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• Floating point arithmetics restricted to integers

  - by user396672

  I use doubles for a uniform implementation of some arithmetic calculations. These calculations may be actually applied to integers too, but there are no C++-like templates in Java and I don't want to duplicate the implementation code, so I simply use "double" version for ints. Does JVM spec guarantees the correctness of integer operations such a <=,=, +, -, *, and / (in case of remainder==0) when the operations are emulated as corresponding floating point ops? (Any integer, of course, has reasonable size to be represented in double's mantissa)

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• How do you label output variables in an IDL FOR loop for further processing outside the loop in the same program?

  - by user610769

  I have a FOR loop like this: FOR k = 1,216 DO atom = G[,0::(215+k)] END What I would like to be able to do is to store in memory the array for each atom, say, atom_k and then call these different variables to perform further operations outside the FOR loop. Conceptually, I want to label the "atom" variable with the "k" counter somewhat like this: FOR k = 1,216 DO atom(k) = G[,0::(215+k)] END Of course, this doesn't work because "k" is no longer a label in this case. Does anyone know?

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• Python/Django: log to console under runserver, log to file under Apache

  - by Justin Grant

  How can I send trace messages to the console (like print) when I'm running my Django app under manage.py runserver, but have those messages sent to a log file when I'm running the app under Apache? I reviewed Django logging and although I was impressed with its flexibility and configurability for advanced uses, I'm still stumped with how to handle my simple use-case. My apologies for not being able to find the answer elsewhere-- this is a newbie question I know.

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• How do I declare a constructor for an 'object' class type in Scala? I.e., a one time operation for the singleton.

  - by Zack

  I know that objects are treated pretty much like singletons in scala. However, I have been unable to find an elegant way to specify default behavior on initial instantiation. I can accomplish this by just putting code into the body of the object declaration but this seems overly hacky. Using an apply doesn't really work because it can be called multiple times and doesn't really make sense for this use case. Any ideas on how to do this?

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• if we are providing a seperate "printer friendly page" for each page of site then do we need to use

  - by metal-gear-solid

  if we are providing a seperate "printer friendly page" for each page of site then do we need to use print media css in site? only screen css is enough in this case?

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• When does the @ become usefull?

  - by DaNieL

  As you know, the @ characters before a php istruction suppress every eventual warning, error or notice from being raised. Personally, i dont like this tecnique, becose i prefer to handle those errors, and in a real life, the error must no happen or have to be managed. By the way, i find this tecnique to be applied in many scripts (cms plugins, open-source classes). So, could the @ really be usefull (in this case, an example would be appreciated), or is just for lazy developers?

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• Is it necessary to wrap long lines when sending emails ?

  - by understack

  I'm using Zend_Mail to send emails. Few articles have suggested to wrap long lines in message body. Questions: Is it necessary to use wordwrap(), in case any of line is larger than 70 characters? Where does this '70' figure come from?

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• Do I need to cast the result of strtol to int?

  - by Kristo

  The following code does not give a warning with g++ 4.1.1 and -Wall. int octalStrToInt(const std::string& s) { return strtol(s.c_str(), 0, 8); } I was expecting a warning because strtol returns a long int but my function is only returning a plain int. Might other compilers emit a warning here? Should I cast the return value to int in this case as a good practice?

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• catch output from linux telnet to a python script

  - by sandra

  Hello. My problem is that i want to do something like this in linux console telnet 192.168.255.28 process.py i.e i would like to do some transformation with console telnet output using python script. I'm see Popen in python for this case, but i can't understand how can i get input from telnet if it do not stop all time.. Pleas any ideas.

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• PHP: parse URL for matching directory /somedirectory/ and execute conditional code

  - by Scott B

  This has to be pretty simple, but I'd like to parse the current URL and execute conditional code depending on whether the user is on the /sitemap/ directory. So for example, if the site is example.com, and if the request is example.com/sitemap/. Then I want to execute conditional code in that case. I'm using wordpress so I'm not sure if there is a built-in function that gets this... A pure PHP solution is fine.

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• what is the use of mysql_pconnect

  - by Sachindra

  mysql_pconnect as I read does not close when the mysql_query ceases.. in that case why do we use this command?? does that create any security issue??

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• Operation precedence on postgress

  - by user24691

  I have set new division on postgress pg_operator table because i want tath when is division by zero return 0. i have write this: create operator / ( procedure = zero_division, leftarg = double precision, rightarg = double precision); where zero_division is: CREATE OR REPLACE FUNCTION zero_division(double precision, double precision) RETURNS double precision AS 'select case when $2 = 0 then 0 else $1 / $2::real end;' LANGUAGE sql IMMUTABLE COST 100; when i run value/ 0 i get error of division.

