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  • Scrape HTML tables from a given URL into CSV

    - by dreeves
    I seek a tool that can be run on the command line like so: tablescrape 'http://someURL.foo.com' [n] If n is not specified and there's more than one HTML table on the page, it should summarize them (header row, total number of rows) in a numbered list. If n is specified or if there's only one table, it should parse the table and spit it to stdout as CSV or TSV. Potential additional features: To be really fancy you could parse a table within a table, but for my purposes -- fetching data from wikipedia pages and the like -- that's overkill. The Perl module HTML::TableExtract can do this and may be good place to start for writing the tool I have in mind. An option to asciify any unicode. An option to apply an arbitrary regex substitution for fixing weirdnesses in the parsed table. Related questions: http://stackoverflow.com/questions/259091/how-can-i-scrape-an-html-table-to-csv http://stackoverflow.com/questions/1403087/how-can-i-convert-an-html-table-to-csv http://stackoverflow.com/questions/2861/options-for-html-scraping

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  • Google App Engine (python): TemplateSyntaxError: 'for' statements with five words should end in 'rev

    - by Phil
    This is using the web app framework, not Django. The following template code is giving me an TemplateSyntaxError: 'for' statements with five words should end in 'reversed' error when I try to render a dictionary. I don't understand what's causing this error. Could somebody shed some light on it for me? {% for code, name in charts.items %} <option value="{{code}}">{{name}}</option> {% endfor %} I'm rendering it using the following: class GenerateChart(basewebview): def get(self): values = {"datepicker":True} values["charts"] = {"p3": "3D Pie Chart", "p": "Segmented Pied Chart"} self.render_page("generatechart.html", values) class basewebview(webapp.RequestHandler): ''' Base class for all webapp.RequestHandler type classes ''' def render_page(self, filename, template_values=dict()): filename = "%s/%s" % (_template_dir, filename) path = os.path.join(os.path.dirname(__file__), filename) self.response.out.write(template.render(path, template_values))

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  • Get the selected drop down list value from a FormCollection in MVC

    - by James Santiago
    I have a form posting to an action with MVC. I want to pull the selected drop down list item from the FormCollection in the action. How do I do it? My Html form: <% using (Html.BeginForm()) {%> <select name="Content List"> <% foreach (String name in (ViewData["names"] as IQueryable<String>)) { %> <option value="<%= name %>"><%= name%></option> <% } %> </select> <p><input type="submit" value="Save" /></p> <% } %> My Action: [HttpPost] public ActionResult Index(FormCollection collection) { //how do I get the selected drop down list value? String name = collection.AllKeys.Single(); return RedirectToAction("Details", name); }

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  • Filtering a dropdown in Angular IE11 issue

    - by Brian S.
    I have a requirement for a select html element that can be duplicated multiple times on a page. The options for these select elements all come from a master list. All of the select elements can only show all of the items in the master list that have not been selected in any of the other select elements unless they just were duplicated. So I wrote a custom filter to do this in Angular and it seems to work just fine provided you are not using IE11. In IE when you select a new item from a duplicated select element, it seems to select the option after the one you selected even though the model still has the correct one set. I realize this sounds convoluted, so I created a jFiddle example. Using IE 11 try these steps: Select Bender Click the duplicate link Select Fry Notice that the one that is selected is Leela but the model still has Fry (id:2) as the one selected Now if you do the same thing in Chrome everything works as expected. Can anyone tell me how I might get around this or what I might be doing wrong? Here is the relevant Angular code: myapp.controller('Ctrl', function ($scope) { $scope.selectedIds = [{}]; $scope.allIds = [{ name: 'Bender', value: 1}, {name: 'Fry', value: 2}, {name: 'Leela', value: 3 }]; $scope.dupDropDown = function(currentDD) { var newDD = angular.copy(currentDD); $scope.selectedIds.push(newDD); } }); angular.module('appFilters',[]).filter('ddlFilter', function () { return function (allIds, currentItem, selectedIds) { //console.log(currentItem); var listToReturn = allIds.filter(function (anIdFromMasterList) { if (currentItem.id == anIdFromMasterList.value) return true; var areThereAny = selectedIds.some(function (aSelectedId) { return aSelectedId.id == anIdFromMasterList.value; }); return !areThereAny; }); return listToReturn; } }); And here is the relevant HTML <div ng-repeat="aSelection in selectedIds "> <a href="#" ng-click="dupDropDown(aSelection)">Duplicate</a> <select ng-model="aSelection.id" ng-options="a.value as a.name for a in allIds | ddlFilter:aSelection:selectedIds"> <option value="">--Select--</option> </select> </div>

