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• nested page-faulting of user-space address in Linux

  - by shankar

  Hi, I would like to know if it is functionally wrong to page-fault a user-space address when kernel is running fault-handler to bring in a user-page. OS is Linux 2.6.30 Assume that both user-addresses are valid ( falling within vma , rw permission ) for the task. When I check the kernel code, i find that the kernel does not mind the nested fault if the faulted-addresses are valid and the fault did not occur in atomic-context or in irq handler. (I dont think the answer is cpu-specific, but I would add that i am interested in arm and mips ). eg : The scenario can happen if I print stack-data from page-fault handler. thanks shankar

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• Spacing from outer space

  - by meo

  I just wonder where is this space between the end of the image and the end of the li's are coming from: http://bluesys.ch/lussy/ its just a simple UL li img code: div#slider { border: 5px solid #fff; } div#slider ul li { border-bottom: 1px solid pink; } div#slider ul li img { border-bottom: 1px solid green; margin: 0; } note that all margins and paddings are set to 0 by my reset.css can someone help me out? I colored the borders that you can see the spacing i speak of. I use firefox.

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• Huge file in Clojure and Java heap space error

  - by trzewiczek

  I posted before on a huge XML file - it's a 287GB XML with Wikipedia dump I want ot put into CSV file (revisions authors and timestamps). I managed to do that till some point. Before I got the StackOverflow Error, but now after solving the first problem I get: java.lang.OutOfMemoryError: Java heap space error. My code (partly taken from Justin Kramer answer) looks like that: (defn process-pages [page] (let [title (article-title page) revisions (filter #(= :revision (:tag %)) (:content page))] (for [revision revisions] (let [user (revision-user revision) time (revision-timestamp revision)] (spit "files/data.csv" (str "\"" time "\";\"" user "\";\"" title "\"\n" ) :append true))))) (defn open-file [file-name] (let [rdr (BufferedReader. (FileReader. file-name))] (->> (:content (data.xml/parse rdr :coalescing false)) (filter #(= :page (:tag %))) (map process-pages)))) I don't show article-title, revision-user and revision-title functions, because they just simply take data from a specific place in the page or revision hash. Anyone could help me with this - I'm really new in Clojure and don't get the problem.

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• How to increase Java heap space for a tomcat app

  - by Ankur

  There are lots of questions that ask this or a similar question. They all give the command that has to be executed, what I don't understand is where do I write this command. I want to permanently increase the heap space for my tomcat apps. I read this page http://javahowto.blogspot.com/2006/06/6-common-errors-in-setting-java-heap.html and it says under the Tomcat section Stop Tomcat server, set environment variable CATALINA_OPTS, and then restart Tomcat. Look at the file tomcat-install/bin/catalina.sh or catalina.bat for how this variable is used. For example, set CATALINA_OPTS=-Xms512m -Xmx512m (Windows, no "" around the value) export CATALINA_OPTS="-Xms512m -Xmx512m" (ksh/bash, "" around the value) setenv CATALINA_OPTS "-Xms512m -Xmx512m" (tcsh/csh, "" around the value) So I replaced the line set CATALINA_OPTS= with set CATALINA_OPTS=-Xms512m -Xmx512m But I still get the error.

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• Create hyperlink in django template of object that has a space

  - by Ed

  I am trying to create a dynamic hyperlink that depends on a value passed from a function: {% for item in field_list %} <a href={% url index_view %}{{ item }}/> {{ item }} </a> <br> {% endfor %} The problem is that one of the items in field_list is "Hockey Player". The link for some reason is dropping everything after the space, so it creates the hyperlink on the entire "Hockey Player", but the address is http://126.0.0.1:8000/Hockey How can I get it to go to http://126.0.0.1:8000/Hockey Player/ instead?

