Search Results

Search found 5279 results on 212 pages for 'optional arguments'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 120/212 | < Previous Page | 116 117 118 119 120 121 122 123 124 125 126 127  | Next Page >

  • Prevent query string manipulation by adding a hash?

    - by saille
    To protect a web application from query string manipulation, I was considering adding a query string parameter to every url which stores a SHA1 hash of all the other query string parameters & values, then validating against the hash on every request. Does this method provide strong protection against user manipulation of query string values? Are there any other downsides/side-effects to doing this? I am not particularly concerned about the 'ugly' urls for this private web application. Url's will still be 'bookmarkable' as the hash will always be the same for the same query string arguments. This is an ASP.NET application.

    Read the article

  • how can I implement Comparable more than once?

    - by codeman73
    I'm upgrading some code to Java 5 and am clearly not understanding something with Generics. I have other classes which implement Comparable once, which I've been able to implement. But now I've got a class which, due to inheritance, ends up trying to implement Comparable for 2 types. Here's my situation: I've got the following classes/interfaces: interface Foo extends Comparable<Foo> interface Bar extends Comparable<Bar> abstract class BarDescription implements Bar class FooBar extends BarDescription implements Foo With this, I get the error 'interface Comparable cannot be implemented more than once with different arguments...' Why can't I have a compareTo(Foo foo) implemented in FooBar, and also a compareTo(Bar) implemented in BarDescription? Isn't this simply method overloading?

    Read the article

  • for a single-table inheritance in rails, how do I know the 'type' when creating a record?

    - by Angela
    I have several models which are very similar: Contact_Emails, Contact_Letters, Contact_Calls -- and I think life could be easier making them into a Single Table Inheritance called Contact_Event. However, the way I have it set up now is when something is created for a Contact_Email, I have a dedicated controller that I call and know that I am passing the arguments that are approrpriate. For example, new_contact_email(contact, email). I then have: Emails.find(email.contact_id), etcera, all very specific to that Model. I'm not sure how I extract the class/models to use. For example, I currently have the following because I have separate controllers for each model: def do_event(contact, call_or_email_or_letter) model_name = call_or_email_or_letter.class.name.tableize.singularize link_to( "#{model_name.camelize}", send("new_contact_#{model_name}_path", :contact => contact, :status => 'done', :"#{model_name}" => call_or_email_or_letter ) ) end What I really want is to: link_to("#model_name.camelize}", send("new_contact_event_path(contact,call_or_email_or_letter)"

    Read the article

  • Javascript tail recursion

    - by Misha Moroshko
    Why the following code runs so.... slow....... ? <html><body><script type="text/javascript"> var i = 0; f(); function f() { if (i == 5000) { document.write("Done"); } else { i++; tail(); } } function tail() { var fn = tail.caller; var args = arguments; setTimeout(function() {fn.apply(this, args)}, 0); }; </script></body></html>

    Read the article

  • What database works well with 200+GB of data?

    - by taw
    I've been using mysql (with innodb; on Amazon rds) because it's sort of universal default, but it's been ridiculously under-performing, and tweaking it only delays the inevitable. The data is mostly relatively short (<1kB of bytes each) blobs information about 100Ms of urls. There is (or should be, mysql cannot seem to handle it) very high amount of insert / update / retrieve but few complex queries - not that complex queries wouldn't be useful, but because mysql is so slow that it's far faster to get the data out, process it locally, and cache the results somewhere. I can keep tweaking mysql and throwing more hardware at it, but it seems increasingly futile. So what are the options? SQL/relational model/etc. optional - anything will do as long as it's fast, networked, and language-independent.