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  • getting firewatir to run on mac osx: jssh problems

    - by z3cko
    I am trying to get firewatir to run on Mac OSX Leopard. I have Firefox 3.6rc2 installed but running the most simple script does not work: require 'rubygems' require 'firewatir' ff=FireWatir::Firefox.new ff.goto("http://mail.yahoo.com") i am getting the following error /usr/local/lib/ruby/gems/1.8/gems/firewatir-1.6.5/lib/firewatir/firefox.rb:237:in `set_defaults': Unable to connect to machine : 127.0.0.1 on port 9997. Make sure that JSSh is properly installed and Firefox is running with '-jssh' option (Watir::Exception::UnableToStartJSShException) from /usr/local/lib/ruby/gems/1.8/gems/firewatir-1.6.5/lib/firewatir/firefox.rb:131:in `initialize' from ./watir-test.rb:12:in `new' from ./watir-test.rb:12 even when I am trying to start Firefox with the -jssh option, I get an error (although another one) /Applications/Firefox.app/Contents/MacOS/firefox-bin -jssh the error output in that case: /usr/local/lib/ruby/gems/1.8/gems/firewatir-1.6.5/lib/firewatir/firefox.rb:125:in `initialize': Firefox is running without -jssh (RuntimeError) is there any tutorial or hnt to get firewatir actually running on Mac OSX?

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  • Trying to Host Server for External Access - Apache, VirtualBox & Portforwarding

    - by Tspoon
    Banging my head on the wall at this stage.... trying to host my Apache site on Ubuntu 12.10 with VirtualBox. Running Windows 8 host. Things I've done: Ensured Apache is listening on ports 80, 443 and 8080 (for thoroughness) tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 3355/httpd tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 3355/httpd tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3355/httpd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 681/sshd VM is using bridged network connection Assigned a static IP to my Ubuntu VM, which can be accessed fine from within network. Forwarded TCP ports 80, 8080, 443 on the static IP of VM on my router Given my VM a static NAT Address Turned off Ubuntu firewall and router firewall Read on forums that my ISP (Eircom) allow port 80 to be used And I still can't access my site using the WAN/External IP (checked internally and using CanYouSeeMe.org). It says all the ports I mentioned are closed. I'm really at a loss of what to try next... Am I missing something silly here? Note: I haven't assigned a static IP address within the router, on within the VM. And DHCP server is enabled. Is that bad?

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  • Difficulty getting Saxon into XQuery mode instead of XSLT

