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  • Best way to secure a file.

    - by JACK IN THE CRACK
    Basically I need to like IDK encrypt a .zip file with some images and documents etc. Like it doesn't need to be .zip tho, just how can I encrypt a bunch of files with like a password or something. I NEED tHE ULTIMATE UNCRACKED PROTECTION. Now I'm a hacker, I know that anything can be hacked given enough time and effort. But I'm looking for top of the line....

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  • perror() give seg. fault

    - by Jack
    After an error occurs, I call perror(), naturally. But I'm getting a segmentation fault when I do this or printf("error: %s\n", strerror(errno)); I have no idea what is happing. int fd; if((fd = open(FILENAME, O_RDONLY)) == -1) { perror("fbi"); exit(1); } for(;;) { readed = read(fd, buffer, BUFSIZE); if(readed == 0) break; if(readed == -1) { perror("fbi"); // <- here's the error exit(1); } How to fix this?

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  • What scripts should not be ported from bash to python?

    - by Jack
    I decided to rewrite all our Bash scripts in Python (there are not so many of them) as my first Python project. The reason for it is that although being quite fluent in Bash I feel it's somewhat archaic language and since our system is in the first stages of its developments I think switching to Python now will be the right thing to do. Are there scripts that should always be written in Bash? For example, we have an init.d daemon script - is it OK to use Python for it? We run CentOS. Thanks.

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  • Update all but one result?

    - by Jack M.
    I'm trying to update a table to remove all but the first instance of a group. Basically, I have a table with vehicle data related to an insurance policy. Each policy should only have one power_unit. Everything else should be a towed unit. Unfortunately, a bug has been duplicating power units, and now I need to clean this up. There are ~10k records in the database, and ~4k of them have doubled up power units. The important bits of my table (call it test1 for now) are: +------------+---------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +------------+---------+------+-----+---------+----------------+ | id | int(10) | NO | PRI | NULL | auto_increment | | policy_id | int(10) | NO | | NULL | | | power_unit | int(1) | NO | | 0 | | +------------+---------+------+-----+---------+----------------+ And some sample data: +----+-----------+------------+ | id | policy_id | power_unit | +----+-----------+------------+ | 1 | 1 | 1 | | 2 | 1 | 1 | | 3 | 1 | 1 | | 4 | 2 | 1 | | 5 | 2 | 1 | | 6 | 2 | 1 | | 7 | 4 | 1 | | 8 | 4 | 1 | | 9 | 4 | 1 | | 10 | 5 | 1 | | 11 | 5 | 1 | | 12 | 6 | 1 | +----+-----------+------------+ Basically I'd like to end up where policy_id 1 has only one power_unit=1. Same for policy_id 2, 3, 4, etc. For policy_id 6, nothing should change (there is only one entry, and it is a power_unit already). I don't know if this is possible, but it was an intriguing problem for me, so I thought you guys might find it the same.

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  • How do virtual destructors work?

    - by Jack
    I am using gcc. I am aware how the virtual destructors solve the problem when we destroy a derived class object pointed by a base class pointer. I want to know how do they work? class A { public: A(){cout<<"A constructor"<<endl;} ~A(){cout<<"A destructor"<<endl;} }; class B:public A { public: B(){cout<<"B constructor"<<endl;} ~B(){cout<<"B destructor"<<endl;} }; int main() { A * a = new B(); delete a; getch(); return 0; } When I change A's destructor to a virtual function, the problem is solved. What is the inner working for this. Why do I make A's destructor virtual.

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  • How do i change everything behind a certain point in a Jagged array?

    - by Jack Null
    Say I have a jagged array, and position 2,3 is taken by int 3. Every other spot is filled with int 0. How would I fill all the positions behind 2,3 with a 4? 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 to this: 4 4 4 4 4 4 4 4 4 4 4 4 4 3 0 0 0 0 0 0 0 Ive tried variations of this: int a = 2; int b = 3; for (int x = 0; x < a; x++) { for (int y = 0; y < board.space[b].Length; y++) { board.space[x][y] = 4; } }

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  • How to get the set events of a control?

