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  • Is it possible to get the exit code from a subshell?

    - by Geo
    Let's imagine I have a bash script, where I call this: bash -c "some_command" do something with code of some_command here Is it possible to obtain the code of some_command? I'm not executing some_command directly in the shell running the script because I don't want to alter it's environment.

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  • how to design a calendar control

    - by dhh
    I need to design a calendar control which should be added to our companie's application (I know there's already quite a lot calendar controls but I shall develop our own one...). How should I start, should I use a kind of table to display the days or should I completely draw my own grid? How can I do this (I do not need rdy-to-use code, I just need some ideas...)

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  • how does object programming work?

    - by venom
    Hello, I am not sure about some things in oop. If I have Class1, which has some private field, for example private Field field1, and make getField1(){return field1;} then I have some class with constructor public Class2(Field field){someMethod(field);} And then I call constructor of Class2 in Class3 like: Class2 cl = new Class2(instanceOfClass1.getField1()); And now the question: Am I working with field1 of instanceOfClass1 in "someMethod(field)"?

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  • Crystal Reports API - chart: "for all records" or "for each record"?

    - by Epaga
    Is there any way to determine whether a chart in Crystal Reports 2008 (using either the RAS SDK or the older RDC API) is set to display values "for each record" or "for all records"? I can get access to a CrystalDecisions.ReportAppServer.ReportDefModel.ChartObject but can't find any API there to access which type of chart it is - "for each" or "for all".

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  • Applying pagination options to a one-to-many list in Grails

    - by UltraVi01
    I have a User class that hasMany = [friends:User] Now I am trying to display the friends list - ${user.friends} However, I'd like to be able to apply parameters like I can with, for example, User.findAllBy(user, [max:10, sort: 'dateCreated', order: 'desc"]) Can someone kindly tell me how to do this on a one-to-many in Grails / Groovy ?

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  • Convert number into words using flex.

    - by charlie
    Hi I am trying to convert an entry using a numeric stepper in flex into words to display in a textarea. i.e a user uses the stepper to enter "89" as a value and in the text area the words "Eighty nine" are displayed. After much searching i haven't found anything that helps - a few javascript functions but that is all. any help sample code would be much appreciated. thanks in advance.

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  • Twisted: why is it that passing a deferred callback to a deferred thread makes the thread blocking a

    - by surtyaarthoughts
    I unsuccessfully tried using txredis (the non blocking twisted api for redis) for a persisting message queue I'm trying to set up with a scrapy project I am working on. I found that although the client was not blocking, it became much slower than it could have been because what should have been one event in the reactor loop was split up into thousands of steps. So instead, I tried making use of redis-py (the regular blocking twisted api) and wrapping the call in a deferred thread. It works great, however I want to perform an inner deferred when I make a call to redis as I would like to set up connection pooling in attempts to speed things up further. Below is my interpretation of some sample code taken from the twisted docs for a deferred thread to illustrate my use case: #!/usr/bin/env python from twisted.internet import reactor,threads from twisted.internet.task import LoopingCall import time def main_loop(): print 'doing stuff in main loop.. do not block me!' def aBlockingRedisCall(): print 'doing lookup... this may take a while' time.sleep(10) return 'results from redis' def result(res): print res def main(): lc = LoopingCall(main_loop) lc.start(2) d = threads.deferToThread(aBlockingRedisCall) d.addCallback(result) reactor.run() if __name__=='__main__': main() And here is my alteration for connection pooling that makes the code in the deferred thread blocking : #!/usr/bin/env python from twisted.internet import reactor,defer from twisted.internet.task import LoopingCall import time def main_loop(): print 'doing stuff in main loop.. do not block me!' def aBlockingRedisCall(x): if x<5: #all connections are busy, try later print '%s is less than 5, get a redis client later' % x x+=1 d = defer.Deferred() d.addCallback(aBlockingRedisCall) reactor.callLater(1.0,d.callback,x) return d else: print 'got a redis client; doing lookup.. this may take a while' time.sleep(10) # this is now blocking.. any ideas? d = defer.Deferred() d.addCallback(gotFinalResult) d.callback(x) return d def gotFinalResult(x): return 'final result is %s' % x def result(res): print res def aBlockingMethod(): print 'going to sleep...' time.sleep(10) print 'woke up' def main(): lc = LoopingCall(main_loop) lc.start(2) d = defer.Deferred() d.addCallback(aBlockingRedisCall) d.addCallback(result) reactor.callInThread(d.callback, 1) reactor.run() if __name__=='__main__': main() So my question is, does anyone know why my alteration causes the deferred thread to be blocking and/or can anyone suggest a better solution?

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  • Disabling Scrollbars in WebKit

    - by Aram Havarneanu
    Hello, I'm embedding WebKit in a Windows C++ Application. I'm using the Cairo port. It works fine. I'd like to disable the scrollbars that appear when there's more data that the client area can display. Like the iPhone, the iPhone does not have scrollbars, scrolling is implemented differently. How can I disable the scrollbars programatically, in C++ (no Javascript hacks)? Thanks,

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  • Show bit Column as a checkbox column in unbound Datagridview

    - by Name.IsNullOrEmpty
    Dim Comp = From C In db.Table1 _ Select C.Completed, C.Taken, C.Namne Datagridview1.DataSource = Comp Am using the Entity Framework and Columns Completed and Taken are of bit Datatype. When the query results are displayed in the datagridview, these bit columns are returned as of ColumnType Textbox - so i get a Datagridview textbox column with true or false string values. I want to display Completed and Taken as Checkbox columns (either ticked for True or un-ticked for false) but ofcourse i can't do this in EditColumn dialogue because the Datagridview is unbound. how can i change this in code at runtime

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  • ASP.net feedback form

    - by c11ada
    hey all, i want to implement a sort of feedback form/survey form in asp.net which is linked to a database. can any one help on any good tutorials or articles i want to create a asp.net application which will take questions from a database then display them on the form. once the user has finished the survey the results will be stored into the database. can any one help me !!

