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  • How to clear a textbox based on a checkbox using Javascript

    - by LoftyWofty
    I am trying to code in javascript (to avoid validation triggers at the server) to clear a text box if the checkbox associated with it is unchecked. I have this code ... <input type="checkbox" id="chkOTHER" onclick="document.getElementById('txtOtherFlag').value='';" /> <asp:TextBox ID="txtOtherFlag" runat="server" AutoPostBack="True" CausesValidation="True" ValidationGroup="ValidationGroup1"></asp:TextBox> The problem is the Javascript inside the checkbox is not triggering to remove the value in the text box. Even if this worked, it's incorrect as it would blank out the text box every time the checkbox is triggered whether it is checked or not. I need to resolve this in the client side only. Thank you

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  • Problems deleting cookies, won't unset (PHP).

    - by RemiX
    I've tried searching the php manual and internet on how to delete cookies and I've tried it the exact same way they all say: setcookie("name", '', 1); or setcookie("name", '', time()-3600); But when I check the cookies in the cookies dialog in Firefox, it's still there with the same value. I set this cookie using the following line: setcookie("name", $value, time() + 259200, $path); I found this question on stackoverflow: http://stackoverflow.com/questions/2497501/cookie-wont-unset, but none of the answers solved the problem. I also tried putting all paramaters in, like the author said, but it had no effect. Does anyone see the problem?

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  • Can hash tables really be O(1)

    - by drawnonward
    It seems to be common knowledge that hash tables can achieve O(1) but that has never made sense to me. Can someone please explain it? A. The value is an int smaller than the size of the hash table, so the value is its own hash, so there is no hash table but if there was it would be O(1) and still be inefficient. B. You have to calculate the hash, so the order is O(n) for the size of the data being looked up. The lookup might be O(1) after you do O(n) work, but that still comes out to O(n) in my eyes. And unless you have a perfect hash or a large hash table there are probably several items per bucket so it devolves into a small linear search at some point anyway. I think hash tables are awesome, but I do not get the O(1) designation unless it is just supposed to be theoretical.

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  • ASP.net PreInit() Vs Init()

    - by ASP.netBeginner
    From local forum i understood that PreInit can be used to handle the following PreInit() >Master pages can be called dynamically >Themes can be set dynamically >Programatically add controls to controls collection and i read Init() is for Init() In this event, we can read the controls properties (set at design time). We cannot read control values changed by the user because that changed value will get loaded after LoadPostData() event fires. Question I am not getting the point "We cannot read control values changed by the user".Where do users change the value of control?.Example would help me to understand the point.

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  • setfsuid() and python 2.5.4

    - by user331398
    Hi, I'm trying to use setfsuid() with python 2.5.4 and RHEL 5.4. Since it's not included in the os module, I wrapped it in a C module of my own and installed it as a python extension module using distutils. However when I try to use it I don't get the expected result. setfsuid() returns value indicating success (changing from a superuser), but I can't access files to which only the newly set user should have user access (using open()), indicating that fsuid was not truely changed. I tried to verify setfsuid() worked, by running it consecutively twice with the same user input The result was as if nothing had changed, and on every call the returned value was of old user id different from the new one. I also called getpid() from the module, and from the python script, both returned the same id. so this is not the problem. Just in case it's significant, I should note that I'm doing all of this from within an Apache daemon process (WSGI). Anyone can provide an explanation to that? Thank you

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  • Multiply with negative integer just by shifting.

    - by stex
    Hi, I'm trying to find a way to multiply an integer value with negative value just with bit shifting. Usually I do this by shifting with the power of 2 which is closest to my factor and just adding / subtracting the rest, e.g. x * 7 = ((x << 3) - x) Let's say I'd want to calculate x * -112. The only way I can imagine is -((x << 7) - (x << 4), so to calculate x * 112 and negate it afterwards. Is there a "prettier" way to do this?

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  • Why only random-access-iterator implements operator+ in C++?

    - by xopht
    I'd like get far next value for STL list iterator but it doesn't implement operator+, vector has it though. Why and how can I get the value where I want? I think I can do that if I call operator++ several times, but isn't that a little bit dirty? What I want to do is the following: list<int> l; ...omitted... list<int>::iterator itr = l.begin() + 3; // but, list iterator does not have // operator+ What is the best solution for what I want?

