How this looping works in c#
- by Richa Media and services
Recently, in a book i read this code. Can you define the means of this code and how this code works.
int i = 0;
for (; i != 10; )
{
Console.WriteLine(i);
i++;
}
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Search found 11993 results on 480 pages for 'define syntax'.
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Zend framework on shared hosting
- by Stefano
I have a problem. I'm trying to deploy my zend framework app on a shared hosting. In local, with xampp was everything ok, but on shared hosting I received the following message: Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /application/public/index.php on line 40. The line 40 is: $application-bootstrap()-run();. Any idea?Read the article
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sql server modify error
- by Jaspal
hi, i m not able to modify table in SQL server. i m new to databases. use work go alter table employee modify id varchar(20) error message is- Msg 102, Level 15, State 1, Line 1 Incorrect syntax near 'modify' here is an screenshot thanksRead the article
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epoll_wait: maxevents
- by someguy
int epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout); I'm a little confused about the maxevents parameter. Let's say I want to write a server that can handle up to 10k connections. Would I define maxevents as 10000 then, or should it be be lower for some reason?Read the article
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postgresql INSERT ... RETURNING query keeps failing?
- by KnockKnockWhosThere
The error message is kinda vague... The query below works on one server, but fails on another: INSERT INTO searches (status, uid, datecreated, searchname, options) VALUES (0, 1, NOW(), 'TEST', '16') RETURNING sid; And I get this error: Query failed: ERROR: syntax error at or near "RETURNING" Am I missing something here?Read the article
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JPA map relation entity parentID...
- by Fabio Beoni
Hello, could someone help me to understand how can I define an entity with JPA mapping that has a relation with it self? For example, my entity is CompanyDivision, divisionA contains divisionB, divisionC and divisionB contains divisionB1, divisionB2 divisionA divisionB divisionB1 divisionB2 divisionC Thank you!Read the article
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how to extend wpf combo box to bind data?
- by Shaihan
i need to bind a collection of objects to a combo box which i can use in different forms. so i want create a custom control which binds the collection to the combo box? how t do it by extending combo box? also how can i define the ItemData template?Read the article
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Some questions about line-height.........
- by metal-gear-solid
what is default line-height of browsers like font-size is 16px? for which HTML elements i should define line-height and for which not? What is the reason behind to give line-height to body { } ? Will line-height effect to single line text? If I'm using font in em then should i also use use line-height in em? What is co-relation between line-height and font-size?Read the article
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Rails Controller
- by Steve
Hi...In Rails, is it ok to define logic in a controller with a model. For example, take there is an User Model, which is good design. 1)Leaving the UserModel with the CRUD models and moving all the other User Specific actions to a separate controller or 2)Add the user specific actions to the same UserModels Thanks :)Read the article
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Get Criteria by associationPath
- by niklassaers
Hi guys, Every so often, I get a "org.hibernate.QueryException: duplicate association path: myAssociation". This is because the complex criteria I'm working with can define the same path in many places. I'd love to do something like Criteria association = myCriteria.getAssociation("wax"); if(association == null) association = myCriteria.createCriteria("wax"); Is there any such way that I can check if an association is already in place? Cheers NikRead the article
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c++ class member functions selected by traits
- by Jive Dadson
I am reluctant to say I can't figure this out, but I can't figure this out. I've googled and searched stackoverflow, and come up empty. The abstract, and possibly overly vague form of the question is, how can I use the traits-pattern to instantiate non-virtual member functions? The question came up while modernizing a set of multivariate function optimizers that I wrote more than 10 years ago. The optimizers all operate by selecting a straight-line path through the parameter space away from the current best point (the "update"), then finding a better point on that line (the "line search"), then testing for the "done" condition, and if not done, iterating. There are different methods for doing the update, the line-search, and conceivably for the done test, and other things. Mix and match. Different update formulae require different state-variable data. For example, the LMQN update requires a vector, and the BFGS update requires a matrix. If evaluating gradients is cheap, the line-search should do so. If not, it should use function evaluations only. Some methods require more accurate line-searches than others. Those are just some examples. The original version instatiates several of the combinations by means of virtual functions. Some traits are selected by setting mode bits. Yuck. It would be trivial to define the traits with #define's and the member functions with #ifdef's and macros. But that's so twenty years ago. It bugs me that I cannot figure out a whiz-bang modern way. If there were only one trait that varied, I could use the curiously recurring template pattern. But I see no way to extend that to arbitrary combinations of traits. I tried doing it using boost::enable_if, etc.. The specialized state info was easy. I managed to get the functions done, but only by resorting to non-friend external functions that have the this-pointer as a parameter. I never even figured out how to make the functions friends, much less member functions. Perhaps tag-dispatch is the key. I haven't gotten very deeply into that. Surely it's possible, right? If so, what is best practice?Read the article
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Interface in a dynamic language?
