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• When are type annotations in Clojure desirable?

  - by Michiel Borkent

  When are type annotations in Clojure desirable? Are there rules by which you can live of when and where to add them?

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• Why should I use PropertyProxyValidator? ASP.NET

  - by user102533

  I understand thatthe PropertyProxyValidator integrates with the ASP.NET UI. But, it cannot do client side validation. How would it be any different from throwing in a label in the UI and populating the errors on the server side? Also, If I am using Validation Application Block, what approaches do you suggest for client side validation if I don't want to duplicate rules on server and client side?

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• What is the performance difference between blocks and callbacks?

  - by Don

  One of the things that block objects, introduced in Snow Leopard, are good for is situations that would previously have been handled with callbacks. The syntax is much cleaner for passing context around. However, I haven't seen any information on the performance implications of using blocks in this manner. What, if any, performance pitfalls should I look out for when using blocks, particularly as a replacement for a C-style callback?

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• named/bind zone file parser in C#

  - by Michal Rogozinski

  Hi, I'm looking for a bind/named zone file parser in .NET C#. If there is anything I could import/convert I would be interested too. Unfortunately there's not much, or I'm having troubles finding it. My goal is to make sure a zone file is syntax-errors-free before I push it to the server. I'd appreciate any help or hints. Thanks

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• Questions on using enums as parameters and if/else conditions

  - by dotnetdev

  Hi, Is it possible to do the following with an enum in C#?: Pass in to a method a selected value of the enum (eg if an enum has members such as Red, Green, Orange, I can pass in Colors.Red). In the method body of the above method which accepts an enum, I can say if (Enum == Colors.Red). What would be the syntax for this? I've always seemed to have stalled on this.

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• Iframe: help with background

  - by Joe

  Hello all, On my website I have a page with a standard background. I want this page to load in an iframe without the background from the original page in another section of my site. Is this possible? What is the syntax for this if it is possible. Thanks in advance for the help

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• I am faceing problem with this error of struts application.

  - by Sanjeev

  I am using My-eclipse and doing a struts project there is no syntax error but on starting tomcat server the following error appear in console. java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory and javax.servlet.UnavailableException: Parsing error processing resource path jndi:/localhost/strutspro/WEB-INF/struts-config.xml any idea whats the problem.

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• Do really need a count lock on Multi threads with one CPU core?

  - by MrROY

  If i have some code looks like this(Please ignore the syntax, i want to understand it without a specified language): count = 0 def countDown(): count += 1 if __name__ == '__main__': thread1(countDown) thread2(countDown) thread3(countDown) Here i have a CPU with only one core, do i really need a lock to the variable count in case of it could be over-written by other threads. I don't know, but if the language cares a lot, please explain it under Java?C and Python, So many thanks.

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• How Do I grep For non-ASCII Characters in UNIX

  - by Peter Conrey

  I have several very large XML files and I'm trying to find the lines that contain non-ASCII characters. I've tried the following: grep -e "[\x{00FF}-\x{FFFF}]" file.xml But this returns every line in the file, regardless of whether the line contains a character in the range specified. Do I have the syntax wrong or am I doing something else wrong? I've also tried: egrep "[\x{00FF}-\x{FFFF}]" file.xml (with both single and double quotes surrounding the pattern).

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• Accidentally created VB.NET project instead of C#

  - by Bryan M.

  This should seem simple enough, but can't figure it out. I was porting a project out of MonoDevelop and into VS2008, but I accidently created the project as VB.NET instead of C#. Now ReSharper and any syntax highlighting is throwing a fit because it's trying to validate it as VB. How do I tell it to treat it as a C# project without creating a whole new one?

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• how do you pass in a collection to an MVC 2 partial view?

  - by femi

  hello , how do you pass in a collection to an MVC 2 partial view? I saw an example where they used the syntax; <% Html.RenderPartial("QuestionPartial", question); % this passes in only ONE question object.. what if i want to pass in several questions into the partial view and , say, i want to list them out...how would i pass in SEVERAL questions? thanks

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• How to access child element out of children()?

  - by user291701

  Hi, I'd like to get the # of immediate children an element has, and then get the class of a child at a particular index. Something like: var index = 25; var children = $("#myListElement").children(); if (index < children.length) { if (children[index].hasClass("testClass")) { alert("hi!"); } } I think the syntax for .children() is ok, but how do I get the indexed element out of them in jquery style? Thanks

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• Algorithms behind FarmVille Game

  - by Vadi

  What are all the algorithms involved in Farmville game, specifically I am interested in drawing trees that has fruits based on user's activities. I am into a project which has a specific need to draw a tree-type image in SVG. I am not sure how to go about the algorithms to define the tree and based on certain business rules the leafs in the tree grows etc., I think you get the idea. Farmville is just an example I took to explain. Any help is greatly appreciated..

