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  • Un-readable files uploaded via PHP FTP functions

    - by Mike
    I just setup a LAMP development server and am still trouble-shooting some things. The server is installed on one computer and I use a Windows laptop to write my code and test the site via the web browser. My file uploading script works in that JPEG image files are successfully uploaded to the server, but when I try to view the images in the web browser, permission is denied. I check the permissions on the file via the server and they are 600. I can fix the issue by chmod 777 theimage.jpg, but this doesn't seem like a good solution at all. Does the solution have something to do with Apache configuration? Or is there something else I should be doing. Thank-you, Mike

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  • Default values on arguments in C functions and function overloading in C

    - by inquam
    Converting a C++ lib to ANSI C and it seems like though ANSI C doesn't support default values for function variables or am I mistaken? What I want is something like int funcName(int foo, bar* = NULL); Also, is function overloading possible in ANSI C? Would need const char* foo_property(foo_t* /* this */, int /* property_number*/); const char* foo_property(foo_t* /* this */, const char* /* key */, int /* iter */); Could of course just name them differently but being used to C++ I kinda used to function overloading.

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  • C# Copying instance variable to local variable in functions of same class

    - by NickLarsen
    I have been looking through some code on an open source project recently and found many occurrences of this kind of code: class SomeClass { private int SomeNumber = 42; public ReturnValue UseSomeNumber(...) { int someNumberCopy = this.SomeNumber; if (someNumberCopy > ...) { // ... do some work with someNumberCopy } else { // ... do something else with someNumberCopy } } } Is there any real benefit to making a copy of the instance variable?

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  • Passing variables to callback functions

    - by mickyjtwin
    I am trying to write a jQuery plugin, that can be applied to a selector. Within this plugin, there are multiple calls to webservices, where callback methods are required. The problem I am having is maintaining the current context item in the each loop of the selector. (function($){ $.fn.myMethod = function(){ return this.each(function(){ var c = $(this); $.api.methodToCall("", CallbackFunction); }); }; function CallbackFunction(data, result){ // do stuff based on c } })(jQuery); Normally, you would provide the callback function straight away, which allows me to access c, however within the callback function, there potentially is another api call, so it would start to get messy. Is there any way to do this?

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  • Why am I having this InstantiationException in Java when accessing final local variables?

    - by Oscar Reyes
    I was playing with some code to make a "closure like" construct ( not working btw ) Everything looked fine but when I tried to access a final local variable in the code, the exception InstantiationException is thrown. If I remove the access to the local variable either by removing it altogether or by making it class attribute instead, no exception happens. The doc says: InstantiationException Thrown when an application tries to create an instance of a class using the newInstance method in class Class, but the specified class object cannot be instantiated. The instantiation can fail for a variety of reasons including but not limited to: - the class object represents an abstract class, an interface, an array class, a primitive type, or void - the class has no nullary constructor What other reason could have caused this problem? Here's the code. comment/uncomment the class attribute / local variable to see the effect (lines:5 and 10 ). import javax.swing.*; import java.awt.event.*; import java.awt.*; class InstantiationExceptionDemo { //static JTextField field = new JTextField();// works if uncommented public static void main( String [] args ) { JFrame frame = new JFrame(); JButton button = new JButton("Click"); final JTextField field = new JTextField();// fails if uncommented button.addActionListener( new _(){{ System.out.println("click " + field.getText()); }}); frame.add( field ); frame.add( button, BorderLayout.SOUTH ); frame.pack();frame.setVisible( true ); } } class _ implements ActionListener { public void actionPerformed( ActionEvent e ){ try { this.getClass().newInstance(); } catch( InstantiationException ie ){ throw new RuntimeException( ie ); } catch( IllegalAccessException ie ){ throw new RuntimeException( ie ); } } } Is this a bug in Java? edit Oh, I forgot, the stacktrace ( when thrown ) is: Caused by: java.lang.InstantiationException: InstantiationExceptionDemo$1 at java.lang.Class.newInstance0(Class.java:340) at java.lang.Class.newInstance(Class.java:308) at _.actionPerformed(InstantiationExceptionDemo.java:25)