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  • DATETIME PROBLEM VB 2005

    - by haythamhamdy
    I AM USING VB2005 AND SQL SERVER 2000 PVAR_SQL_STR = "INSERT INTO GLR_US_PERIOD (ORG5_CODE,PERIOD_YEAR,PERIOD_CODE,PERIOD_NO,FROM_DATE,TO_DATE,INSERT_USER,INSERT_DATE) VALUES " _ & "('" & PVAR_COMPANY_CODE & "' ,'" & TextBox1.Text & "','" & Serial1.Text & "'," & TextBox2.Text & ", '" + DateTimePicker1.Value.ToString("D") + "' ,'" + DateTimePicker2.Value.ToString("D") + "','" & PVAR_USER_CODE & "','" + Now.ToString("F") + "')" Syntax error converting datetime from character string BECAUSE OF THIS PART ONLY Now.ToString("F") why i do not know but when i change into Now.ToString("D") it works well but it SAVES DATE ONLY I WANT TO INSERT DATE AND TIME THANKS

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  • Is it possible to embed C code in a C# project?

    - by Jonathan
    I know that it's possible to compile my C code into a dll, and then use P/Invoke to call that code. What I wondered if it was possible to have a chunk of C code embedded directly in my code, perhaps only available to one class... Something like this (non-working) example: public class MyClass { extern "C" { int do_something_in_c(int i) { return i*2; } } public int DoSomething(int value) { return do_something_in_c(value); } } I've been trying for a few hours using Visual Studio 2008, but I'm not getting anywhere, and I suspect that it isn't actually possible. Can anyone confirm or deny this? Thanks.

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  • How to get just free heap size (not together w stack/method mem) in Java?

    - by Pentium10
    I want to calculate the heap usage for my app. I would like to get a procent value of Heap size only. How do I get the value in code for the current running app? EDIT The upvoted answer is NOT complete/correct. The values returned by those methods include stack and method area too, and I need to monitor only heap size. With that code I got HeapError exception when I reached 43%, so I can't use those methods to monitor just heap.

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  • Facing difficulty in moving the two id's

    - by user1806560
    By means of <?php echo $productlist->productid;?> in href i am passing the productid,its fine based on that i can able to display the items. The url is looking like this when i am passing like this http://localhost/sample/index.php/userlogin/items/35 . <ul class="left_menu"> <li class="odd"><a href="<?php echo BASE_INDEX_URL;?>/userlogin/items/<?php echo $productlist->productid;?>"> <?php echo $productlist->productname; ?> </a></li> </ul> My model is taking the value like this public function items($productid=0) { } But i want to pass one more id as categoryid in the href, how can i do that My model is taking the value like this(for 2 parameters) public function items($productid=0,$categoryid=0) { }

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  • Warning: Trim expects

    - by user1257518
    I'm getting this warning Warning: trim() expects parameter 1 to be string, array given in .. which is my trim line. The full code is functioned to send an error when fields are empty. However, this error appears saying every field is empty, but only the 'native' field is meant to be required so thats my 2nd problem. Thanks for any help! session_start(); $err = array(); $user_id = intval($_SESSION['user_id']); // otherwise if (isset($_POST['doLanguage'])) { $link = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("Couldn't make connection."); // check if current user is banned $the_query = sprintf("SELECT COUNT(*) FROM users WHERE `banned` = '0' AND `id` = '%d'", $user_id); $result = mysql_query($the_query, $link); $user_check = mysql_num_rows($result); // user is ok if ($user_check > 0) { // check for empty fields foreach ($_POST as $key => $val) { $value = trim($val); if (empty($value)) { $err[] = "ERROR - $key is required"; } } // no errors if(empty($err)) { for($i = 0; $i < count($_POST["other"]); $i++) $native = mysql_real_escape_string($_POST['native'][$i]); $other = mysql_real_escape_string($_POST['other'][$i]); $other_list = mysql_real_escape_string($_POST['other_list'][$i]); $other_read = mysql_real_escape_string($_POST['other_read'][$i]); $other_spokint = mysql_real_escape_string($_POST['other_spokint'][$i]); $other_spokprod = mysql_real_escape_string($_POST['other_spokprod'][$i]); $other_writ = mysql_real_escape_string($_POST['other_writ'][$i]); // insert into the database $the_query = sprintf("INSERT INTO `language` (`user_id`,`native`,`other`,`other_list`,`other_read`, `other_spokint` ,`other_spokprod`,`other_writ` ) VALUES ('%d','%s','%s','%s','%s','%s','%s','%s')", $user_id,$native,$other,$other_list,$other_read, $other_spokint,$other_spokprod,$other_writ); // query is ok? if (mysql_query($the_query, $link) ){ // redirect to user profile header('Location: myaccount.php?id=' . $user_id); } } } }