    - by Rosarch
    I'm having difficulty getting XQuery to work. I downloaded Saxon-HE 9.2. It seems to only want to work with XSLT. When I type: java -jar saxon9he.jar I get back usage information for XSLT. When I use the command syntax for XQuery, it doesn't recognize the parameters (like -q), and gives XSLT usage information. Here are some command line interactions: >java -jar saxon9he.jar No source file name Saxon-HE 9.2.0.6J from Saxonica Usage: see http://www.saxonica.com/documentation/using-xsl/commandline.html Options: -a Use xml-stylesheet PI, not -xsl argument -c:filename Use compiled stylesheet from file -config:filename Use configuration file -cr:classname Use collection URI resolver class -dtd:on|off Validate using DTD -expand:on|off Expand defaults defined in schema/DTD -explain[:filename] Display compiled expression tree -ext:on|off Allow|Disallow external Java functions -im:modename Initial mode -ief:class;class;... List of integrated extension functions -it:template Initial template -l:on|off Line numbering for source document -m:classname Use message receiver class -now:dateTime Set currentDateTime -o:filename Output file or directory -opt:0..10 Set optimization level (0=none, 10=max) -or:classname Use OutputURIResolver class -outval:recover|fatal Handling of validation errors on result document -p:on|off Recognize URI query parameters -r:classname Use URIResolver class -repeat:N Repeat N times for performance measurement -s:filename Initial source document -sa Use schema-aware processing -strip:all|none|ignorable Strip whitespace text nodes -t Display version and timing information -T[:classname] Use TraceListener class -TJ Trace calls to external Java functions -tree:tiny|linked Select tree model -traceout:file|#null Destination for fn:trace() output -u Names are URLs not filenames -val:strict|lax Validate using schema -versionmsg:on|off Warn when using XSLT 1.0 stylesheet -warnings:silent|recover|fatal Handling of recoverable errors -x:classname Use specified SAX parser for source file -xi:on|off Expand XInclude on all documents -xmlversion:1.0|1.1 Version of XML to be handled -xsd:file;file.. Additional schema documents to be loaded -xsdversion:1.0|1.1 Version of XML Schema to be used -xsiloc:on|off Take note of xsi:schemaLocation -xsl:filename Stylesheet file -y:classname Use specified SAX parser for stylesheet --feature:value Set configuration feature (see FeatureKeys) -? Display this message param=value Set stylesheet string parameter +param=filename Set stylesheet document parameter ?param=expression Set stylesheet parameter using XPath !option=value Set serialization option >java -jar saxon9he.jar -q:"..\w3xQueryTut.xq" Unknown option -q:..\w3xQueryTut.xq Saxon-HE 9.2.0.6J from Saxonica Usage: see http://www.saxonica.com/documentation/using-xsl/commandline.html Options: -a Use xml-stylesheet PI, not -xsl argument // etc... >java net.sf.saxon.Query -q:"..\w3xQueryTut.xq" Exception in thread "main" java.lang.NoClassDefFoundError: net/sf/saxon/Query Caused by: java.lang.ClassNotFoundException: net.sf.saxon.Query // etc... Could not find the main class: net.sf.saxon.Query. Program will exit. I'm probably making some stupid mistake. Do you know what it could be?

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  • NameValueCollection vs Dictionary<string,string>

    - by frankadelic
    Any reason I should use Dictionary<string,string instead of NameValueCollection? (in C# / .NET Framework) Option 1, using NameValueCollection: //enter values: NameValueCollection nvc = new NameValueCollection() { {"key1", "value1"}, {"key2", "value2"}, {"key3", "value3"} }; // retrieve values: foreach(string key in nvc.AllKeys) { string value = nvc[key]; // do something } Option 2, using Dictionary<string,string... //enter values: Dictionary<string, string> dict = new Dictionary<string, string>() { {"key1", "value1"}, {"key2", "value2"}, {"key3", "value3"} }; // retrieve values: foreach (KeyValuePair<string, string> kvp in dict) { string key = kvp.Key; string val = kvp.Value; // do something } For these use cases, is there any advantage to use one versus the other? Any difference in performance, memory use, sort order, etc.?

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  • Set up a GUI managed stateful filtering firewall?