    Read the article

  • how to identify an argument as a "Year" in PERL

    - by dexter
    i have created a file argument.pl which takes several arguments first of which should be in form of a year example of argument : 2010 23 type here 2010 is a year my code does something like: use strict; use warning use Date::Calc qw(:all); my ($startyear, $startmonth, $startday) = Today(); my $weekofyear = (Week_of_Year ($startyear,$startmonth,$startday))[0]; my $Year = $startyear; ... ... if ($ARGV[0]) { $Year = $ARGV[0]; } here this code fill $Year with "current year" if if $ARGV[0] is null or doesn't exists now here instead of if ($ARGV[0]) is it possible to check that the value in $ARGV[0] is a valid year (like 2010, 1976,1999 etc.)

    Read the article

  • Effects of the `extern` keyword on C functions

    - by Elazar Leibovich
    In C I did not notice any effect of the extern keyword used before function declaration. At first I thougth that when defining extern int f(); in a single file forces you to implement it outside of the files scope, however I found out that both extern int f(); int f() {return 0;} And extern int f() {return 0;} Compiles just fine, with no warnings from gcc. I used gcc -Wall -ansi, he wouldn't even accept // comments. Are there any effects for using extern before function definitions? Or is it just an optional keyword with no side effects for functions. In the latter case I don't understand why did the standard designers chose to litter the grammar with superfluous keywords. EDIT: to clarify, I know there's usage for extern in variables, but I'm only asking about extern in functions.

    Read the article

  • LinkedIn / Twitter / Facebook as OAuth and OpenId use

    - by monkeylee
    Firstly I understand OpenId is for authentication and OAuth is for authorisation and unlike other questions on the site I am not asking which should be used for which but if anyone can advise a solution for my issue. I want to allow users to login to my site via their LinkedIn/Twitter/Facebook account once logged in say via LinkedIn they could also then authorise their Twitter and Facebook account as a optional login method. This would allow the user to authenticate via any of the three but end up with their user account on my site as the end result. I also want to use the authorisation they have provided to get basic user details (profile pic/name etc) and post status updates. I don't want to ask a user to login with their account via openId then have to authorise the same account again via oauth to allow my site to publish to their service feed and have to do this for each of the 3 services. Any ideas or issues to this issue Lee

    Read the article

  • Haskell Syntax: Parse Error On Input

    - by NuNu
    As part of a mini-haskell compiler that I'm writing, I have a function named app. What I want this function to do is take in these arguments epp (App e1 e2). The first step would be to evaluate e1 recursively (epp e1) and check if the output would be an error. If not then evaluate e2 and then call another function eppVals to evaluate the outputs of the calls on e1 and e2 which I defined as v1 and v2 respectively. epp (App e1 e2) | epp e1 /= Error = eppVals v1 v2 | otherwise = Error where v1 = epp e1 v2 = epp e2 <- parse error on input `=' Logically I believe what I have written so far works but I'm getting a parse error on input = where I stated above. Any idea why? My second try epp :: Exp -> Error Val epp (App e1 e2) = (eppVals v1 v2) where v1 = (epp e1) v2 = (epp e2) But now throws Couldn't match expected type Val with actual type Error Val

    Read the article

  • Is there a bash shortcut for traversing similar directory structures?

    - by Steve Weet
    The Korn shell used to have a very useful option to cd for traversing similar directory structures e.g. given the following directorys /home/sweet/dev/projects/trunk/projecta/app/models /home/andy/dev/projects/trunk/projecta/app/models Then if you were in the /home/sweet.... directory then you could change to the equivalent directory in andy's structure by typing cd sweet andy So if ksh saw 2 arguments then it would scan the current directory path for the first value, replace it with the second and cd there. Is anyone aware of similar functionality in bash. EDIT 1 Following on from Michal's excellent answer I have now created the following bash function called scd (For Sideways cd) function scd { cd "${PWD/$1/$2}" } EDIT 2 Thanks to @digitalross I can now reproduce the ksh functionality exactly with the code from below (With the addition of a pwd to tell you where you have changed to) cd () { if [ "x$2" != x ]; then builtin cd ${PWD/$1/$2} pwd else builtin cd "$@" fi }