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• Color space - RGB and YCbCr question

  - by HardCoder1986

  Hello! I am now trying to understand how JPEG encoding works and everything seems fine except the color transformation part. Before attempting to do a DCT in JPEG algorithm, the image is transformed into YCbCr color space. To me this essentially means that we just (comparing to initial RGB image) take a chunk of color information and dispose it while applying the RGB -> YCbCr transformation. So, our encoding steps look generally like RGB -> YCbCr -> DCT -> Huffman. The decoding means inversing this process. And my question is - why does the image (for example, created and exported to JPEG) remain the same in terms of color, although we have to make inverse YCbCr -> RGB transform. Where does the disposed part of color information comes from or how is it handled?

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• Problems crossing the boundary between protected greasemonkey execution space and the unsafeWindow l

  - by Chilly

  Hi guys. Here is my problem: I've registered some callbacks into a Yahoo event driven webpage (betfair.com market views) and am trapping the betsPlaced events with a handler. So far so simple. Next stage is to get the event back into greasemonkey land, and while I know that from greasemoney space you can call unsafeWindow.stuff, there is no reverse operation (by design). So if I want to send the contents of the event over, say, a cometd queue, my carefully set up jquery, greasemonkey, YUI2, betfair environment fails by telling me that unsafeWindow processes cant call GM_ajax stuff. This is obviously safe and sane, but it basically stops me doing what I want to do. Has anyone tried doing this (ignore the cometd stuff, just general ajax calls) and succeeded? I've had a look at pages like this: http://wiki.greasespot.net/0.7.20080121.0%2B_compatibility but it doesnt appear to work for all the calls.

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• Tab versus space indentation in C#

  - by Lars Fastrup

  I sometimes find myself discussing this issue with other C# developers and especially if we use different styles. I can see the advantage of tab indentation allowing different developers to browse the code with their favorite indent size. Nonetheless, I long ago went for two space indentation in my C# code and have stuck with it ever since. Mainly because I often disliked the way statements spanning multiple lines are sometimes messed up when viewing code from other developers using another tab size. Recently a developer at one of my clients approached me and asked why I did not use tabs because he preferred to view code with an indentation size of 4. So my question is: Which style do you prefer and why?

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• weird space in IE - Any suggestions?

  - by Guru

  The below table is the only element inside a body tag - This displays fine in Firefox 3 as i expect it to be but it does not look good in IE7. There is a weird space just between the nested table and the row above. Can you please suggest some way to remove that weird space? - Thanks <table> <tr> <td colspan="14"> <div> <table id="value_table" width="100%" border="0" cellspacing="0" cellpadding="2" style="border-collapse: collapse; display: block"> <tr> <td height="20" align="center" valign="Middle" class="Header"> <div align="left"><b>  Search Relationships</b></div> </td> </tr> <tr> <td>This is working</td> </tr> <tr valign="top"> <td>second row</td> <td nowrap="nowrap" class="GrayRow" valign="top" border="1" height="40" align="center" style="border: none"> just above the table <table border="1" cellpadding="0" cellspacing="0" align="left"> <tr valign="top"> <td>new row inside table</td> <td class="GrayRow" nowrap="nowrap"> <b>Select:</b>   <select id="j_id19:browseType" name="j_id19:browseType" size="1" class="TextBlackNormal" onchange="showDynamicBox(this);"> <option value="NAME">User Name</option> <option value="ID">User Id</option> <option value="IBD/Office/IP">IBD/Office /IP</option> <option value="APA#">APA#</option></select>    </td> <td> <div id="dynamicBox1" style="display: block"><input id="j_id19:j_id23" name="j_id19:j_id23" type="text" value="" size="32" class="TextBlackNormal" /></div> </td>     <td> <div id="dynamicBox2" style="display: none"><input id="j_id19:j_id25" name="j_id19:j_id25" type="text" value="" size="32" class="TextBlackNormal" /></div> </td>     <td> <div id="dynamicBox3" style="display: none"> IBD   <input id="j_id19:ibdval1" name="j_id19:ibdval1" type="text" value="" maxlength="3" size="3" onkeyup="goToNextFocus(this);" class="TextBlackNormal" />   OFF   <input id="j_id19:ibdval2" name="j_id19:ibdval2" type="text" value="" maxlength="3" size="3" onkeyup="goToNextFocus(this);" class="TextBlackNormal" />   IP    <input id="j_id19:ibdval3" name="j_id19:ibdval3" type="text" value="" maxlength="3" size="3" onkeyup="goToNextFocus(this);" class="TextBlackNormal" /> </div> </td>     <td> <div id="dynamicBox4" style="display: none"> Average Price Account#    <input id="j_id19:apaval1" name="j_id19:apaval1" type="text" value="" maxlength="3" size="3" onkeyup="goToNextFocus(this);" class="TextBlackNormal" />  <input id="j_id19:apaval2" name="j_id19:apaval2" type="text" value="" maxlength="3" size="3" onkeyup="goToNextFocus(this);" class="TextBlackNormal" />  <input id="j_id19:apaval3" name="j_id19:apaval3" type="text" value="" maxlength="3" size="3" onkeyup="goToNextFocus(this);" class="TextBlackNormal" /> </div> </td>        <td class="GrayRow" nowrap="nowrap"> <div id="msg_multiple_inputs" style="display:none"> <font color="#990000" size="1">Enter multiple separated by commas   </font> </div>                                   </td> <td><input id="j_id19:display" name="j_id19:display" type="submit" value="Display" class="TextBlackNormal" /></td> </tr> </table> </td> </tr> </table> </div> </td> </tr> </table>

