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• What's the difference between explicit and implicit assignment in C++

  - by Jake Petroules

  int value = 5; // this type of assignment is called an explicit assignment int value(5); // this type of assignment is called an implicit assignment What is the difference between those, if any, and in what cases do explicit and implicit assignment differ and how?

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• How to handle null return from custom HttpHandler in asp.net?

  - by Campos

  I'm using a custom ashx HttpHandler to retrieve gif images from a database and show it on a website - when the image exists, it works great. However, there are cases when the image will not exist, and I'd like to have the html table holding the image to become invisible so the "image not found" icon is not shown. But since the HttpHandler is not synchronous, all my attempts checking for image size at Page_Load were frustrated. Any ideas on how this can be accomplished?

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• How can I get started with using WF 4.0 in typical web site scenerios?

  - by user193189

  I have developed for SharePoint and in those cases it is clear how workflow can help (You have documents that needs approval and there are built in SharePoint workflows for this) But now I am doing standard ASP.NET web CRUD apps with WCF. I would like to find a way to get WF 4.0 invovled but I am not sure how to do it and never see any examples.... Can anyone give me some basic scenerios that I could use WF for?

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• Are regexes really maintainable?

  - by Rich Bradshaw

  Any code I've seen that uses Regexes tends to use them as a black box: Put in string Magic Regex Get out string This doesn't seem a particularly good idea to use in production code, as even a small change can often result in a completely different regex. Apart from cases where the standard is permanent and unchanging, are regexes the way to do things, or is it better to try different methods?

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• Are weekly reports necessary?

  - by Dbger

  At the times that we didn't use Scrum, we had weekly status meeting and technical discussion; And now after we adopt Scrum, we have daily stand up meeting. But for both cases, weekly reports are always a necessity, although I don't see much value of doing this in our development team. What do you think of weekly report? what benefit that you got from it if your like it?

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• Disable a checkbox in javascript and recognize it as checked on the server side

  - by kuzco

  I have a checkbox which in some cases may be disabled and checked using javascript, i.e: var cbTest = document.getElementById("CheckBoxTest"); cbTest.disabled = true; cbTest.checked = true; However, when sending a postback, CheckBoxTest.Checked is false on the server side. Is it possible to disable the checkbox and still have the server side recognize it as checked?

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• SeFocus causing Run time error

  - by code8230

  I am getting: Run-time error '5': Invalid procedure call or argument this seems to happen when Text(1).SetFocus is called. However, I dont see this run time error for all the cases where I have used SetFocus. Just 2-3 places it is causing this error. Text(1).SelStart = 3 Text(1).SelLength = 1 Text(1).SetFocus I tried: Text(1).Enabled = True Text(1).Visible = True just above .SelStart, but it didn't fix the issue.

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• Delayed instantiation with c# using statment

  - by fearofawhackplanet

  Is there any way to write a using statement without instantiating the IDisposable immediately? For example, if I needed to do something like: using (MyThing thing) { if (_config == null) { thing = new MyThing(); } else { thing = new MyThing(_config); } // do some stuff } // end of 'using' Is there an accepted pattern for cases like this? Or am I back to handling the IDisposable explicitly again?

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• javascript replace i into I

  - by Eric Sim

  I need a javascript to replace i into I. This should apply to cases such as i'm good. So am i. He though i love him. The standard ThisContent = ThisContent.replace("i", "I"); doesn't work because it replaces every i. I also thought of ThisContent = ThisContent.replace(" i ", " I "); but it doesn't work for the first and second case. Any idea?

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• mathing string in python

  - by nani

  Write two functions, called countSubStringMatch and countSubStringMatchRecursive that take two arguments, a key string and a target string. These functions iteratively and recursively count the number of instances of the key in the target string. You should complete definitions forthe remaining problems, we are going to explore other substring matching ideas. These problems can be solved with either an iterative function or a recursive one. You are welcome to use either approach, though you may find iterative approaches more intuitive in these cases of matching linear structures

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• Matlab regex if statement

  - by Dan

  I want to have matlab take user input but accept both cases of a letter. For example I have: function nothing = checkGC(gcfile) if exist(gcfile) reply = input('file exists, would you like to overwrite? [Y/N]: ', 's'); if (reply == [Yy]) display('You have chosen to overwrite!') else $ Do nothing end end The if statement obviously doesn't work, but basically I want to accept a lowercase or uppcase Y. Whats the best way to do this?

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• When does the difference between a string and a number matter in Perl 5?

  - by Chas. Owens

  If a string in Perl 5 passes looks_like_number, it might as well be a number. For instance, my $s = "10" + 5; results in $s being assigned 15. Are there any cases where a string does not behave like it's numeric equivalent would have?

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• Is there any way to identify a unique user in Flash/Actionscript 3?

  - by VGambit

  I'm trying to make a vote/poll application in Flash using Actionscript 3. Is there any way to generate a specific ID that is unique to each user? The only other option I can think of is using the IP address, which is less than ideal in many cases (college campuses, shared Internet access, etc.). It needs to be the same number every time it is run on the same PC, but different for each user.