    - by Azendale
    What ways are there of setting up a stateful filtering* firewall whose rules can be managed by a GUI? Can GUFW do it? FireStarter? (or should that be avoided because it is supposedly no longer updated?) *By filtering, I'm mean the traffic I am setting rules up for is not destined for this computer. It is either from or to other computers on my LAN. Say, for (a simplified, hypothetical) example: I have an ethernet connection at my dorm that I have plugged into eth0. It gets an address of 192.168.1.185 and I also have 192.168.185.0/24 routed to me, so I don't have to do any NAT. I have a hub attached to my second ethernet port (eth1) with a few Windows computers and I give addresses out of my 192.168.185.0/24 block with DHCP. How can I use my Ubuntu box to block incoming connections from eth0 that are being routed to my Windows computers and let through just a few specific ports (so fellow students can't see what files my Windows boxes are sharing via SMB)?

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  • jQuery: how can I clear content without getting the dreaded "stop running this script?" dialog?

    - by Cheeso
    I have a div, that holds a div. like this: <div id='reportHolder' class='column'> <div id='report'> </div> </div> Within the inner div, I add a bunch (7-12) of pairs of a and div elements, like this: <h4><a>Heading1</a></h4> <div> ...content here....</div> The total size of the content, is maybe 200k. Each div just contains a fragment of HTML. After I add all the content, I then create an accordion. like this: $('#report').accordion({collapsible:true, active:false}); This all works fine. The problem is, when I try to clear or remove the report div, it takes a looooooong time, and I get 3 or 4 popups asking "Do you want to stop running this script?" I have tried several ways: option 1: $('#report').accordion('destroy'); $('#report').remove(); $("#reportHolder").html("<div id='report'> </div>"); option 2: $('#report').accordion('destroy'); $('#report').html(''); $("#reportHolder").html("<div id='report'> </div>"); option 3: $('#report').accordion('destroy'); $("#reportHolder").html("<div id='report'> </div>"); No matter what, it hangs for a long while. The call to accordion('destroy') seems to not be the source of the delay. It's the erasure of the html content within the report div. EDIT - fixed typo. ps: this happens on FF3.5 as well as IE8 . Questions: What is taking so long? How can I remove content more quickly?

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  • SecurityException when accessing (ejb2-) session bean via local interface in JBoss 5