    Read the article

  • Mysql adapter for Zend_Translate

    - by Peter
    Hi everybody, I'm currently in the planning phase of a rather large project that I'll develop in the Zend Framework. One of the problems I'm facing is that the customers will want to translate not only the content but also the interface. I'm currently using gettext and poedit to manage my language files but this is not an option for the customer as they, for one, want have FTP access to the site. Hence, I'm thinking of a mysql back end with an interface in the front end for the customer to manage his own translations of the interface. There is however still no mysql adapater for Zend_Translate. So, does anybody now of an adapter script for Zend_Translate so it can work with a mysql table? Or any arguments against using mysql and possible other solutions for this problem?

    Read the article

  • Why connection in Python's DB-API does not have "begin" operation?

    - by newtover
    Working with cursors in mysql-python I used to call "BEGIN;", "COMMIT;", and "ROLLBACK;" explicitly as follows: try: cursor.execute("BEGIN;") # some statements cursor.execute("COMMIT;") except: cursor.execute("ROLLBACK;") then, I found out that the underlying connection object has the corresponding methods: try: cursor.connection.begin() # some statements cursor.connection.commit() except: cursor.connection.rollback() Inspecting the DB-API PEP I found out that it does not mention the begin() method for the connection object, even for the extensions. Mysql-python, by the way, throws the Deprecation Warning, when you use the method. sqlite3.connection, for example, does not have the methd at all. And the question is why there is no such method in the PEP? Is the statement somehow optional, is it enough to invoke commit() instead?

    Read the article

  • Constructing T-SQL WHERE condition at runtime

    - by Nickson
    I would like to implement a search function where a user passes all the arguments to the "WHERE" clause at runtime. For example in query below, SELECT Col1, Col2, Col3, Col4 FROM MyTable WHERE Col2 = John 1.Now what i want is to give the user a dropdownlist of columnns such that the user selects a column to search by at runtime Also instead of precoding Col2 = John, i want the user to choose their own operator at runtime(such as choosing between =, <, <, <, LIKE, IN) i basically want to contruct a query like SELECT Col1, Col2, Col3, Col4 FROM MyTable WHERE (@FieldToSearchBy e.g Col3, @OperatorToUserInSearach e.g LIKE, @ValueToSearch e.g John) I want to pass @FieldToSearchBy, @OperatorToUserInSearach, @ValueToSearch) as user specified parameters at runtime I want to do this with a TableAdpter like in this example http://www.codeproject.com/KB/database/TableAdapter.aspx

    Read the article

  • Is this code well-defined?

    - by Nawaz
    This code is taken from a discussion going on here. someInstance.Fun(++k).Gun(10).Sun(k).Tun(); Is this code well-defined? Is ++k Fun() evaluated before k in Sun()? What if k is user-defined type, not built-in type? And in what ways the above function calls order is different from this: eat(++k);drink(10);sleep(k); As far as I can say, in both situations, there exists a sequence point after each function call. If so, then why can't the first case is also well-defined like the second one? Section 1.9.17 of the C++ ISO standard says this about sequence points and function evaluation: When calling a function (whether or not the function is inline), there is a sequence point after the evaluation of all function arguments (if any) which takes place before execution of any expressions or statements in the function body. There is also a sequence point after the copying of a returned value and before the execution of any expressions outside the function.

    Read the article

  • Good way to make Authentication and Authorization information available between application layers

    - by DutrowLLC
    I have a web application running on Google App Engine (GAE) for JAVA. I'm authenticating the client at the Servlet layer but would like to make the client information available to my business and data layers without having to pass the client object through the arguments of every single function. I'm considering setting up a "session" type object using ThreadLocal. That way any function can just say something like: CurrentUser.getRoles(); Is this a good way to do this or is there something else that is a more accepted solution? Thanks!

    Read the article

  • Python Introspection: How to get varnames of class methods?