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  • Javascript functions Math.round(num) vs num.toFixed(0) and browser inconsistencies

    - by eft
    Edit: To clarify, the problem is how to round a number to the nearest integer. i.e. 0.5 should round to 1 and 2.5 shoud round to 3. Consider the following code: <html><head></head><body style="font-family:courier"> <script> for (var i=0;i<3;i++){ var num = i + 0.50; var output = num + " " + Math.round(num) + " " + num.toFixed(0); var node = document.createTextNode(output); var pElement = document.createElement("p"); pElement.appendChild(node); document.body.appendChild(pElement); } </script> </body></html> In Opera 9.63 I get: 0.5 1 0 1.5 2 2 2.5 3 2 In FF 3.03 I get: 0.5 1 1 1.5 2 2 2.5 3 3 In IE 7 I get: 0.5 1 0 1.5 2 2 2.5 3 3 Note the bolded results. Does this mean that toFixed(0) should be avoided?

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  • Acceessing some aggregate functions in a linq datasource in a GridView

    - by Stephen Pellicer
    I am working on a traditional WebForms project. In the project I am trying out some Linq datasources with plans to eventually migrate to an MVC architecture. I am still very new to Linq. I have a GridView using a Linq datasource. The entities I am showing has a to many relationship and I would like to get the maximum value of a column in the many side of the relationship. I can show properties of the base entity in the gridview: <asp:TemplateField HeaderText="Number" SortExpression="tJobBase.tJob.JobNumber"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("tJobBase.tJob.JobNumber") %>'> </asp:Label> </ItemTemplate> </asp:TemplateField> I can also show the count of the many related property: <asp:TemplateField HeaderText="Number" SortExpression="tJobBase.tJob.tHourlies.Count"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("tJobBase.tJob.tHourlies.Count") %>'> </asp:Label> </ItemTemplate> </asp:TemplateField> Is there a way to get the max value of a column called WeekEnding in the tHourlies collection to show in the GridView?

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  • Dynamic Variables Within Functions

    - by Ryan
    Why does this work: function myfunction($v) { $query = $v['host'] == '1'; return ( $query ); } $output = array_filter($recordset,myfunction); print_r($output); Whereas this script, which tries to accomplish the same thing with variables, does not? $column1 = 'host'; $value1 = 1; $query1 = '$v[\''.$column1.'\'] == '.$value1; function myfunction($v) { $query = $GLOBALS['query1']; return ( $query ); } $output = array_filter($recordset,myfunction); print_r($output); Any help would be great. Thanks!

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  • Aggregate Functions and Group By Problems

    - by David Stein
    If we start with the following simple SQL statement which works. SELECT sor.FPARTNO, sum(sor.FUNETPRICE) FROM sorels sor GROUP BY sor.FPARTNO FPartNo is the part number and the Funetprice is obviously the net price. The user also wants the description and this causes a problem. If I follow up with this: SELECT sor.FPARTNO, sor.fdesc, sum(sor.FUNETPRICE) FROM sorels sor GROUP BY sor.FPARTNO, sor.fdesc If there are multiple variations of the description for that part number, typically very small variations in the text, then I don't actually aggregate on the part number. Make sense? I'm sure this must be simple. How can I return the first fdesc that corresponds to the part number? Any of the description variations would suffice as they are almost entirely identical. Edit: The description is a text field.

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  • PHP: How To call Standard Library Functions

    - by Andi
    Hi, I'm starting with PHP for dynamic web pages. I have some libaries written in ANSI C for getting/setting parameters and other proprietary stuff. I wonder, is there a simple solution to use a wrapper inside PHP to call this funtions? Is there a already existing class/library? What would be the best practice to do this on my own? I don't want do make calls to external applications and use stdin/stdout! Is there a simple example available? I don't want to dig through the Zend documentation for now, I only need a feeling for the complexity. Thanks, kind regards, Andi

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  • call multiple c++ functions in python using threads

    - by wiso
    Suppose I have a C(++) function taking an integer, and it is bound to (C)python with python api, so I can call it from python: import c_module c_module.f(10) now, I want to parallelize it. The problem is: how does the GIL work in this case? Suppose I have a queue of numbers to be processed, and some workers (threading.Thread) working in parallel, each of them calling c_module.f(number) where number is taken from a queue. The difference with the usual case, when GIL lock the interpreter, is that now you don't need the interpreter to evaluate c_module.f because it is compiled. So the question is: in this case the processing is really parallel?