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• Eclipse: Java Enum auto-completion of switch case

  - by Maroloccio

  Is there a CTRL+space -like way of "auto-constructing" a switch case around a given Java Enum in Eclipse? I'd like a stub with all Enum cases...

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• How to get Django url correctly?

  - by Satoru.Logic

  Hi, all. I have set up a url mapping that goes like this: (r'enroll/$', 'enroll') In my development environment this mapping is used when I visit '/enroll/'. But in the production environment, the Django application is under '/activity/' and '/activity/enroll/' should be used. Please tell me how do I get the correct url in both cases. Thanks in advance.

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• Need Help With Simple Regex

  - by npinti

  I have strings of this type: text (more text) What I would like to do is to have a regular expression that extracts the "more text" segment of the string, so far I have been using this regular expression: "^.*\\((.*)\\)$" Which although it works on many cases, it seems to fail if I have something of the sort: text (more text (even more text)) What I get is: even more text) What I would like to get instead is: more text (even more text) (basically the content of the outermost pair of brackets.) Thanks

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• UnicodeDecodeError when redirecting to file

  - by zedoo

  Hi, I run this snippet twice, in the ubuntu terminal, (encoding set to utf-8) once with ./test.py and then with ./test.py >out.txt: uni = u"\u001A\u0BC3\u1451\U0001D10C" print uni Without redirection it prints garbage. With redirection I get a UnicodeDecodeError. Can someone explain why I get the error only in the second case, or even better give a detailed explanation of what's going on behind the curtain in both cases?

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• Way to partialy match a Ruby string using Regexp

  - by Fabiano PS

  I'm working on 2 cases: assume I have those var: a = "hello" b = "hello-SP" b = "not_hello" 1 - Any partial matches I want to accept any string that has the var a inside, so b and c would match. 2 - Patterned match I want to match a string that has a inside, followed by '-', so b would match, c does not. I am having problem, because I always used the syntax /expression/ to define Regexp, so how dinamicaly define an RegExp on Ruby??

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• Common Template Library

  - by user1257547

  I'm trying to create a view that only houses reusable HTML blocks that can be used by other views. Wanted to know if something like this is possible: In views.home.common.scala.html: @component1 = { some common html } @component2 = { some other stuff } In views.home.sample.scala.html: @(user:User) import home._ @component1 @common.component2 Haven't had any luck thus far and I don't see anything similar in the samples but the idea is covered in the Template common use cases.

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• Simulating a missing gem in Ruby unit tests

  - by ktex

  Is there any way to simulate the absence of a gem for certain unit tests, short of actually uninstalling and then reinstalling the gem during testing? I am writing a command line utility, and want to make sure that my tests cover cases where a user may not have all of the gems that I support. For instance, I am using fsevents — a Leopard-specific package for monitoring filesystem events — that will never be present on other systems, as well as a growl gem that's purely optional.

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• jquery radio button group problem

  - by user198937

  Hi, I have a radio group which is validated for required. It works fine except when in certain cases I need to disabled first radio button leaving user to select one from remaining. Even in this case radios are validated but error message is not displayed. I believe its due to error message's association with first radio. Disabling other radio except first works fine too. Is there way around?

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• Difference of function argument as (const int &) and (int & a) in C++

  - by Narek

  I know that if you write void function_name(int& a), then function will not do local copy of your variable passed as argument. Also have met in literature that you should write void function_name(const int & a) in order to say compiler, that I dont want the variable passed as argument to be copied. So my question: what is the difference with this two cases (except that "const" enshures that the variable passes will not be changed by function!!!)???

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• JOIN in SQL with one-to-many relationship

  - by Kristopher Ives

  I'm making a tool to track calls to house/senate reps, and I have 2 tables of importance here: reps rep_id rep_name # and more info comments rep_id status # enum about result of contact comment I want to query for all reps joining the most recent associated comments and in some cases joining comments of a specific status, but there might not be any comments associated with that rep yet. THANKS!

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• Playing with Strings

  - by HARSHITH

  Given a string and a non-empty word string, return a string made of each char just before and just after every appearance of the word in the string. Ignore cases where there is no char before or after the word, and a char may be included twice if it is between two words. wordEnds("abcXY123XYijk", "XY") ? "c13i" wordEnds("XY123XY", "XY") ? "13" wordEnds("XY1XY", "XY") ? "11"

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• Is there a mean to specify specialization-genralization (inheritance) of actors in UML?

  - by Ivan

  I am just starting to use UML and have came to the following question: Some actors clearly are specialized versions of a natural entity. For example I've got Administrator and User actors which are clearly nothing but different roles of a user, Authorizer and Dispatcher which are services (and are going to be implemented this way). Should I just ignore these facts while modelling actors and use cases or specify it some way? I think I could make good use of such a specification to facilitate code generation.

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