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  • Long list of if statements in Java

    - by steve
    Hi, Sorry I can't find a question answering this, I'm almost certain someone else has raised it before. My problem is that I'm writing some system libraries to run embedded devices. I have commands which can be sent to these devices over radio broadcasts. This can only be done by text. inside the system libraries I have a thread which handles the commands which looks like this if (value.equals("A") { doCommandA() } else if (value.equals"B") { doCommandB() } else if etc. The problem is that there are a lot of commands to it will quickly spiral to something out of control. Horrible to look out, painful to debug and mind boggling to understand in a few months time.

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  • CouchDB- basic grouping question

    - by dnolen
    I have a user document which has a group field. This field is an array of group ids. I would like to write a view that returns (groupid as key) - (array of user docs as val). This mapping operation seems like a good beginning. function(doc) { var type = doc.type; var groups = doc.groups; if(type == "user" && groups.length > 0) { for(var i = 0; i < groups.length; i++) { emit(groups[i], doc); } } } But there's obviously something very wrong with my attempt at a reduce: function(key, values, rereduce) { var set = []; var seen = []; for(var i = 0; i < values.length; i++) { var _id = values[i]._id; if(seen.indexOf(_id) == -1) { seen.push(_id); set.push(values[i]); } } return set; } I'm running CouchDB 0.10dev. Any help appreciated.

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  • Stringly typed values table in sql, is there a better way to do this? (we're using MSSQL)

    - by Jason Hernandez
    We have have a table layout with property names in one table, and values in a second table, and items in a third. (Yes, we're re-implementing tables in SQL.) We join all three to get a value of a property for a specific item. Unfortunately the values can have multiple data types double, varchar, bit, etc. Currently the consensus is to stringly type all the values and store the type name in the column next to the value. tblValues DataTypeName nvarchar Is there a better, cleaner way to do this?

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  • Best use of Jquery sliders and PHP

    - by Coronier
    Hello there, I have two questions: What's the best way to send sliders' values to a PHP page ? I'm associating each slider (several per page) with an hidden form so far, but I wonder if there's a "cleaner" way to do this. Related to the 1st question; I've some trouble with the script: var score = $(this).slider( "option", "value" ); $(this).closest("input[type=='hidden']").val(score); It doesn't set the value of the hidden input. Can somebody tells me what's wrong ? Thanks

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  • Parameter pack aware std::is_base_of()

    - by T. Carter
    Is there a possibility to have a static assertion whether a type provided as template argument implements all of the types listed in the parameter pack ie. a parameter pack aware std::is_base_of()? template <typename Type, typename... Requirements> class CommonBase { static_assert(is_base_of<Requirements..., Type>::value, "Invalid."); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ parameter pack aware version of std::is_base_of() public: template <typename T> T* as() { static_assert(std::is_base_of<Requirements..., T>::value, "Invalid."); return reinterpret_cast<T*>(this); } };

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  • Is a Critical Section around an integer getter and setter redundant?

    - by Tim Gradwell
    Do critical sections inside trivial int accessors actually do anything useful? int GetFoo() { CriticalSection(crit_id); return foo; } void SetFoo(int value) { CriticalSection(crit_id); foo = value; } Is it possible for two threads to be attempting to read and write foo simultaneously? I'd have thought 'no' unless integers are written byte-at-a-time, in which case I can see the use. But I'd have though modern cpus would read/write integers in a single atomic action...