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• Remove space in marquee in html

  - by Suman.hassan95

  I have created a marquee of images for my webpage. But how can the space between the last and the first image be removed to have a continuous effect ?? I am giving the code i used below, <marquee style="overflow:" behavior="scroll" direction="left" OnMouseOver="this.stop()" OnMouseOut="this.start()"> <img src="images/Bluelounge.gif" width="300" height="200" alt="lon"> <img src="images/Southleather.gif" width="300" height="200" alt="south"> <img src="images/Dell-monitor.gif" width="300" height="200" alt="monitor"> <img src="images/Spphire.gif" width="300" height="200" alt="card"> </marquee>

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• Set asisde space for ADT when reading integers from file

  - by That Guy

  I'm using C to make maze solver. The program should be able read a maze from a text file containing a grid of 1 and 0 representing walls and paths. This file could be of any size as the user selects which maze to use. The program should then show the maze being solved. As the maze is being solved it should show where has been walked and how many steps have been taken. I have made an ADT called Cell containing a bool for wall or path and an integer for steps taken. I now need to populate a 2D array of Cells which means I need to set aside enough space to store a Cell for every integer in the maze file. What would be the best way to do this?

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• Faking a Single Address Space

  - by dsimcha

  I have a large scientific computing task that parallelizes very well with SMP, but at too fine grained a level to be easily parallelized via explicit message passing. I'd like to parallelize it across address spaces and physical machines. Is it feasible to create a scheduler that would parallelize already multithreaded code across multiple physical computers under the following conditions: The code is already multithreaded and can scale pretty well on SMP configurations. The fact that not all of the threads are running in the same address space or on the same physical machine must be transparent to the program, even if this comes at a significant performance penalty in some use cases. You may assume that all of the physical machines involved are running operating systems and CPU architectures that are binary compatible. Things like locks and atomic operations may be slow (having network latency to deal with and all) but must "just work".