    - by daccle
    I want to get the names of the keyword arguments of the methods of a class. I think I understood how to get the names of the methods and how to get the variable names of a specific method, but I don't get how to combine these: class A(object): def A1(self, test1=None): self.test1 = test1 def A2(self, test2=None): self.test2 = test2 def A3(self): pass def A4(self, test4=None, test5=None): self.test4 = test4 self.test5 = test5 a = A() # to get the names of the methods: for methodname in a.__class__.__dict__.keys(): print methodname # to get the variable names of a specific method: for varname in a.A1.__func__.__code__.co_varnames: print varname # I want to have something like this: for function in class: print function.name for varname in function: print varname # desired output: A1 self test1 A2 self test2 A3 self A4 self test4 test5

    Read the article

  • How to set a reference from one object to another?

    - by Tzur Gazit
    Hi, Imagine the obvious model of employees and departments, where each employee must refer to a single department, and each department may have none to many employees. For Employee I have a pointer to Department, and I set its value to the address of the object of the relevant Department. When I try to save the Employee I get an error: 2010-04-07 10:05:22.491 CoreData2[1112:207] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSCFDictionary setObject:forKey:]: attempt to insert nil value (key: Department)' I tried, just for testing, to make the reference from Employee to Department optional, but I get the same result. I'm having my first steps in CoreData so please be as clear and simple as you can. Thanks, Tzur.

    Read the article

  • How to implement dynamic queries for MNesia?

    - by Kerem
    I'm trying to implement a function that generates dynamic queries for MNesia. For example, when function is called with these arguments; dyn_query(list, person, [name, age], ["jack", 21]) I want to query MNesia to list items whose name is "jack" and age is 21 in person table. I've tried to implement this by using qlc:q(ListComprehension) and qlc:string_to_handle("ListComprehension"). First failed because of compile errors, compiler didn't let me to use functions instead of ListComprehentions and variables instead of record names like "Item#Table.Member". Second failed, because erl_eval couldn't handle records and throwed exceptions like {undefined_record, person}. Which method should I use? How could i solve these problems? Or should I use a different method? Thanks.

    Read the article

  • How sophisticated should be DAL?

    - by Andrew Florko
    Basically, DAL (Data Access Layer) should provide simple CRUD (Create/Read/Update/Delete) methods but I always have a temptation to create more sophisticated methods in order to minimize database access roundtrips from Business Logic Layer. What do you think about following extensions to CRUD (most of them are OK I suppose): Read: GetById, GetByName, GetPaged, GetByFilter... e.t.c. methods Create: GetOrCreate methods (model entity is returned from DB or created if not found and returned), Create(lots-of-relations) instead of Create and multiple AssignTo methods calls Update: Merge methods (entities list are updated, created and deleted in one call) Delete: Delete(bool children) - optional children delete, Cleanup methods Where do you usually implement Entity Cache capabilities? DAL or BLL? (My choice is BLL, but I have seen DAL implementations also) Where is the boundary when you decide: this operation is too specific so I should implement it in Business Logic Layer as DAL multiple calls? I often found insufficient BLL operations that were implemented in dozen database roundtrips because developer was afraid to create a bit more sophisticated DAL. Thank you in advance!

    Read the article

  • What is .htaccess RewriteRule best practice?

    - by Pablo
    Is it better to have a single RewriteRule with a bunch of RegEx or multiples Rules with fewer RegEx for the server to query? Will there be any performance differences? Heres is an example a single rule with almost all RegEx groups as optional: RewriteRule ^gallery/?([\w]+)?/?([\w]+)?/?([\d]+)?/?([\w]+)/?$ /gallery.php?$1=$2&start=$3&by=$4 [NC] Here are some of the rules lists that would replace the one above: RewriteRule ^gallery/category/([\w]+)/$ /gallery.php?category=$1& [NC] RewriteRule ^gallery/category/([\w]+)/([\d]+)/$ /gallery.php?category=$1&start=$2 [NC] RewriteRule ^gallery/category/([\w]+)/([\d]+)/([\w]+)/$ /gallery.php?category=$1&start=$2&by=$3 [NC] ... RewriteRule ^gallery/tag/([\w]+)/$ /gallery.php?category=$1& [NC] RewriteRule ^gallery/tag/([\w]+)/([\d]+)/$ /gallery.php?category=$1&start=$2 [NC] RewriteRule ^gallery/tag/([\w]+)/([\d]+)/([\w]+)/$ /gallery.php?category=$1&start=$2&by=$3 [NC] ... I'll be glad to hear your options or personal experiences.