    - by Jack
    It's possible via C# code get an list of methods/delegates that was set to Control? let me explain better.. For example. Assuming some definitions like this: foo.Click += (a, b) => { ... } //.. foo.Click += (A,B) => { ... } And a megic method: var baa = foo.GetEvents("Click"); Returns baa[0] points to (a, b) => { ... } baa[1] points to (A,B) => { ... } My scenery: I make and add dynamically event to some controls inside a loop. I want depending to a boolean value a event of control of index one,will removed by using control.Click -= baa[1] or something like this. I hope this is clear for your. Thanks in advance.

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  • PHP: Need help with simple XML.

    - by Jack
    I am beginner in PHP. I am trying to parse this xml file. <relationship> <target> <following type="boolean">true</following> <followed_by type="boolean">true</followed_by> <screen_name>xxxx</screen_name> <id type="integer">xxxx</id> </target> </relationship> I need to get the value of the field 'following type="boolean" ' and here's my code - $xml = simplexml_load_string($response); foreach($xml->children() as $child) { if ($child->getName() == 'target') { foreach($child->children() as $child_1) if ( $child_1->getName() == 'following') { $is_my_friend = (bool)$child_1; break; } break; } } but I am not getting the correct output. I think the ' type="boolean" ' part of the field is creating problems. I know this might be a very trivial problem. Kindly bear with my ignorance. Please help.

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  • why winform using external dll(VC) and ocx(VC) control can only import one?

    - by jack
    we have a .net framework application with a vc dll and a vc ocx, and now if we only import one dll ,it is ok, but when we import both, it will pop a messagebox saying: Debug Assertion Failed! and i studied the child module of our application that import the vc dll, i found after the framework import vc ocx and initialize , then the function LoadLibrary in our module importing the vc dll would return 0, that means memory limited or call improperly, i use getlasterror() the error code is 1114. so it is very frustrated ,hope someone can help me.

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  • safely reading directory contents

    - by Jack
    Is it safe to read directory entries via readdir() or scandir() while files are being created/deleted in this directory? Should I prefer one over the other? When I say "safe" I mean entries returned by these functions are valid and can be operated without crushing the program. Thanks.

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  • C# Why does calling an interface member from a class generate an error?

    - by Jack
    So I have an interface: interface IFoo { int Bar(); int this[int i] {get; set;} } And a class that derives from it class Foo : IFoo { public int IFoo.Bar() { //Implementation { public int IFoo.this[int i] { //Implementation } } Now, I try to do this: var fooey = new Foo(); int i = Fooey.Bar(); or this: int i = Fooey[4]; I would expect these to work properly. However, the compiler generates an error as if such members don't exist. Why is that? I am aware I can cast Foo as IFoo, but I am also aware that casting is costly to performance, which is often the reason to use interfaces in the first place. EDIT 1: These are the errors generated 'Foo' does not contain a definition for 'Bar' and no extension method 'Bar' accepting a first argument of type 'Foo' could be found (are you missing a using directive or an assembly reference?) "Cannot apply indexing to an expression of type 'Foo'"

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  • Is UTF-8 enough for all common languages?

    - by jack
    I just wanted to develop a translation app in a Django projects which enables registered users with certain permissions to translate every single message it appears in latest version. My question is, what character set should I use for database tables in this translation app? Looks like some european language characters cannot be stored in UTF-8?

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  • Need help with a SQL Query

    - by Jack
    I have created a table with the following structure- $sql = "CREATE TABLE followers ( uid int UNSIGNED NOT NULL UNIQUE, PRIMARY KEY(uid), follower_count int UNSIGNED , is_my_friend bool, status_count int UNSIGNED, location varchar(50) )"; I need to find the uid of the person with max(status_count+follower_count) and whose is_my_friend = 1 I wrote the following query but I ain't getting the correct uid. SELECT p.uid FROM (select uid,is_my_friend,max(follower_count+status_count) from followers) p WHERE p.is_my_friend = 1;

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  • jQuery.remove() - Is there a way to get the object back after you remove it?