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• Running python batch file that has a path with SPACE character

  - by prosseek

  The batch file is something like this, I put the python in some directory that has SPACE character in its path. C:\"Documents and Settings"\Administrator\Desktop\bracket\python\python C:\\"Documents and Settings"\\Administrator\\Desktop\\bracket\\[10,20]\\brackettest.py When I run this one, I get this error. C:\Documents and Settings\Administrator\Desktop\bracket\python\python: can't ope n file 'C:\Documents and Settings\\Administrator\\Desktop\\bracket\\[10,20]\\bra ckettest.py': [Errno 2] No such file or directory C:\Documents and Settings\Administrator\Desktop\bracket What might be wrong? Wrapping the path doesn't solve this problem. "C:\\Documents and Settings\\Administrator\\Desktop\\bracket\\[10,20]\\brackettest.py" Are the brackets ('[]') cause of the problem? On Mac, python works well with bracket character.

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• How to specify comma , space unicode value in app.config(C#3.0)

  - by Newbie

  In the app.config file if I use <add key = "FileDelimeter" value ="&#2c;"/> as unicode for COMMA, it is throwing error Invalid character in a decimal number 'c' For SPACE, <add key = "FileDelimeter" value ="&#20;"/> the error is Character'', hex value 0*14 is illegal in xml while <add key = "FileDelimeter" value ="&#09;"/> for "\t" worked. Where is the mistake? Kindly give a generic solution. Thanks

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• What will happen if on my DB server I'll run out of space?

  - by Noam

  I'm seeing a hugh difference of free disk space between df -h and du -sxh / I've understood in my question Resolving unix server disk space not adding up that du -sxh / is a better estimation as to when I will run out of disk space. Having said that, assuming in my case the above sentence will prove to be wrong and I will run soon out of disk space, what will happen? I assume the MySQL will fail INSERT queries, but other than that, will I just need to delete some files or will it be a problematic situation?

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• Unknown Space between 2 Container Divs