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  • sqlite3 date and interval functions

    - by umuthorax
    Hi, I wonder whether sqlite3 supports interval function. The following statement is accepted by PostgreSQL, however sqlite3 failed to parse it; select ... from orders where ... and o_orderdate < date '1995-03-01' + interval '3' month Error: near line 4: near "'1995-03-01'": syntax error Then, I modified the statement a little bit such as; and o_orderdate < date('1995-03-01') + interval '3' month This time the error was; Error: near line 4: near "'3'": syntax error Unfortunately, same trick did not work for the interval function i.e. and o_orderdate < date('1995-03-01') + interval('3' month) or and o_orderdate < date('1995-03-01') + interval('3') month or even and o_orderdate < date('1995-03-01') + interval(3 month) still gave me the syntax error. Maybe sqlite3 does not support interval function or am I missing something in its usage? Thanks a lot

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  • Save jQuery callback functions in a separate file

    - by Danny Herran
    Probably I missed something, but lets say I have this: $('a.delete').click(function(){ resp=window.confirm("Are you sure you want to delete this?"); if(resp) return true; else return false; } Now, I want to save that callback function into a separate js file, because I will use it in several pages. My logic told me to do this: $('a.del').click(delete_element()); Having my js file like this: function delete_element(){ resp=window.confirm("Are you sure you want to delete this?"); if(resp) return true; else return false; } This doesn't work. Everytime my page loads, it displays the confirm window, even if I haven't clicked the link. It is clear that my logic failed this time. What am I missing?

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  • Combining multiple jQuery functions

    - by Mark
    Is there any way to combine all of this to reduce the amount of js? This is just an example of some of the jquery dialogs I have in my site, there are a few more too. Thanks. //initiate Search refinement dialog here $("#chooseMoreCnt, #chooseMoreCat, #chooseMorePr").dialog({ bgiframe: true, autoOpen: false, width: 500, modal: true, open: function(type, data) { $(this).parent().appendTo(jQuery("form:first")); } }); //trigger country dialog $('a.chooseMoreCnt').click(function() { $('#chooseMoreCnt').dialog('open'); return false; }); //trigger category dialog $('a.chooseMoreCat').click(function() { $('#chooseMoreCat').dialog('open'); return false; }); //trigger price dialog $('a.chooseMorePr').click(function() { $('#chooseMorePr').dialog('open'); return false; });

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  • scope of variables in JavaScript callback functions

    - by Ethan
    I expected the code below to alert "0" and "1", but it alert "2" twice. I don't the reason. Don't know if it is a problem of jQuery. Also, please help me to edit title and tags of this post if they are inaccurate. <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"> $(function() { for (var i=0; i<2; i++) { $.get('http://www.google.com/', function() { alert(i); }); } }); </script> </head> <body> </body> </html>

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  • PHP exec() and system() functions always return false in IIS

    - by Loftx
    Hi there, I'm trying to use the PHP exec() or system() (or any other similar function) to run a batch file, but I can't seem to get these to return anything. The simplest example I've seen is this, which outputs nothing: <?php echo system('dir'); ?> The script is running on a windows XP machine on IIS with PHP installed and I've also tried it on my shared hosting account running windows 2003 server/IIS. Can anyone suggest what I need to do to get this working, or provide any commands I can use for troubleshooting? Cheers, Tom

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  • llvm clang struct creating functions on the fly

    - by anon
    I'm using LLVM-clang on Linux. Suppose in foo.cpp I have: struct Foo { int x, y; }; How can I create a function "magic" such that: typedef (Foo) SomeFunc(Foo a, Foo b); SomeFunc func = magic("struct Foo { int x, y; };"); so that: func(SomeFunc a, SomeFunc b); // returns a.x + b.y; ? Note: So basically, "magic" needs to take a char*, have LLVM parse it to get how C++ lays out the struct, then create a function on the fly that returns a.x + b.y; Thanks!

