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  • MEF - Modify execution if one plugin fails

    - by alexn
    Hi! I'm using MEF for a plugin-system to my application. The flow goes like this: Run all Pre-plugins Run all Core-plugins Run all Post-plugins For example, if a plugin in the Core execution fails, i don't want to run certain post plugins. What would be the best way to achieve this? Hope my question is clear, otherwise please tell me and i'll try to elaborate.

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  • Generic linked list in c++

    - by itsaboy
    I have been struggling for too long a time now with a rather simple question about how to create a generic linked list in c++. The list should be able contain several types of structs, but each list will only contain one type of struct. The problem arises when I want to implement the getNode() function [see below], because then I have to specify which of the structs it should return. I have tried to substitute the structs with classes, where the getNode function returns a base class that is inherited by all the other classes, but it still does not do the trick, since the compiler does not allow the getNode function to return anything but the base class then. So here is some code snippet: typedef struct struct1 { int param1; (...) } struct1; typedef struct struct2 { double param1; (...) } struct2; typedef struct node { struct1 data; node* link; } node; class LinkedList { public: node *first; int nbrOfNodes; LinkedList(); void addNode(struct1); struct1 getNode(); bool isEmpty(); }; LinkedList::LinkedList() { first = NULL; nbrOfNodes = 0; } void LinkedList::addNode(struct1 newData) { if (nbrOfNodes == 0) { first = new node; first->data = newData; } else { node *it = first; for (int i = 0; i < nbrOfNodes; i++) { it = it->link; } node *newNode = new node; newNode->data = newData; it->link = newNode; } nbrOfNodes++; } bool LinkedList::isEmpty() { return !nbrOfNodes; } struct1 LinkedList::getNode() { param1 returnData = first->data; node* deleteNode = first; nbrOfNodes--; if (nbrOfNodes) first = deleteNode->link; delete deleteNode; return returnData; } So the question, put in one sentence, is as follows: How do I adjust the above linked list class so that it can also be used for struct2, without having to create a new almost identical list class for struct2 objects? As I said above, each instance of LinkedList will only deal with either struct1 or struct2. Grateful for hints or help

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  • Running perl script?

    - by Jeff
    I know this is a real basic and stupid question but how do I run a perl script on OSX? I honestly can't find the answer anywhere! Presumably I have to run a command in Terminal but what? Thanks in advance, Jeff

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  • Membership levels PHP

    - by Ben
    I want to make someone able to register on my site (or upgrade their current account) with one of 3 membership levels. When someone selects the membership level (or upgrades their current account) and registers, they will register under that membership level and payment will be started from there. My real question being how do I make someone able to sign up (or upgrade) an account upon registration (for new accounts) and upgrade for existing accounts and have this happen automatically so I dont have to do them all by hand? Thanks! Benjamin

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  • display unsigned zerofill autoincrement value without leading zero

    - by I Like PHP
    my primay key is user_id which is auto incremant UNSIGNED ZERO FILL, i want to display user_id on a page without leading Zero( means 1 instead of 0000000001 ).. how can we do that in php or in mysql one more question... if i delete last record( let user_id=21) wwhich have highest id of that table then can we adjust auto increment value to 21 instead of 22 of that table.

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  • Python File Search Line And Return Specific Number of Lines after Match

    - by Simos Anderson
    I have a text file that has lines representing some data sets. The file itself is fairly long but it contains certain sections of the following format: Series_Name INFO Number of teams : n1 | Team | # | wins | | TeamName1 | x | y | . . . | TeamNamen1 | numn | numn | Some Irrelevant lines Series_Name2 INFO Number of teams : n1 | Team | # | wins | | TeamName1 | num1 | num2 | . where each section has a header that begins with the Series_Name. Each Series_Name is different. The line with the header also includes the number of teams in that series, n1. Following the header line is a set of lines that represents a table of data. For each series there are n1+1 rows in the table, where each row shows an individual team name and associated stats. I have been trying to implement a function that will allow the user to search for a Team name and then print out the line in the table associated with that team. However, certain team names show up under multiple series. To resolve this, I am currently trying to write my code so that the user can search for the header line with series name first and then print out just the following n1+1 lines that represent the data associated with the series. Here's what I have come up with so far: import re print fname = raw_input("Enter filename: ") seriesname = raw_input("Enter series: ") def findcounter(fname, seriesname): logfile = open(fname, "r") pat = 'INFO Number of teams :' for line in logfile: if seriesname in line: if pat in line: s=line pattern = re.compile(r"""(?P<name>.*?) #starting name \s*INFO #whitespace and success \s*Number\s*of\s*teams #whitespace and strings \s*\:\s*(?P<n1>.*)""",re.VERBOSE) match = pattern.match(s) name = match.group("name") n1 = int(match.group("n1")) print name + " has " + str(n1) + " teams" lcount = 0 for line in logfile: if line.startswith(name): if pat in line: while lcount <= n1: s.append(line) lcount += 1 return result The first part of my code works; it matches the header line that the person searches for, parses the line, and then prints out how many teams are in that series. Since the header line basically tells me how many lines are in the table, I thought that I could use that information to construct a loop that would continue printing each line until a set counter reached n1. But I've tried running it, and I realize that the way I've set it up so far isn't correct. So here's my question: How do you return a number of lines after a matched line when given the number of desired lines that follow the match? I'm new to programming, and I apologize if this question seems silly. I have been working on this quite diligently with no luck and would appreciate any help.