  - by Paul

  Im trying to determine why there would be space between 2 Containing Divs as shown, and I would appreciate any insight as to why this is occurring: The unknown space occurs between the mid-feature div (olive) and bottom-wrap div (orange) I have no heights set anywhere. I would like to see the orange div up against the olive div just above it. I can post all of the CSS, or you can FireBug this: www.davincispainting.com Here is all of the CSS: *{ margin:0; padding:0 } body { /*background: url("/images/blueback5.jpg") repeat-x scroll 0 0 transparent;*/ background-color: #9EB0C8; font-family: Arial,Helvetica,sans-serif; font-size: 62.5%; } #top-wrap { height: 126px; width: 940px; /*background-color: Yellow;*/ margin: 5px 0 0 0; } #head-logo { background: url("/images/logo3.png") no-repeat scroll 0 0 transparent; /*background-color: Green;*/ height: 126px; width: 214px; margin: 0px 0 0 58px; position: absolute; z-index: 100; } #submenu1 { border: 0 solid #000000; color: #FFFFFF; /*background-color:Green;*/ font-family: Arial,Impact,Impact5,Charcoal6,sans-serif; font-size: 1.6em; height: 35px; width: 155px; /*padding: 10px 0 0;*/ margin: 7px 0 0 774px; position: absolute; } #submenu2 { /*border: 0 solid #000000;*/ color: #FFFFFF; /*background-color:Blue;*/ font-family: Arial,Impact,Impact5,Charcoal6,sans-serif; font-size: 1.8em; text-align: right; height: 20px; width: 114px; margin: 30px 0 0 818px; /*padding: 5px 0 0;*/ } a.contact { background-image: url("/images/RapidButton2.png"); /*border: 1px solid #CCCCCC;*/ /*clear: both;*/ /*color: #FFFFFF;*/ display: block; font-size: 11px; /*margin-bottom: 1px;*/ /*padding: 3px 5px;*/ text-align: center; width: 165px; height: 27px; } a.contact:hover { background-image: url("/images/RapidButtonHov2.png"); } #navigation-primary { margin: 12px 0 0 276px; position: absolute; } #global-wrap { margin: 0 auto; text-align: left; width: 880px; overflow: hidden; } #global-inner { background: url("/images/main_bg.gif") repeat-y scroll 0 0 #E4EAEF; font-family: Arial; font-size: 1.2em; margin: 15px 0 55px 0; overflow: hidden; text-align: left; width: 880px; } #global-inner .topleft { background: url("/images/main_left_top_corner2.jpg") no-repeat scroll left top transparent; float: left; height: 9px; width: 9px; } #global-inner .topright { background: url("/images/main_right_top_corner2.jpg") no-repeat scroll right top transparent; float: right; height: 9px; width: 9px; } #global-inner .bottomleft { background: url("/images/main_left_bottom_corner.jpg") no-repeat scroll left bottom transparent; float: left; height: 9px; margin-top: -8px; /*margin: 776px 0 0 0;*/ width: 9px; } #global-inner .bottomright { background: url("/images/main_right_bottom_corner.jpg") no-repeat scroll right bottom transparent; float: right; height: 9px; margin-top: -8px; /*margin: 776px 0 0 0;*/ width: 9px; } #top-feature { height:330px; width: 848px; margin: 12px 0 0 16px; background: #E4EAEF; /*background: orange;*/ /*padding: 10px 0 0 10px;*/ position: absolute; text-align: left; } .slideshow { height: 330px; width: 848px; margin: 0 0 0 0; /*background: blue;*/ position: absolute; } #mid-feature { margin:350px 0 0 16px; width:848px; height:318px; background-color:Olive; position:relative; overflow:hidden; } #mid-featureleft { height:318px; width:552px; /*background-color:Purple;*/ float:left; position:relative; } #mid-featureright { height:318px; width:296px; background-color:#B9C1CC; /*background-color: red;*/ float:left; position: relative; } #mid-featureleft h1 { color: #FF0000; font-family: Arial,Helvetica,sans-serif; font-size: 2.1em; } #mid-featureleft .contentbox { padding:7px 7px 7px 7px; } #mid-featureleft p { color: #0C2A55; margin:0px 0 11px 0px; /*font-style:normal;*/ /*width: 97%;*/ /*font-size: .5em;*/ font-size: 12px; } #bottom-wrap { height:60px; width: 868px; margin: auto 0 0 6px; background:orange; position: relative; } #copyright { float: left; /*background-color:Teal;*/ width: 260px; height: 60px; text-align: left; position: absolute; margin:0 0 0 6px; } #bottom-logos { height:60px; width:596px; margin:0 0 0 267px; background: url("/images/logos2.png") no-repeat scroll 0 0 transparent; /*background-color:red;*/ position:absolute; }

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• How can I locate empty space next to polygon regions?

  - by Stephen

  Let's say I have the following area in a top-down map: The circle is the player, the black square is an obstacle, and the grey polygons with red borders are walk-able areas that will be used as a navigation mesh for enemies. Obstacles and grey polygons are always convex. The grey regions were defined using an algorithm when the world was generated at runtime. Notice the little white column. I need to figure out where any empty space like this is, if at all, after the algorithm builds the grey regions, so that I can fill the space with another region. Basically what I'm hoping for is an algorithm that can detect empty space next to a polygon.

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• T-SQL Snack: How Much Free Storage Space is Available?

  - by andyleonard

  Introduction Ever have a need to calculate the total available storage space for a server? Recently I did. Here's a solution I came up with - I bet someone can do this better! xp_fixeddrives There's a handy stored procedure called xp_fixeddrives that reports the available storage space: exec xp_fixeddrives This returns: drive MB free ----- ----------- C 6998 E 201066 Problem solved right? Maybe. The Sum What I really want is the sum total of all available space presented to the server. I built this...(read more)

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• converting 2D mouse coordinates to 3D space in OpenGL ES