    - by sme
    I have the following problem with an EJB 2 SessionBean when deploying in JBoss 5: The SessionBean (called LVSKeepAliveDispatcher) requires a specific user role (called "LVSUser"), specified by <method-permission > <description></description> <role-name>LVSUser</role-name> <method > <description></description> <ejb-name>LVSKeepAliveDispatcher</ejb-name> <method-name>*</method-name> </method> </method-permission> in ejb-jar.xml. I now want to access this SessionBean from a Service (i.e. a class implementing the org.jboss.varia.scheduler.Schedulable interface that is then registered as a service) running inside the same JBoss instance. This is my jboss-service.xml: <server> <mbean code="org.jboss.varia.scheduler.Scheduler" name="lvs:service=TranslationService"> <attribute name="StartAtStartup">true</attribute> <attribute name="SchedulableClass">de.repower.lvs.server.service.translation.TranslationService</attribute> <attribute name="SchedulableArguments"></attribute> <attribute name="SchedulableArgumentTypes"></attribute> <attribute name="InitialStartDate">NOW</attribute> <attribute name="SchedulePeriod">60000</attribute> <attribute name="InitialRepetitions">1</attribute> <attribute name="TimerName">jboss:service=Timer,name=TranslationServiceTimer</attribute> <depends><mbean code="javax.management.timer.Timer" name="jboss:service=Timer,name=TranslationServiceTimer"/></depends> <depends>jboss.j2ee:service=EJB,jndiName=de/repower/lvs/i18n/sessionbeans/LVSTranslation</depends> </mbean> As the service is deployed in the same vm as the session bean I want to call the session bean via the local interface, but I get a SecurityException when I try to create an instance. When instead I do a lookup of the RemoteInterface it works. This is the code inside the perform method of my service class: public void perform(Date now, long remainingRepetitions) { try { final UsernamePasswordHandler handler = new UsernamePasswordHandler(USERNAME, PASSWORD); final LoginContext lc = new LoginContext("client-login", handler); lc.login(); // Trying to instantiate an LVSKeepAliveDispatcher via remote interface // This part works LVSKeepAliveDispatcher localvHome = LVSKeepAliveDispatcherUtil.getHome().create(); LOGGER.info("Successfully instantiated an LVSKeepAliveDispatcher " + localvHome.toString()); // Trying to instantiate an LVSKeepAliveDispatcherLocal via local interface LVSKeepAliveDispatcherLocal localvLocalHome = LVSKeepAliveDispatcherUtil.getLocalHome().create(); // this code is unforunately never reached LOGGER.info("Successfully instantiated an LVSKeepAliveDispatcherLocal " + localvLocalHome.toString()); lc.logout(); } catch (final Exception ex) { LOGGER.error("Error: ", ex); } } Exception: 2009-02-17 10:38:02,266 INFO [lvsi18n] (Timer-2) Successfully instantiated an LVSKeepAliveDispatcher de/repower/lvs/server/service/alive/sessionbeans/LVSKeepAliveDispatcher:Stateless 2009-02-17 10:38:02,297 ERROR [org.jboss.ejb.plugins.SecurityInterceptor] (Timer-2) Error in Security Interceptor java.lang.SecurityException: Authentication exception, principal=internalSystemUser at org.jboss.ejb.plugins.SecurityInterceptor.checkSecurityContext(SecurityInterceptor.java:321) at org.jboss.ejb.plugins.SecurityInterceptor.process(SecurityInterceptor.java:243) at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:205) at org.jboss.ejb.plugins.security.PreSecurityInterceptor.process(PreSecurityInterceptor.java:136) at org.jboss.ejb.plugins.security.PreSecurityInterceptor.invokeHome(PreSecurityInterceptor.java:88) at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:132) at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:107) at org.jboss.ejb.SessionContainer.internalInvokeHome(SessionContainer.java:639) at org.jboss.ejb.Container.invoke(Container.java:1046) at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invokeHome(BaseLocalProxyFactory.java:362) at org.jboss.ejb.plugins.local.LocalHomeProxy.invoke(LocalHomeProxy.java:133) at $Proxy193.create(Unknown Source) at de.repower.lvs.server.service.translation.TranslationService.perform(TranslationService.java:68) at org.jboss.varia.scheduler.Scheduler$PojoScheduler.invoke(Scheduler.java:1267) at org.jboss.varia.scheduler.Scheduler$BaseListener.handleNotification(Scheduler.java:1235) at sun.reflect.GeneratedMethodAccessor281.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.mx.notification.NotificationListenerProxy.invoke(NotificationListenerProxy.java:153) at $Proxy87.handleNotification(Unknown Source) at javax.management.NotificationBroadcasterSupport.handleNotification(NotificationBroadcasterSupport.java:257) at javax.management.NotificationBroadcasterSupport$SendNotifJob.run(NotificationBroadcasterSupport.java:322) at javax.management.NotificationBroadcasterSupport$1.execute(NotificationBroadcasterSupport.java:307) at javax.management.NotificationBroadcasterSupport.sendNotification(NotificationBroadcasterSupport.java:229) at javax.management.timer.Timer.sendNotification(Timer.java:1234) at javax.management.timer.Timer.notifyAlarmClock(Timer.java:1203) at javax.management.timer.TimerAlarmClock.run(Timer.java:1286) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) To further diagnose the error I debugged through the SecurityInterceptor and found that in the first case (successful creating an instance via the remote interface) the security context "lvs-security" (which I defined in login-config.xml) is being used whereas in the second case (failure when creating an instance via the local interface) the generic security context "CLIENT-LOGIN" is being used. This is the definition of the securit context "lvs-security" in login-config.xml: <application-policy name = "lvs-security"> <authentication> <login-module code = "org.jboss.security.ClientLoginModule" flag = "required"> </login-module> <login-module code = "de.repower.lvs.security.UsersRolesLoginModule" flag = "sufficient"> </login-module> <login-module code = "de.repower.lvs.security.login.LVSLoginModule" flag = "required"> <module-option name = "lvs-jboss-host">localhost</module-option> <module-option name = "lvs-jboss-jndi-port">1099</module-option> </login-module> </authentication> </application-policy> I'm now kind of stuck and hope someone can give me a hint about where to further look for the cause of the problem. This worked fine in JBoss 3.2.7. Edit: My current workaround for this problem: create a new container configuration in jboss.xml and remove the security interceptor stuff from this configuration use this newly created container configuration for all my session beans that I only use locally (i.e. via local interface).