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  • Terminology for mobile computing with a tablet?

    - by Idrise_Coulombe
    This is more of a terminology question... I'm developing an occasionally connected application that will run on a tablet for clinicians or field service workers but I'm struggling with what this type of computing is referred to. Mobile computing as connotations of a phone app. Whereas our clients may be occasionally at their desk. Microsoft uses Smart Client a lot, but I'm not sure if that best describes this scenario or is the common term for this kind of computing.

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  • Why Constant Keyword is not introduced In Java?

    - by harigm
    I am curious learner of Java, I was thinking on one topic "CONSTANTS" I have learnt that Java allows us to declare constants by using "Final" keyword. My question is Java didnot introduce Constant(Const) Keyword. Since many people say it has come from C++, in C++ we have Const keyword Is there any strong reason behind, Please share your thoughts on this.

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  • Synthesized property of a protocol not seeing superclass' ivar

    - by hyn
    I have a situation where my subclass is not seeing the superclass' instance variable x. The ivar is obviously @protected by default, so why do I get a compiler error "x undeclared"? - (CGSize)hitSize { // Compiler error return size; } EDIT: hitSize is a property of a protocol my subclass is conforming to. The problem was that I had hitSize @synthesized, which was the culprit. The question then is why can't the synthesized getter see the ivar?

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  • Where can I find the list of all SQL-standard-mandated aggregate functions? [on hold]

    - by einpoklum
    I know that different DBMSes support different aggregate functions; for example: MySQL's aggregates Oracle's aggregates I want to get the list of aggregates mandated by the SQL standard. Or, to be more precise, the lists of mandatory aggregates for SQL 1992, 1998, 2003, 2008 and 2011 - with 2011 being the most important to me. Edit: Of course if I buy a copy of the standards I could compile these lists myself. My question is whether they're accessible somewhere online.

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  • Is there a way to iterate over all open windows in Mac OS X?

    - by Alex
    When you unplug an external monitor with a higher resolution that your macbook from your laptop, the windows mostly retain their width, but their size gets clipped to the (smaller) height of the macbook screen. When you plug the monitor back in, their size remains frustratingly small. My question is: is there any way that I can iterate over all open windows, save their size, and restore them once the monitor gets plugged in again?

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  • how to maintain checkbox status in pagination in php

    - by abdullah
    i ve used pagination. what the problem is for example: i ve 3 pages 1) in the first i'm clicking some checkboxes and 2) i move on to the second and 3) return back to the 1st page the checkbox that i already checked is unchecked. for form submission i need the checkbox status that i ve checked on all pages should be submit. i need a detail description and clear answer for my question. Is anybody there to help me pls.....

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  • Asp.net mvc small amount data storage

    - by Trimack
    Hi there, I am writing some learning tests (i.e. what's the answer for...; choose correct options...). Now my question is, how should I store them. SQL db seems quite an overkill, but I really don't know what would be the best choice if I wanted to select random subset of questions etc. Perhaps some simple xml files? Thanks for advice.

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  • MutiHomed computers and rmi?

    - by ipkiss
    Hello, I am writing a program using rmi to connect server and clients together and got the following issue: My rmi server support both ethernet and wifi mode rmi clients can connect to the server either vi ethernet or wifi depending. That because s*ome clients can only run via ethernet* and some can only run via wifi. My question is: how can I make my rmi server connect to all clients in such situation? Thanks.

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  • is <p> a block-level or inline-level element?

    - by Andor
    hi there, i got a question when i come across the HTML 4.01 DTD: in the strict DTD, a element is defined as <!ELEMENT P - O (%inline;)* -- paragraph --> but somewhat i thought is a block-level, and all(maybe almost) user agents define as a block-level. so, i just wondering, is a block-level or inline-level element. thx.

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  • Undo "git add"?

    - by ceretullis
    Git newbie here, quick question. I mistakenly added files using the command "git add file". I have not yet run "git commit". Is there a way to remove these files from the commit?

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  • How to convert binary, OCT, HEX to calculate in Java?

    - by user316751
    Write an application that inputs one number consisting of FIVE digits from the user, separates the number into its individual digits and prints the digits separated from one another by three spaces each. For example, if the user types in the number 12345, the program should print 1 2 3 4 5 The following screen dump of result is for your reference. Input a digit: 12345 Digits in 12345 = 1 2 3 4 5 How to convert binary, OCT, HEX to calculate the question?

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  • difference between thread.start() and executor.submit(thread)

    - by Mrityunjay
    hi, i am facing a problem regarding the thread. I am having a class which implements runnable, and i can use thread.start() method on that class. My question is i have one more class java.util.concurrent.ExecutorService in which i can call executor.submit(thread).. can anyone please tell me what is the difference between thread.start() and executor.submit(thread)...

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