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  • C# delegate or Func for 'all methods'?

    - by Michel
    Hi, i've read something about Func's and delegates and that they can help you to pass a method as a parameter. Now i have a cachingservice, and it has this declaration: public static void AddToCache<T>(T model, double millisecs, string cacheId) where T : class public static T GetFromCache<T>(string cacheId) where T : class So in a place where i want to cache some data, i check if it exists in the cache (with GetFromCache) and if not, get the data from somewhere, and the add it to the cache (with AddToCache) Now i want to extend the AddToCache method with a parameter, which is the class+method to call to get the data Then the declaration would be like this public static void AddToCache<T>(T model, double millisecs, string cacheId, Func/Delegate methode) where T : class Then this method could check wether the cache has data or not, and if not, get the data itself via the method it got provided. Then in the calling code i could say: AddToCache<Person>(p, 10000, "Person", new PersonService().GetPersonById(1)); AddToCache<Advert>(a, 100000, "Advert", new AdvertService().GetAdverts(3)); What i want to achieve is that the 'if cache is empty get data and add to cache' logic is placed on only one place. I hope this makes sense :) Oh, by the way, the question is: is this possible?

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  • C++: Templates for static functions?

    - by Rosarch
    I have a static Utils class. I want certain methods to be templated, but not the entire class. How do I do this? This fails: #pragma once #include <string> using std::string; class Utils { private: template<class InputIterator, class Predicate> static set<char> findAll_if_rec(InputIterator begin, InputIterator end, Predicate pred, set<char> result); public: static void PrintLine(const string& line, int tabLevel = 0); static string getTabs(int tabLevel); template<class InputIterator, class Predicate> static set<char> Utils::findAll_if(InputIterator begin, InputIterator end, Predicate pred); }; Error: utils.h(10): error C2143: syntax error : missing ';' before '<' utils.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int utils.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int utils.h(10): error C2238: unexpected token(s) preceding ';' utils.h(10): error C2988: unrecognizable template declaration/definition utils.h(10): error C2059: syntax error : '<' What am I doing wrong? What is the correct syntax for this? Incidentally, I'd like to templatize the return value, too. So instead of: template<class InputIterator, class Predicate> static set<char> findAll_if_rec(InputIterator begin, InputIterator end, Predicate pred, set<char> result); I'd have: template<class return_t, class InputIterator, class Predicate> static return_t findAll_if_rec(InputIterator begin, InputIterator end, Predicate pred, set<char> result); How would I specify that: 1) return_t must be a set of some sort 2) InputIterator must be an iterator 3) InputIterator's type must work with return_t's type. Thanks.

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  • Pass Linq Expression to a function

    - by Kushan Hasithe Fernando
    I want to pass a property list of a class to a function. with in the function based on property list I'm going to generate a query. As exactly same functionality in Linq Select method. Here I'm gonna implement this for Ingress Database. As an example, in front end I wanna run a select as this, My Entity Class is like this public class Customer { [System.Data.Linq.Mapping.ColumnAttribute(Name="Id",IsPrimaryKey=true)] public string Id { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Name")] public string Name { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Address")] public string Address { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Email")] public string Email { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Mobile")] public string Mobile { get; set; } } I wanna call a Select function like this, var result = dataAccessService.Select<Customer>(C=>C.Name,C.Address); then,using result I can get the Name and Address properties' values. I think my Select function should looks like this, ( *I think this should done using Linq Expression. But im not sure what are the input parameter and return type. * ) Class DataAccessService { // I'm not sure about this return type and input types, generic types. public TResult Select<TSource,TResult>(Expression<Func<TSource,TResult>> selector) { // Here using the property list, // I can get the ColumnAttribute name value and I can generate a select query. } } This is a attempt to create a functionality like in Linq. But im not an expert in Linq Expressions. There is a project call DbLinq from MIT, but its a big project and still i couldn't grab anything helpful from that. Can someone please help me to start this, or can someone link me some useful resources to read about this.