    - by Jack Marchetti
    I basically have the same problem in this questions: Flash Video still playing in hidden div I've used the .remove jquery call and this works. However, I have previous/next buttons when a user scrolls through hidden/non-hidden divs. What I need to know is, once I remove the flash object, is there a way to get it back other than refreshing the page? Basically, can this be handled client side or am I going to need to implement some server side handling. detach() won't work because the flash video continues to play. I can't just hide it because the video continues to play as well.

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  • Rails date format in form field

    - by Jack
    Hello I'd like my dates in the mm/dd/year format in text fields. However, they currently displays as 2010-03-26. Is there a global setting I can set to change this? I tried the following, which seems to update the .to_s method, but form fields stay the same. ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!(:default => '%m/%d/%Y') Thanks

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  • How to give friend access to git repository without giving command line access?

    - by Jack Humphries
    I have some git repositories running on my server and I would like to give a friend read/write access to one. That's simple: I add him as a user, give him SSH access, and change the permissions to the repository folder. Everything works fine; I'm able to clone the git repository using Xcode and change things (ssh://www.example.com/repo.git). However, I do not want him to have command line access. If I recall correctly, Github does not give command line access to those who SSH in. I'm using Snow Leopard Server. Is this more of a server issue or a git issue? Do you have any idea where to begin? Setting the user's Login Shell to none (as opposed to /bin/bash) cuts off access to everything.

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  • [JAVA]Int to String COmmand

    - by Jack.
    I'm trying to make a piece of code that will yell out anything I input. So the command is 'yell' I want to be able to type 'yell (whatever i want here)' and it will yell it out. I've been able to do it with numbers but I can't do it with a String. So how can I go about that? int x = Integer.valueOf(cmd[1]); n.setNextForceTalk(new ForceTalk("Number: " + x)); That piece of code allows me to type 'yell (number)' and it will come out with whatever number I type. But how can I do it with text.

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  • How to control number of leading spaces in a GtkWidget?

    - by Jack
    How do I set the leading spaces in a GtkWidget? as you can see into below imagem, username/password widgets are a bit away from horizontal line when the window begins My code: GtkWidget *window; GtkWidget *login_label; GtkWidget *username_label, *password_label; GtkWidget *username_entry, *password_entry; GtkWidget *ok_button; GtkWidget *hbox0, *hbox1, *hbox2, *hbox3; GtkWidget *vbox; gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "hello"); gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER); gtk_window_set_default_size(GTK_WINDOW(window), 200, 300); g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL); login_label = gtk_label_new("Login"); username_label = gtk_label_new("Username: "); password_label = gtk_label_new("Password: "); username_entry = gtk_entry_new(); password_entry = gtk_entry_new(); gtk_entry_set_visibility(GTK_ENTRY(password_entry), FALSE); ok_button = gtk_button_new_with_label("Enter"); g_signal_connect(G_OBJECT(ok_button), "clicked", G_CALLBACK(print_username), ok_button); hbox0 = gtk_hbox_new(TRUE, 5); hbox1 = gtk_hbox_new(TRUE, 5); hbox2 = gtk_hbox_new(TRUE, 5); hbox3 = gtk_hbox_new(TRUE, 5); vbox = gtk_vbox_new(FALSE, 10); gtk_box_pack_start(GTK_BOX(hbox0), login_label, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox1), username_label, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox1), username_entry, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox2), password_label, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox2), password_entry, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox3), ok_button, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox0, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox1, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox2, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox3, FALSE, FALSE, 5); gtk_container_add(GTK_CONTAINER(window), vbox); gtk_widget_show_all(window); gtk_main();

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