  - by Jayesh

  I want to convert mouse's current X and Y coordinates into the 3D space I have drawn in the viewport. I need to do this on the OpenGL ES platform. I found following possible solutions implemented in OpenGL, but none fits what I am looking for. I found NeHe's tutorial on doing exactly this, but in traditional OpenGL way. It uses gluUnProject. http://nehe.gamedev.net/data/articles/article.asp?article=13 Although gluUnProject is not available in OpenGL ES, its implementation seems simple enough to port back. But before calling it, we need to call glReadPixels with GL_DEPTH_COMPONENT and that is not possible in OpenGL ES. (The reason I found in this thread: http://www.khronos.org/message_boards/viewtopic.php?f=4&t=771) What I want to do is similar to picking, except that I don't want to select the object but I want exact coordinates so that I can recognize particular portion of the object that is currently under mouse cursor. I went through the Picking tutorials in this answer. http://stackoverflow.com/posts/2211312/revisions But they need glRenderMode, which I believe is absent in OpenGL ES. If you know how to solve this problem in OpenGL ES, please let me know. Thanks.

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• OutOfMemoryError: Java heap space error when start solr

  - by Hamid

  Hi I start indexing DB articles with solr, but after add about 58 million article (and about 113 GB size of disk) , i get below error message on tomcat log error Note1: i already set Init memory pool to 256MB, and Max memory pool:1400MB to tomcat server. Note2: I can post or search article but must wait over 3 min for get response. 8-apr-2010 14:27:07 org.apache.solr.common.SolrException log SEVERE: java.lang.OutOfMemoryError: Java heap space at org.apache.lucene.util.PriorityQueue.initialize(PriorityQueue.java:89) at org.apache.lucene.search.HitQueue.<init>(HitQueue.java:67) at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:113) at org.apache.lucene.search.TopScoreDocCollector.<init>(TopScoreDocCollector.java:37) at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:42) at org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector.<init>(TopScoreDocCollector.java:40) at org.apache.lucene.search.TopScoreDocCollector.create(TopScoreDocCollector.java:100) at org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:979) at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:884) at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:341) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:182) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1316) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527) at java.lang.Thread.run(Unknown Source) What's problem ? Have any suggestion ? Thanks in advanced

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• Android EditText won't take up remaining space

  - by Jamie

  In my Android app, I have a tabbed Activity. In one of the tabs I have two TextViews and two EditTexts. The first EditText is only one line, and that's fine. However, I want the other EditText, android:id="@+id/paste_code", to take up the remaining space, but no matter what I do to it, it will only show one line. I don't want to manually set the number of lines, since the number that would fit on the screen differs based on your device. Here's the relevant code. It's nested inside all the necessary components for a tabbed Activity. <ScrollView android:id="@+id/basicTab" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Paste title" android:layout_weight="0" /> <EditText android:layout_width="fill_parent" android:layout_height="wrap_content" android:hint="@string/paste_title_hint" android:id="@+id/paste_title" android:lines="1" android:gravity="top|left" android:layout_weight="0" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Paste text" android:layout_weight="0" /> <EditText android:layout_width="fill_parent" android:layout_height="fill_parent" android:hint="@string/paste_hint" android:id="@+id/paste_code" android:gravity="top|left" android:layout_weight="1" /> </LinearLayout> </ScrollView>

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• android compile error: could not reserve enough space for object heap

  - by moonlightcheese

  I'm getting this error during compilation: Error occurred during initialization of VM Could not create the Java virtual machine. Could not reserve enough space for object heap What's worse, the error occurs intermittently. Sometimes it happens, sometimes it doesn't. It seems to be dependent on the amount of code in the application. If I get rid of some variables or drop some imported libraries, it will compile. Then when I add more to it, I get the error again. I've included the following sources into the application in the [project_root]/src/ directory: org.apache.httpclient (I've stripped all references to log4j from the sources, so don't need it) org.apache.codec (as a dependency) org.apache.httpcore (dependency of httpclient) and my own activity code consisting of nothing more than an instance of HttpClient. I know this has something to do with the amount of memory necessary during compile time or some compiler options, and I'm not really stressing my system while i'm coding. I've got 2GB of memory on this Core Duo laptop and windows reports only 860MB page file usage (haven't used any other memory tools. I should have plenty of memory and processing power for this... and I'm only compiling some common http libs... total of 406 source files. What gives? Android API Level: 5 Android SDK rel 5 JDK version: 1.6.0_12