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  • ajaxSubmit options success & error functions aren't fired

    - by Thommy Tomka
    jQuery 1.7.2 jQuery Validate 1.1.0 jQuery Form 3.18 Wordpress 3.4.2 I am trying to code a contact/ mail form in above environment/ with above jQuery libs. Now I am having a problem with the jQuery Form JS: I have taken the original code from the developers page for ajaxSubmit and only altered the target option to an ID which exists in my HTML source and replaced $ with jQuery in function showRequest. The problem is, that the function namend after success: does not fire. I tried the same with error: and again nothing fired. Only complete: did and the function I placed there alerted the responseText from the receiving script. Does anyone has an idea whats going wrong? Thanks in advance! Thomas jQuery(document).ready(function() { var options = { target: '#mail-status', // target element(s) to be updated with server response beforeSubmit: showRequest, // pre-submit callback success: showResponse, // post-submit callback // other available options: //url: url // override for form's 'action' attribute //type: type // 'get' or 'post', override for form's 'method' attribute //dataType: null // 'xml', 'script', or 'json' (expected server response type) //clearForm: true // clear all form fields after successful submit //resetForm: true // reset the form after successful submit // $.ajax options can be used here too, for example: //timeout: 3000 }; jQuery("#mailform").validate( { submitHandler: function(form) { jQuery(form).ajaxSubmit(options); }, errorPlacement: function(error, element) { }, rules: { author: { minlength: 2, required: true }, email: { required: true, email: true }, comment: { minlength: 2, required: true } }, highlight: function(element) { jQuery(element).addClass("e"); jQuery(element.form).find("label[for=" + element.id + "]").addClass("e"); }, unhighlight: function(element) { jQuery(element).removeClass("e"); jQuery(element.form).find("label[for=" + element.id + "]").removeClass("e"); } }); }); // pre-submit callback function showRequest(formData, jqForm, options) { // formData is an array; here we use $.param to convert it to a string to display it // but the form plugin does this for you automatically when it submits the data var queryString = jQuery.param(formData); // jqForm is a jQuery object encapsulating the form element. To access the // DOM element for the form do this: // var formElement = jqForm[0]; alert('About to submit: \n\n' + queryString); // here we could return false to prevent the form from being submitted; // returning anything other than false will allow the form submit to continue return true; } // post-submit callback function showResponse(responseText, statusText, xhr, $form) { // for normal html responses, the first argument to the success callback // is the XMLHttpRequest object's responseText property // if the ajaxSubmit method was passed an Options Object with the dataType // property set to 'xml' then the first argument to the success callback // is the XMLHttpRequest object's responseXML property // if the ajaxSubmit method was passed an Options Object with the dataType // property set to 'json' then the first argument to the success callback // is the json data object returned by the server alert('status: ' + statusText + '\n\nresponseText: \n' + responseText + '\n\nThe output div should have already been updated with the responseText.'); }

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  • Why is one Func valid and the other (almost identical) not.

    - by runrunraygun
    private static Dictionary<Type, Func<string, object>> _parseActions = new Dictionary<Type, Func<string, object>> { { typeof(bool), value => {Convert.ToBoolean(value) ;}} }; The above gives an error Error 14 Not all code paths return a value in lambda expression of type 'System.Func<string,object>' However this below is ok. private static Dictionary<Type, Func<string, object>> _parseActions = new Dictionary<Type, Func<string, object>> { { typeof(bool), value => Convert.ToBoolean(value) } }; I don't understand the difference between the two. I thought the extra braces in example1 are to allow us to use multiple lines in the anon function so why have they affected the meaning of the code?

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  • how to Invoke User-Defined Functions That Return a Table Data Type

    - by nectar
    here my code- create function dbo.emptable() returns Table as return (select id, name, salary from employee) go select dbo.emptable() error: Msg 4121, Level 16, State 1, Line 1 Cannot find either column "dbo" or the user-defined function or aggregate "dbo.emptable", or the name is ambiguous. while when I run sp_helptext emptable it shows- create function dbo.emptable() returns Table as return (select id, name, salary from employee) it means function exists in database then why it is giving such error?

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