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• How to paste special in Excel using Applescript?

  - by Ed Taylor

  I am using Applescript to create a macro where data is transferred from several files to a single file. Data is copied with copy range the_range destination clipboard and pasted with paste worksheet active sheet destination range "A1" The problem is that most of the formatting is lost and I have not managed to get the "paste special"-syntax correct. I have downloaded "Excel2004AppleScriptRef.pdf".

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• PHP 6 not backward compatible

  - by netrox

  From what I read, PHP 6 will break a lot of php scripts. I understand the reasons why it may break but why don't they just keep the PHP 5 and simply call PHP 6 as a different language based on PHP syntax? Like for example, why not just call php 6 scripts with an extension, "p6"- why are they trying so hard to make it backward compatible for old scripts when the extension can be used to call a specific interpreter?

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• Where can I find good ajax support in Java/Python ?

  - by HJ-INCPP

  Hello, I want a framework (or anything) that helps me make rich client guis. I know my server-side, but I don't like programming in ajax, javascript, css etc. Something that wraps the ajax code in some objects/methods with clean syntax, would do the trick. I want to write code in java instead of defining css and html tags. Does Java Spring, JSF, Django support this ? Languages: Java, Python Thank you

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• How to do INSERT into a table records extracted from another table

  - by Martin

  I'm trying to write a query that extracts and transforms data from a table and then insert those data into another table. Yes, this is a data warehousing query and I'm doing it in MS Access. So basically I want some query like this: INSERT INTO Table2(LongIntColumn2, CurrencyColumn2) VALUES (SELECT LongIntColumn1, Avg(CurrencyColumn) as CurrencyColumn1 FROM Table1 GROUP BY LongIntColumn1); I tried but get a syntax error message. What would you do if you want to do this?

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• [NUnit+Moq] Guidelines for using Assert versus Verify

  - by emddudley

  I'm new to unit testing, and I'm learning how to use NUnit and Moq. NUnit provides Assert syntax for testing conditions in my unit tests, while Moq provides some Verify functions. To some extent these seem to provide the same functionality. How do I know when it's more appropriate to use Assert or Verify? Maybe Assert is better for confirming state, and Verify is better for confirming behavior (Classical versus Mockist)?

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• How to iterate over an dictionary without knowing the keys, while getting key and object?

  - by dontWatchMyProfile

  I have an NSDictionary and want to iterate over the objects. But at the same time, I need to know the key of the dictionary. I remember there was a special, fancy form of fast enumeration, but have forgotten the exact syntax. Anyone?

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• Are incremental Macro definition possible?

  - by Davorak

  I often find the following type of incremental definition useful: (define (foo) (display "bar")) (foo) ;prints bar (define foo (let ((bar foo)) (lambda () (display "foo") (bar)))) (foo) ;prints foobar How do I preform this type of incremental definition with macros? I could not get let-syntax to provide the same functionality. Currently I use plt scheme, but would like to see answers in different lisp implementations as well.

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• how to declare variable in PostgreSQL

  - by user307880

  I try to declare a variable in a code like this, but it's doesn't work. Can you tell me what's the problem? ERROR: syntax error at or near "VARCHAR" LINE 2: p_country VARCHAR; DECLARE p_country VARCHAR; p_country : = ''; SELECT p_country;

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• String to Integer with JDBC /ODBC sql .

  - by user303730

  I am facing severe problem with JDBC ,converting string to integer. String query = "Select F2, F3, F4 from myTable ORDER BY {fn CONVERT(INT,F4)}" ; error: Syntax error in ORDER By clause;

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• FileZilla is saying there is an error in the W3.org link!

  - by Anonymous the Great

  I just got my free web hosting set up (trigoblocks.comuf.com), I connected via FileZilla FTP and uploaded my files. The error I get is "Parse error: syntax error, unexpected T_STRING in /home/a3639879/public_html/header.php on line 1". Header.php line 1-2: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> I do not get this error while on localhost with XAMPP.

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• Rewrite url for missing resource

  - by Anthony Faull

  For each web request (file or directory) that doesn't start with /en-US/, I want to serve up the original resource if it exists, otherwise serve up the /en-US/ version. How would I do this using rewrite rules in a .htaccess file?

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• Operator overloading - is it really reasonable to forbid?

  - by Gabriel Šcerbák

  Java forbids operator overloading, but coming from C++ I do not see any reason for that. In languages where operator symbols are symbols as any other, same rules apply to "+" as to"plus" and there is no problem. So what is the point?

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