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  • Visual Studio 2008 macro only works from the Macro IDE, not the Macro Explorer

    - by Cat
    Edit: Creating a new module in the same VSMacros project fixed the problem. The following macro only works if I open the Macro IDE from Visual Studio and run the macro from there. It'd be much more useful if I could just right click the macro from the Macro Explorer from my Visual Studio instance. I must be doing something obviously wrong, but I've never worked with VS macros before. The MessageBox does not appear in either case. Option Strict Off Option Explicit Off Imports System Imports EnvDTE Imports EnvDTE80 Imports EnvDTE90 Imports System.Diagnostics Imports System.Security.Principal Imports System.Windows.Forms Public Module AttachToSdtProcess Sub AttachToSdtProcess() Try 'If MessageBox.Show("Attach to SDT.exe", "Caption", _ ' MessageBoxButtons.OKCancel) = DialogResult.Cancel Then 'Return 'End If Dim dbg2 As EnvDTE80.Debugger2 = DTE.Debugger Dim trans As EnvDTE80.Transport = dbg2.Transports.Item("Default") Dim compName As String = WindowsIdentity.GetCurrent().Name compName = compName.Substring(0, compName.IndexOf("\")) Dim proc2 As EnvDTE80.Process2 = _ dbg2.GetProcesses(trans, compName).Item("TheExecutable.exe") If proc2 Is Nothing Then MessageBox.Show("Could not find TheExecutable.exe") End If proc2.Attach2(dbgeng) Catch ex As System.Exception MsgBox(ex.Message) End Try End Sub End Module

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  • Sql Server 2008 Install

    - by Steve
    I already have Visual Studio 2008 installed. When installing developer Sql Server 2008, do I need to check the Business Intelligence Development Studio option? I'm guessing not. I assume if I already have VS 2008, the install will just add the relevant Sql Server related project types into VS 2008. EDIT: I marked the question answered before I did the install - I've installed Sql Server before and I thought this was what happened, but on doing this install, leaving the BI studio option unchecked does NOT install the SQL Server projects in Visual Studio. I had to go back and install it, so the answer is... Check it! I was overthinking the install - it's smart enough not to install VS twice.

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  • Small standalone SQL database similar to access in the old days(ie file database)

    - by Ian
    Hi, I am looking for a easy to use and deploy sql type database i can ship with a desktop application. This will be a small application user's can download from my website. In the vb6 days, access was the common database for small desktop apps, what is my option these days? Looking at SQL CE it seems to have a quite a few limitations such as count(distinct) etc SQL express needs to be installed and running as a service (could i include the SQL express deployments in my deployment so the user doesn't even know its been installed? I assume size would then be an issue) SQL 2005/2008 is not an option due to size and licensing restrictions. I would like to use c#, wpf and entity framework. What would seem to be the best options based on your knowledge and experience? Thanks

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  • Silverlight 4 - elevated permission *inside* the browser

    - by Doug
    I know Silverlight 4 can handle elevated permissions outside the browser. Is there a way to accomplish this inside the browser? I need to make a folder/file upload manager that gives a better user experience than the standard , and I'd like to implement it in Silverlight. I know Java has an option to gain elevated permissions, but you have to attach a signed certificate to your app. Does Silverlight 4 have a similar option - to gain elevated permissions by attaching a signed certificate (after warning the user, of course)? -Doug