- by Bryan
Interface (or an abstract class with all the methods abstract) is a powerful weapon in a static language. It allows different derived types to be used in a uniformed way. However, in a dynamic language, all objects can be used in a uniformed way as long as they define certain methods. Does interface exist in dynamic languages? It seems unnecessary to me.Read the article
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Which is better a switch statement or if-else if-else statement?
- by TheGNUGuy
I am just wondering if one is better (i.e. more efficient). To me the seem to be the same other than the syntax.Read the article
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untar from run command in fibre
- by Shah.Bhavesh
i want to untar file from source to destination with below statement `def untar(source,destination): run("tar -xf {0} {1}".format(source,destination)) ` i am getting Error C:\Users\test\Desktop\fabric>fab -H user@host-p pass untar:source =/shared/sample.tar,destination=/home/ Traceback (most recent call last): File "C:\Users\shasmukh\AppData\Roaming\Python\Python27\site-packages\fabric\m ain.py", line 630, in main docstring, callables, default = load_fabfile(fabfile) File "C:\Users\shasmukh\AppData\Roaming\Python\Python27\site-packages\fabric\m ain.py", line 163, in load_fabfile imported = importer(os.path.splitext(fabfile)[0]) File "C:\Users\shasmukh\Desktop\fabric\fabfile.py", line 11 def copy(source,destination) ^ SyntaxError: invalid syntaxRead the article
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SQL GUI Programs
- by jake
Are there any programs with a gui which let you create a SQL database, create tables, define the primary and foreign keys and insert data? I am tired of having to use the mysql command line client, very tedious.Read the article
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Method for combining tiled squares defined as points into vectors
- by mars
If I tile squares, and the squares can be defined by their coordinates, how can I simplify shapes made of multiple squares into vectors that define each edge of the entire shape? Pseudo-code or general terms are fine.Read the article
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Difference between Expression<Func<>> and Func<>
- by Sir Psycho
As an example, why do most LINQ operators accept Expression<Func<TSource>> and it's equivalent Func<TSource> What's the benefit/reason for using the generic Expression class instead of straight up lamda syntax?Read the article
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Sticky footer with CSS Layout Template Module?
- by boris callens
I'm currently looking into the JQuery library for CSS Layout Template module Is it possible to define the height of a placeholder with *? Meaning it will push content down if it has to, or fill up any remaining space if the complete content is less then the view port. This would be really nice to make the whole sticky footer thing much easier and robust.Read the article
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SQL Server 2005. Full Text Search. Need Thesaurus working with NEAR/AND/OR keywords
- by user305924
Hi, does anyone know if it's possible to do a thesaurus search together with NEAR or AND/OR keywords. Here is an example of the type of query I want to run: SELECT Title, RANK FROM Item INNER JOIN CONTAINSTABLE(Item, Title, 'FORMSOF(Thesaurus, "red" NEAR "wine")') AS KEY_TBL ON Item.ItemID = KEY_TBL.[KEY] ORDER BY RANK DESC ....But I get the error message: Syntax error near 'NEAR' in the full-text search condition 'FORMSOF(Thesaurus, "red" NEAR "wine")'.Read the article
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Json <-> Java serialization that works with GWT
- by amartynov
I am looking for a simple Json (de)serializer for Java that might work with GWT. I have googled a bit and found some solutions that either require annotate every member or define useless interfaces. Quite a boring. Why don't we have something really simple like class MyBean { ... } new GoodSerializer().makeString(new MyBean()); new GoodSerializer().makeObject("{ ... }", MyBean.class)Read the article
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What is the difference between _url and _path while using the routes in rails
- by sana
When we define routes in routes.rb using the name like map.some_link we can use the link in two ways- some_link_url() some_link_path. What are the differences between the two? Which is more secure to be used?Read the article
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serial port in C
- by user222820
I have written a program in C to send a byte to serial port (com). I have used BIOSCOM to send data but I guess that it doesn't open the port. Please tell how I can open and close a com port in C. My code is here: #define COM1 1; bioscom (1 , 65 , COM1); Please help me...Read the article
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How do you access second parameter of a servlet's web.xml file?
- by chustar
Say in my web.xml file, I define a servlet like so: <url-pattern>/MyURL/*</url-pattern> How do i access anything passed in the * in my servlet? I'm planning to use use this scheme for pretty(-ish) URLs.Read the article
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Stop the user entering ' char
- by Phil
I have a search page where I would like to stop the user entering a ' into textboxes, or replace it with a suitable character. Can anyone help me achieve this in asp.net vb ? For example if a user searches for O'Reilly the search crashes with error: Line 1: Incorrect syntax near 'Reilly'. Unclosed quotation mark before the character string ' '. Thanks!Read the article
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Disable auto-indent certain items in Visual Studio 2005?
- by Jakobud
I don't mind most of the way that VS2005 auto-indents (or auto-formats) my C++ code, but certain items I don't want it to automatically indent. Like #define statements for example. It takes them and shoves them all the way to the left side of the screen, no matter how deep into my scope I type them. That's really really annoying. Is there someway to alter this behavior, besides completely disabling auto-indent/format?Read the article