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  • calling UIview methdods

    - by mindfreak
    I want to call this method in a user defined function (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation Is it possible ?? if yes,How ?? Pl. guide me.

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  • Problems with JQuery's Droppable Tolerance 'fit' feature when using the same size divs

    - by Chris
    Hi I'm just wondering if anybody else can manage to get the tolerance:'fit' option to work when using the 'droppable' feature in jQuery's UI? I want to call a function only when the draggable div is dropped perfectly onto a droppable div. Both divs are the same size and I'm using snapMode:outer to help the end user. I simply cannot get it to work with 'fit'. Works perfectly with 'intersect'. Would really appreciate some help. Thanks Chris

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  • Web request timeout in c#

    - by victor_foster
    I am trying to make a web service request call to a third part web site who's server is a little unreliable. Is there a way I can set a timeout on a request to this site? Something like this pseudo code: try for 1 minute { // Make web request here using (WebClient client new WebClient())...etc. } catch { }

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  • Adding objects to an NSMutableArray, order seems odd when parsing from an XML file

    - by diatrevolo
    Hello: I am parsing an XML file for two elements: "title" and "noType". Once these are parsed, I am adding them to an object called aMaster, an instance of my own Master class that contains NSString variables. I am then adding these instances to an NSMutableArray on a singleton, in order to call them elsewhere in the program. The problem is that when I call them, they don't seem to be on the same NSMutableArray index... each index contains either the title OR the noType element, when it should be both... can anyone see what I may be doing wrong? Below is the code for the parser. Thanks so much!! #import "XMLParser.h" #import "Values.h" #import "Listing.h" #import "Master.h" @implementation XMLParser @synthesize sharedSingleton, aMaster; - (XMLParser *) initXMLParser { [super init]; sharedSingleton = [Values sharedValues]; aMaster = [[Master init] alloc]; return self; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict { aMaster = [[Master alloc] init]; //Extract the attribute here. if ([elementName isEqualToString:@"intro"]) { aMaster.intro = [attributeDict objectForKey:@"enabled"]; } else if ([elementName isEqualToString:@"item"]) { aMaster.item_type = [attributeDict objectForKey:@"type"]; //NSLog(@"Did find item with type %@", [attributeDict objectForKey:@"type"]); //NSLog(@"Reading id value :%@", aMaster.item_type); } else { //NSLog(@"No known elements"); } //NSLog(@"Processing Element: %@", elementName); //HERE } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if(!currentElementValue) currentElementValue = [[NSMutableString alloc] initWithString:string]; else { [currentElementValue appendString:string];//[tempString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]]; CFStringTrimWhitespace((CFMutableStringRef)currentElementValue); } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if ([elementName isEqualToString:@"item"]) { [sharedSingleton.master addObject:aMaster]; NSLog(@"Added %@ and %@ to the shared singleton", aMaster.title, aMaster.noType); //Only having one at a time added... don't know why [aMaster release]; aMaster = nil; } else if ([elementName isEqualToString:@"title"]) { [aMaster setValue:currentElementValue forKey:@"title"]; } else if ([elementName isEqualToString:@"noType"]) { [aMaster setValue:currentElementValue forKey:@"noType"]; //NSLog(@"%@ should load into the singleton", aMaster.noType); } NSLog(@"delimiter"); NSLog(@"%@ should load into the singleton", aMaster.title); NSLog(@"%@ should load into the singleton", aMaster.noType); [currentElementValue release]; currentElementValue = nil; } - (void) dealloc { [aMaster release]; [currentElementValue release]; [super dealloc]; } @end

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  • import webkit fails with an ImportError

    - by Stuart K
    When I import webkit on Ubuntu 10.04 I get the following error: Traceback (most recent call last): File "test.py", line 1, in <module> import webkit File "/usr/lib/pymodules/python2.6/webkit/__init__.py", line 19, in <module> import webkit ImportError: /usr/lib/pymodules/python2.6/webkit/webkit.so: undefined symbol: webkit_web_frame_get_global_context I think all the packages I need are installed. Does anyone have an idea of why this is failing?

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  • Change position of navigationItem.title

    - by ludo
    Hi, In my ViewDidLoad I use : self.navigation.title = @"test"; It will display my title in the middle of my UINavigationController, how can I change the position and put this title on the left. Or maybe create a label and put it on the left? Thanks,

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  • How to clip a rectangle from a tiff?

    - by TooFat
    I have a Winforms Gui in C# that allows a user to draw a rectangle on a display of a tiff and save the position, height, width etc. Basically, what I want to do is take the saved position, height and width of the rectangle and clip that area into a sep. bitmap that can then be passed to sep. method that will just OCR the new clip of the bitmap only. What is the best way to do this?

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  • How to generate a unified diff in Ruby?

    - by jstayton
    After reading through this question about Ruby diff packages, I'm still not sure how to generate a unified diff from two text files. I'm not having trouble reading each file into a string (IO.read()), but I'm not finding any package that can generate a unified diff. Does one exist? Is doing a system call to diff even an option I should consider? (I'm thinking no.) Any help is appreciated! Thanks.

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  • Mapping a BigInteger to a circle

    - by Martin
    I have a C# system using 160 bit numbers, stored in a BigInteger. I want to display these things on a circle, which means mapping the 0-2^160 range into the 0-2Pi range. How would I do this? The approach that jumps instantly to mind is angle = (number / pow(2, 160)) * TwoPi; However, that has complexities because the division will truncate the result into an integer.

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