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  • Subclipse > Accidental Merge Conflict Resolution

    - by DTS
    I'm trying to merge changes from one branch into another using Subclipse. On a particular file in a particular subdirectory, I had a file conflict and edited the conflicts via the context menu option for this. However, when I went to resolve the conflict I apparently chose the wrong option and was left with the original unmerged file in my branch. Since then, I can no longer get this file back into a conflicted state so I can resolve this issue properly. I've tried deleting the file and the directory that contains it, to no avail. Any ideas?

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  • What disables "Run Project" in Expression Blend 3

    - by Hugh
    I am developing a Sketchflow (Silverlight) project in Expression Blend 3. It has been working fine up until today, now I cannot run the project. Specifically in the Project menu the "Run Project" option is now greyed out (all the other options are fine). F5 also doesn't have any effect. I've obviously messed up the code somewhere but I can't find any information on what could cause the "Run Project" option to be disabled. This would obviously help the troubleshooting. Does anybody know what controls this functionality? I can build the project no problem. And if I package the project (so it runs outside Expression) this also works fine. It is just launching it from Expression that doesn't work.

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  • Tracking unique versions of files with hashes

    - by rwmnau
    I'm going to be tracking different versions of potentially millions of different files, and my intent is to hash them to determine I've already seen that particular version of the file. Currently, I'm only using MD5 (the product is still in development, so it's never dealt with millions of files yet), which is clearly not long enough to avoid collisions. However, here's my question - Am I more likely to avoid collisions if I hash the file using two different methods and store both hashes (say, SHA1 and MD5), or if I pick a single, longer hash (like SHA256) and rely on that alone? I know option 1 has 288 hash bits and option 2 has only 256, but assume my two choices are the same total hash length. Since I'm dealing with potentially millions of files (and multiple versions of those files over time), I'd like to do what I can to avoid collisions. However, CPU time isn't (completely) free, so I'm interested in how the community feels about the tradeoff - is adding more bits to my hash proportionally more expensive to compute, and are there any advantages to multiple different hashes as opposed to a single, longer hash, given an equal number of bits in both solutions?

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  • Asynchronous subprocess on Windows

    - by Stigma
    First of all, the overall problem I am solving is a bit more complicated than I am showing here, so please do not tell me 'use threads with blocking' as it would not solve my actual situation without a fair, FAIR bit of rewriting and refactoring. I have several applications which are not mine to modify, which take data from stdin and poop it out on stdout after doing their magic. My task is to chain several of these programs. Problem is, sometimes they choke, and as such I need to track their progress which is outputted on STDERR. pA = subprocess.Popen(CommandA, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE) # ... some more processes make up the chain, but that is irrelevant to the problem pB = subprocess.Popen(CommandB, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=pA.stdout ) Now, reading directly through pA.stdout.readline() and pB.stdout.readline(), or the plain read() functions, is a blocking matter. Since different applications output in different paces and different formats, blocking is not an option. (And as I wrote above, threading is not an option unless at a last, last resort.) pA.communicate() is deadlock safe, but since I need the information live, that is not an option either. Thus google brought me to this asynchronous subprocess snippet on ActiveState. All good at first, until I implement it. Comparing the cmd.exe output of pA.exe | pB.exe, ignoring the fact both output to the same window making for a mess, I see very instantaneous updates. However, I implement the same thing using the above snippet and the read_some() function declared there, and it takes over 10 seconds to notify updates of a single pipe. But when it does, it has updates leading all the way upto 40% progress, for example. Thus I do some more research, and see numerous subjects concerning PeekNamedPipe, anonymous handles, and returning 0 bytes available even though there is information available in the pipe. As the subject has proven quite a bit beyond my expertise to fix or code around, I come to Stack Overflow to look for guidance. :) My platform is W7 64-bit with Python 2.6, the applications are 32-bit in case it matters, and compatibility with Unix is not a concern. I can even deal with a full ctypes or pywin32 solution that subverts subprocess entirely if it is the only solution, as long as I can read from every stderr pipe asynchronously with immediate performance and no deadlocks. :)

