printf("\nName: %s",nameString); Notice there is some debug stuff in there (name length and number, both of which are correct). So i know the file opened properly, and I can use the name length fine. Why then is my output blank, or a newline, or something like that? (The output is just Name: with nothing after it, and program finishes just fine) Thanks for the help.

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  • Caching in mmap

    - by myahya
    I am using mmap call to read from a very big file using simple pointer arithmetic in C++. The problem is that when I read small chunks of data (in the order of KBs) multiple times, each read take the same amount of time as the previous one. How can I know if the disk is being accessed to fulfill my request or whether the request is being fulfilled from main memory (page cache) in calls after the first one.

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  • How is hashCode() calculated in Java.

    - by Jothi
    What value is hashCode() method is returning in java?. i read that it is an memory reference of an object. when i print hascode value for new Integer(1), its 1. for String(a) - 97. so i confused. is it ascii or what type of value is?

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  • Is there any IDE integration for JBoss AS 6?

    - by Jonathan Frank
    We have switched to JBoss 6 to make it possible to use a wider range of Java EE technologies. We chose JBoss because of its small memory footprint compared to other application servers, so we have no other choice. Do you know any developer tools that can be integrated with JBoss AS 6? Thanks in advance Jonathan Frank

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  • Best free flowchart software?

    - by Click Upvote
    I need to map out a complex algorithm with lots of conditional options. Need an easy to use flowchart software, preferably free since I need it for just a one time use. Would prefer something lightweight which doesn't eat up all the CPU memory. Any ideas?

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  • Android service killed

    - by Erdal
    I have a Service running in the same process as my Application. Sometimes the Android OS decides to kill my service (probably due to low memory). My question is: does my Application get killed along with the Service? or how does it work exactly? Thanks!

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  • I want to create adjacency matrix using python

    - by A A
    I have very large data set it is almost 450000 lines and two rows, i want to compute adjacency matrix using python, because previously i have tried to do it in matlab, and it shows memory error because of large data values. my data values also start from 100 and goes upto 450000, Anyone can help me in this issue, as i am new to python. I have to first import the file into python using excel sheet or notepad and then compute the adjacency matrix

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  • 8GB Compact Flash Corrupted, Boot Sector Lost ?

    - by robert
    I have an 8GB Kingston compact Flash, and when I insert it into my mac it says that card is unredable and ask me for initialization. If i open Utilty Disk it show a card of 2,2 TB Generic Comact Flash, if I try to initialize that it give me error: POSIX reports: impossible to allocate memory. How i can format that ? There's a way with fdisk or smt to get this card work ? Thanks

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  • Peformance of f#

    - by Casebash
    What is the performance of f# like in terms of both memory and speed? I am particularly interested in your thoughts about what real world applications are viable. Benchmarks would be particularly relevant.

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