    Read the article

  • Print Several Outlook MailItems

    - by David Souther
    I have a pst that has a bunch of emails I want to print using the Microsoft Document Image Writer so that I have a folder, //lawyers/ediscovery/emails/ that has 00001.tiff 00002.tiff etc. In Word or Excel, I can pass the Workbook or Document a filepath to the PrintOut method, but the Outlook MailItem interop's PrintOut doesn't take any arguments, instead only uses the default printer's attributies. I don't have time to type the Bates number for every email (thousands to tens of thousands). Any help on how to tell Outlook where to print to?

    Read the article

  • Remove first element from $@ in bash

    - by Herms
    I'm writing a bash script that needs to loop over the arguments passed into the script. However, the first argument shouldn't be looped over, and instead needs to be checked before the loop. If I didn't have to remove that first element I could just do: for item in "$@" ; do #process item done I could modify the loop to check if it's in its first iteration and change the behavior, but that seems way too hackish. There's got to be a simple way to extract the first argument out and then loop over the rest, but I wasn't able to find it.

    Read the article

  • How to use ASP.NET Authorization Yet Permit Access to .css Files?

    - by Chaitanya
    <authentication mode="Forms"> <forms loginUrl="Login.aspx"/> </authentication> <authorization> <deny users="?"/> </authorization> I am using forms authentication, and when i place the arguments cited above, the css formatting I have done for the whole document is not being implemented, it's vanishing. what should i be doing so that the CSS remains intact.

    Read the article

  • Facebook redirect after login not working when url is dynamic

    - by dythffvrb
    This is my code: $loginUrl = $facebook->getLoginUrl(array( 'scope' => 'publish_actions', 'redirect_uri' => 'http://mysite.com/', )); It works but if I remove redirect_uri it doesn't work anymore. $loginUrl = $facebook->getLoginUrl(array( 'scope' => 'publish_actions' )); According to Facebook domcumentation redirect_uri is optional. https://developers.facebook.com/docs/reference/php/facebook-getLoginUrl/ Im trying to redirect the users to the same url they were on before logging in. Update: This problem occurs when the url is mysite.com/post23 but when url is mysite.com/staticpage or mysite.com there are no problems Any workarounds? EDIT: It looks like a bug, it doesn't work with certain url in the same site I wil try and report it to Facebook.

    Read the article

  • How do you deal with the conflict between ActiveSupport::JSON and the JSON gem?

    - by Luke Francl
    I am stumped with this problem. ActiveSupport::JSON defines to_json on various core objects and so does the JSON gem. However, the implementation is not the same -- the ActiveSupport version takes arguments and the JSON gem version doesn't. I installed a gem that required the JSON gem and my app broke. The issue is that I'm using to_json in a controller that returns a list of objects, but I want to control which attributes are returned. When code anywhere in my system does require 'json' I get this error message: TypeError: wrong argument type Hash (expected Data) I tried a couple of things that I read online to fix it, but nothing worked. I ended up re-writing the gem to use ActiveSupport::JSON.decode instead of JSON.parse. This works but it's not sustainable...I can't be forking gems every time I want to use a gem that requires the JSON gem. Update: The best solution of this problem is to upgrade to Rails 2.3 or higher, which fixed it.

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 116 117 118 119 120 121 122 123 124 125 126 127  | Next Page >