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  • [MINI HOW-TO] Remove a Network Computer from Windows Home Server

    - by Mysticgeek
    One of the cool features of Windows Home Server is the ability to backup and monitor the computers on your network. If you no longer need a machine on to be monitored or backed up, here we show you how to remove it. Remove Computer from WHS The process if straight-forward and basic –Open Windows Home Server Console and click on Computers & Backup. Right-click on the computer that you no longer need and click Remove. You’ll be prompted to verify that you want to remove the machine and delete all of its backup data. Check the box I am sure I want to remove this computer then click the Remove button. That’s all there is to it! The computer and all of its backup data is removed. Remember that if you remove a computer, all of its backup data will be deleted as well. If you no longer have the computer, you probably don’t need the backed up data anyway, but you’ll want to be sure you no longer need it before removing it. Similar Articles Productive Geek Tips GMedia Blog: Setting Up a Windows Home ServerRestore Files from Backups on Windows Home ServerCreate A Windows Home Server Home Computer Restore DiscInstalling Windows Home ServerChange Ubuntu Server from DHCP to a Static IP Address TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Beware Hover Kitties Test Drive Mobile Phones Online With TryPhone Ben & Jerry’s Free Cone Day, 3/23/10 New Stinger from McAfee Helps Remove ‘FakeAlert’ Threats Google Apps Marketplace: Tools & Services For Google Apps Users Get News Quick and Precise With Newser

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  • Install a vimball from the command line.

    - by Robert Massaioli
    As this post points out you can install Vimballs using the normal: vim somevimball.vba :so % :q But if you want to install a from the command line how do you do it? I ran a 'man vim' and it seems like the best "from source install" option was the '-S' option so I tried to install haskellmode with it: wget 'http://projects.haskell.org/haskellmode-vim/vimfiles/haskellmode-20090430.vba' vim -S haskellmode-20090430.vba and that failed to work. It gave me the following error: Error detected while processing function vimball#Vimball: line 10: (Vimball) The current file does not appear to be a Vimball! press ENTER or type command to continue It should be noted that using the first method I was able to successfully install the vimball. I have tried the second method on a few other vimballs and it has failed every time. Is there a way to install a vimball from the command line? It seems like a useful sort of task. Oh, and I am running the following version of vim: Version: 2:7.2.330-1ubuntu3 Thanks.

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  • Git exclude a commit in a branch

    - by becomingGuru
    I have a commit, I have stored in a branch, because this should go only to a specific box. I have merged it to the branch master, but not the branch dev, that I use locally. Now, by mistake I merged master to dev and that introduced this commit to dev. I know can git revert sha, to branch dev; but since this is going to introduce a commit that undoes that commit (I am guessing, I haven't exactly tried this), when I merge master, will this commit be undone too? If so, how do I undo this commit only from the branch dev. And oh, git reset HEAD^1 --hard is not an option because there are other commits on master, after the un-needed commit. If reset back again and apply is the only option, then how do I only merge those extra commits from master other than the un-needed commit. Thanks in advance!

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  • POX return data from WCF Data Services

    - by keithwarren7
    I am using WCF Data Services (netfx4) to provide data sourced from SQL via EF, the standard OData mechanism is fine and JSON works as well but I need a third option for generic POX (plain old xml). I have yet to come across a simple strategy or switch that allows me to control this but I am sure one must exist or a workaround method might be available. Any ideas? Ideally I would like to be able to use something like the JSONP option wherein I append 'format=JSON' to the URL, in this case 'format=pox' or 'POX=true' or something of that nature.

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