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  • [Scala] Applying overloaded, typed methods on a collection

    - by stephanos
    I'm quite new to Scala and struggling with the following: I have database objects (type of BaseDoc) and value objects (type of BaseVO). Now there are multiple convert methods (all called 'convert') that take an instance of an object and convert it to the other type accordingly - like this: def convert(doc: ClickDoc): ClickVO = ... def convert(doc: PointDoc): PointVO = ... def convert(doc: WindowDoc): WindowVO = ... Now I sometimes need to convert a list of objects. How would I do this - I tried: def convert[D <: BaseDoc, V <: BaseVO](docs: List[D]):List[V] = docs match { case List() => List() case xs => xs.map(doc => convert(doc)) } Which results in 'overloaded method value convert with alternatives ...'. I tried to add manifest information to it, but couldn't make it work. I couldn't even create one method for each because it'd say that they have the same parameter type after type erasure (List). Ideas welcome!

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  • PHP Math issue with negatives [closed]

    - by user1269625
    Possible Duplicate: PHP negatives keep adding I have this code here.... $remaining = 0; foreach($array as $value=>$row){ $remaining = $remaining + $row['remainingbalance']; } What its doing is that it is going through all the remaining balances in the array which are -51.75 and -17.85 with the code above I get -69.60 which is correct. But I am wondering how when its two negatives if they could subtract? Is that possible? I tried this $remaining = 0; foreach($clientArrayInvoice as $value=>$row){ $remaining = $remaining + abs($row['remainingbalance']); } but it gives me 69.60 without the negative. Anyone got any ideas? my goal is to take -51.75 and -17.85 and come up with -33.90 only when its a negative to do subtract. otherwise add

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  • Does this type of function or technique have a name?

    - by DHR
    HI there, I'm slightly new to programming, more of a hobby. I am wondering if a the following logic or technique has a specific name, or term. My current project has 7 check boxes, one for each day of the week. I needed an easy to save which boxes were checked. The following is the method to saved the checked boxes to a single number. Each checkbox gets a value that is double from the last check box. When I want to find out which boxes are checked, I work backwards, and see how many times I can divide the total value by the checkbox value. private int SetSelectedDays() { int selectedDays = 0; selectedDays += (dayMon.Checked) ? 1 : 0; selectedDays += (dayTue.Checked) ? 2 : 0; selectedDays += (dayWed.Checked) ? 4 : 0; selectedDays += (dayThu.Checked) ? 8 : 0; selectedDays += (dayFri.Checked) ? 16 : 0; selectedDays += (daySat.Checked) ? 32 : 0; selectedDays += (daySun.Checked) ? 64 : 0; return selectedDays; } private void SelectedDays(int n) { if ((n / 64 >= 1) & !(n / 64 >= 2)) { n -= 64; daySun.Checked = true; } if ((n / 32 >= 1) & !(n / 32 >= 2)) { n -= 32; daySat.Checked = true; } if ((n / 16 >= 1) & !(n / 16 >= 2)) { n -= 16; dayFri.Checked = true; } if ((n / 8 >= 1) & !(n / 8 >= 2)) { n -= 8; dayThu.Checked = true; } if ((n / 4 >= 1) & !(n / 4 >= 2)) { n -= 4; dayWed.Checked = true; } if ((n / 2 >= 1) & !(n / 2 >= 2)) { n -= 2; dayTue.Checked = true; } if ((n / 1 >= 1) & !(n / 1 >= 2)) { n -= 1; dayMon.Checked = true; } if (n > 0) { //log event } } The method works well for what I need it for, however, if you do see another way of doing this, or a better way to writing, I would be interested in your suggestions.

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  • Help with enums in Java

    - by devoured elysium
    Is it possible to have an enum change its value (from inside itself)? Maybe it's easier to understand what I mean with code: enum Rate { VeryBad(1), Bad(2), Average(3), Good(4), Excellent(5); private int rate; private Rate(int rate) { this.rate = rate; } public void increateRating() { //is it possible to make the enum variable increase? //this is, if right now this enum has as value Average, after calling this //method to have it change to Good? } } This is want I wanna achieve: Rate rate = Rate.Average; System.out.println(rate); //prints Average; rate.increaseRating(); System.out.println(rate); //prints Good Thanks

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