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• android compile error: could not reserve enough space for object heap

  - by moonlightcheese

  I'm getting this error during compilation: Error occurred during initialization of VM Could not create the Java virtual machine. Could not reserve enough space for object heap What's worse, the error occurs intermittently. Sometimes it happens, sometimes it doesn't. It seems to be dependent on the amount of code in the application. If I get rid of some variables or drop some imported libraries, it will compile. Then when I add more to it, I get the error again. I've included the following sources into the application in the [project_root]/src/ directory: org.apache.httpclient (I've stripped all references to log4j from the sources, so don't need it) org.apache.codec (as a dependency) org.apache.httpcore (dependency of httpclient) and my own activity code consisting of nothing more than an instance of HttpClient. I know this has something to do with the amount of memory necessary during compile time or some compiler options, and I'm not really stressing my system while i'm coding. I've got 2GB of memory on this Core Duo laptop and windows reports only 860MB page file usage (haven't used any other memory tools. I should have plenty of memory and processing power for this... and I'm only compiling some common http libs... total of 406 source files. What gives? edit (4/30/2010-18:24): Just compiled some code where I got the above stated error. I closed some web browser windows and recompiled the same exact code with no edits and it compiled with no issue. this is definitely a compiler issue related to memory usage. Any help would be great.... because I have no idea where to go from here. Android API Level: 5 Android SDK rel 5 JDK version: 1.6.0_12 Sorry I had to repost this question because regardless of whether I use the native HttpClient class in the Android SDK or my custom version downloaded from apache, the error still occurs.

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• Draw a column graph with no space between columns

  - by Andrew Shepherd

  I am using the WPF toolkit, and am trying to render a graph that looks like a histogram. In particular, I want each column to be right up against each other column. There should be no gaps between columns. There are a number of components that you apply when creating a column graph. (See example XAML below). Does anybody know if there is a property you can set on one of the elements which refers to the width of the white space between columns? <charting:Chart Height="600" Width="Auto" HorizontalAlignment="Stretch" Name="MyChart" Title="Column Graph" LegendTitle="Legend"> <charting:ColumnSeries Name="theColumnSeries" Title="Series A" IndependentValueBinding="{Binding Path=Name}" DependentValueBinding="{Binding Path=Population}" Margin="0" > </charting:ColumnSeries> <charting:Chart.Axes> <charting:LinearAxis Orientation="Y" Minimum="200000" Maximum="2500000" ShowGridLines="True" /> <charting:CategoryAxis Name="chartCategoryAxis" /> </charting:Chart.Axes> </charting:Chart>

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• C++: Check istream has non-space, non-tab, non-newline characters left without extracting chars

  - by KRao

  I am reading a std::istream and I need to verify without extracting characters that: 1) The stream is not "empty", i.e. that trying to read a char will not result in an fail state (solved by using peek() member function and checking fail state, then setting back to original state) 2) That among the characters left there is at least one which is not a space, a tab or a newline char. The reason for this is, is that I am reading text files containing say one int per line, and sometimes there may be extra spaces / new-lines at the end of the file and this causes issues when I try get back the data from the file to a vector of int. A peek(int n) would probably do what I need but I am stuck with its implementation. I know I could just read istream like: while (myInt << myIstream) {...} //Will fail when I am at the end but the same check would fail for a number of different conditions (say I have something which is not an int on some line) and being able to differentiate between the two reading errors (unexpected thing, nothing left) would help me to write more robust code, as I could write: while (something_left(myIstream)) { myInt << myIstream; if (myStream.fail()) {...} //Horrible things happened } Thank you!

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