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• looking for tool to convert unescape string to escapted string

  - by user63898

  Hello i just wander where can i find a tool that takes in my case java script string that is unescape and converting it to escaped string so i could use it as string value in c++ for example characters like " i need to convert it to \" i need something smart and not just replace all function .

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• Is there a way to create a WCF DataContract on a third party type?

  - by Michael Hedgpeth

  I am migrating to wcf and trying to figure out how I'm going to declare my Data Contracts properly. Some of the types I have been demoting are from a third party that I am unable to change. Are attributes the only way to explicitly declare data contracts in wcf? I know about the auto data contract functionality in 3.5, but the books I'm readin discourage that. And besides, that way assumes all state is publically available, which is oftentimes not the case.

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• Django "last_login" attribute in auth_user model

  - by jack

  It looks like Django does not update last_login field in auth_user model when a visitor is authenticated by saved session. So in this case, how can I implement a similar feature like the "seen" field on very SO user's profile page.

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• Enumerate over an enum in C++

  - by jameszhao00

  In C++, Is it possible to enumerate over an enum (either runtime or compile time (preferred)) and call functions/generate code for each iteration? Sample use case: enum abc { start a, b, c, end } for each (__enum__member__ in abc) { function_call(__enum__member__); } Plausible duplicates: C++: Iterate through an enum Enum in C++ like Enum in Ada?

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• How do I search a Perl array for a matching string?

  - by Mike

  What is the smartest way of searching through an array of strings for a matching string in Perl? One caveat, I would like the search to be case-insensitive so "aAa" would be in ("aaa","bbb")

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• c++ template and its element type

  - by David

  This is my template matrix class: template<typename T> class Matrix { public: .... Matrix<T> operator / (const T &num); } However, in my Pixel class, I didn't define the Pixel/Pixel operator at all! Why in this case, the compiler still compiles?

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• Start Line with (New... in VB.net

  - by pedro_cesar

  Hello; Why can't I start a line using a parenthesis followed by the keyword new?? For example: (New <custom_obj>).foo(var) In that case is obvious that I'm trying to avoid creating a named instance of the the <custom_obj> because I know that I'll only be using it at that sentence. Note that actually creating a named instance is not a problem for me... I just wanna know the reason why this is not possible.

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• How do you create domain.com/?stringhere without a .php extention

  - by matt

  I want to create a link like the following: http://www.myurl.com/?IDHERE What i want to be able to do is be able to goto the above link, and then pull whats after the ? (in this case IDHERE) and be able to use that information to perform a MySQL lookup and return a page. Can anyone point me into the right direction? please know this is using PHP not ASP

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• Annoyed by the expression "Moving Forward". Why do people use it? [closed]

  - by craig

  What does “Moving Forward” mean to you? “Moving Forward”: A.To acknowledge the past but in essence, encourage a positive, professional environment to do our personal best in relation to issue that was criticized. B.To acknowledge the past and learn from case examples to develop continually updated and open sources of information. Specifically, policies and procedures or best practices. C.To dismiss the past to put behind fears of retribution. D.Combination of above choices E._____< Open Answer

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• keeping track of multiple runs of the same function, part 2

  - by qwertymk

  This is related to this Anyway what I need is actually something slightly different I need some way of doing this: function run(arg) { this.ran = this.ran || false; if (!this.ran) init; /* code */ this.ran = true; } This works fine, I just want to make sure that this code works even when this in case it was called with call() or apply() Check this out for what I'm talking about, All of the calls after the first one should all be true, no matter the context

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• Table Adapter query Builder ASP.NET

  - by kmsony32

  I want to connect my Table adapter with the Oracle, for that I am preparing a sql query with the query builder. The query which is running fine in Oracle but makes syntax error with query builder.It shows unable to parse the query text. I am using case statement and joins within the query.

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• error in c, but not in c++

  - by eswar

  const int t=5; char buf[t+5]; When I compile this gives error in C but not in C++!! Can anybody please explain me the reason? Note: I know the const defaults to internal linkage in 'C++', where as in 'C' it defaults to external linkage. Does it has any relation to the above case??

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• Combine First, Middle Initial, Last name and Suffix in T-SQL (No extra spaces)

  - by Paul

  I'm trying not to reinvent the wheel here...I have these four fields [tbl_Contacts].[FirstName], [tbl_Contacts].[MiddleInitial], [tbl_Contacts].[LastName], [tbl_Contacts].[Suffix] And I want to create a FullName field in a view, but I can't have extra spaces if fields are blank...So I can't do FirstName + ' ' + MiddleInitial + ' ' + LastName + ' ' + Suffix...Because if there is no middle initial or suffix I'd have 2 extra spaces in the field. I think I need a Case statement, but I thought someone would have a handy method for this...Also, the middleinitial and suffix may be null.

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