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• PHP Form (post) Repeating input in a tabel

  - by Sef

  Hello, I have a form (with post method) that takes the following input: - a certain name - a number - 3 checkboxes All this input gets generated and calculated in a table.(html code within the php) Everything gets properly calculated and displayed in a table. So my question: How do i make it possible after giving all those input to give in more input? Meaning i have made a hyperlink that goes back to the form itself (where i can give the input). So i can give in new data, and after submiting that again the table now contains 2 rows of values insteed of just 1. Not really sure what exactly i need for this. Regards.

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• Generate switch cases in php from an array?

  - by mopsyd

  Is it possible to generate the cases for a switch in php using an array? Something like: $x=array( 0 => 'foo', 1 => 'bar', 2 => 'foobar' ); $y='foobar' switch($y) { foreach($x as $i) { case $x: print 'Variable $y tripped switch: '.$i.'<br>'; break; } } I would like to be able to pull the case values from a database and loop through them with a while() loop.

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• What is the precedence of characters when sorting in MySQL, PHP, or just in general?

  - by FireCoding

  Question: Where can I find the precedence of characters when sorting in MySQL, PHP, or just in general on Linux and Windows OS? For example, everybody knows that a comes before b when performing an ascending sort on a string in MySQL. But what about other characters? Does the dollar-sign $ come before asterisk * ? Does a space come before an exclamation-mark? etc... What dictates the sort order? Does it use underlying ascii / UTF-8 values? Is it different for different technologies? Technologies to consider: Databases - MySQL / SQL / SQLite / Oracle / etc Programming languages (for string-sorting functions) - PHP / Javascript / ASP.NET / Visual C# / Python / Ruby / Objective C OS (i.e., sorting files by filename) - Windows / Linux / MacOS / iOS / Android

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• C# performance of static string[] contains() (slooooow) vs. == operator

  - by Andrew White

  Hiya, Just a quick query: I had a piece of code which compared a string against a long list of values, e.g. if(str == "string1" || str = "string2" || str == "string3" || str = "string4". DoSomething(); And the interest of code clarity and maintainability I changed it to public static string[] strValues = { "String1", "String2", "String3", "String4"}; ... if(strValues.Contains(str) DoSomething(); Only to find the code execution time went from 2.5secs to 6.8secs (executed ca. 200,000 times). I certainly understand a slight performance trade off, but 300%? Anyway I could define the static strings differently to enhance performance? Cheers.

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• template function error..

  - by sil3nt

  Hi there, I have function which takes in an parameter of a class called "Triple", and am returning the averge of 3 values of type float. template <typename ElemT> float average(Triple ElemT<float> &arg){ float pos1 = arg.getElem(1); float pos2 = arg.getElem(2); float pos3 = arg.getElem(3); return ( (pos1+pos2+po3) /3 ); } when i try compiling this i get q2b.cpp:32: error: template declaration of `float average' q2b.cpp:32: error: missing template arguments before "ElemT" not quite sure what this means.

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• how to make struct member pointer in assembly?

  - by sillis

  I`m trying to create a macro which would make easier to point to a structs member. Currently i am pointing to a structs member in assembly file using the STRUCT_NAME + offset method. For example if i want to point structs third member,i would have to do it like this: STRUCT_NAME + 3. This seems stupid way to do it, and if i insert more members in the struct, i have to update all the offset values in the code. Is there a way to point using STRUCT_NAME + macro(struct_name, member_name) ? I`m using texas instruments TMS320C28x hardware. Thanks!

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• Change selected value of drop down list with jQuery

  - by Phairoh

  I have a drop down list with known values. What I'm trying to do is set the drop down list to a particular value that I know exists using jQuery. Using regular JavaScript, I would do something like: ddl = document.getElementById("ID of element goes here"); ddl.value = 2; // 2 being the value I want to set it to. However, I need to do this with jQuery because I'm using a CSS class for my selector (stupid ASP.NET client ids...). Here are a few things I've tried: $("._statusDDL").val(2); // doesn't find 2 as a value $("._statusDDL").children("option").val(2) // also failed. How can I do it with jQuery?

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• greasemonkey code modification

  - by muqtar

  Hi,all.. A user has helped me find hidden values in a page and display it using alert. If there are radio buttons and one of them is related to this value,is there a way to select the radio button automatically rathar than displaying the value in alert box.. Thanks... the code is as follows: var inputs = document.getElementsByTagName('input'); for (i=0; i<inputs.length; i++) { if (inputs[i].getAttribute("name") == "ans") { alert(inputs[i].getAttribute("value")); } } this "value" must be selected in the radio button rathar than alerting...

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• Group Objects by Common Key

  - by Marshmellow1328

  I have a list of Customers. Each customer has an address and some customers may actually have the same address. My ultimate goal is to group customers based on their address. I figure I could either put the customers in some sort of list-based structure and sort on the addresses, or I could drop the objects into some sort of map that allows multiple values per key. I will now make a pretty picture: List: A1 - C1, A1 - C2, A2 - C3, A3 - C4, A3 - C5 Map: A1 A2 A3 C1 C3 C4 C2 C5 Which option (or any others) do you see as the best solution? Are there any existing classes that will make development easier?

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• which type is best for three radiobuttons?

  - by Manog

  Maybe you consider this question trivial but im just curious what is your opinion. I have three radiobuttons. "Show blue", "Show red" and "Show all". I did it with nullable boolean. There is collumn in database where blue is 0 and red is 1 so in metode i have to translate bool to int to compare those values (i do it in c#).Of course it works, but i wonder if it is the best solution. And question is wich type is best in this case? nullable bool, int, or maybe string?

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• Determining child count of path

  - by sqlnewbie

  I have a table whose 'path' column has values and I would like to update the table's 'child_count' column so that I get the following output. path | child_count --------+------------- | 5 /a | 3 /a/a | 0 /a/b | 1 /a/b/c | 0 /b | 0 My present solution - which is way too inefficient - uses a stored procedure as follows: CREATE FUNCTION child_count() RETURNS VOID AS $$ DECLARE parent VARCHAR; BEGIN FOR parent IN SELECT path FROM my_table LOOP DECLARE tokens VARCHAR[] := REGEXP_SPLIT_TO_ARRAY(parent, '/'); str VARCHAR := ''; BEGIN FOR i IN 2..ARRAY_LENGTH(tokens, 1) LOOP UPDATE my_table SET child_count = child_count + 1 WHERE path = str; str := str || '/' || tokens[i]; END LOOP; END; END LOOP; END; $$ LANGUAGE plpgsql; Anyone knows of a single UPDATE statement that does the same thing?

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• Query returning an ascending group number

  - by Dougman

  I have a query like below that has groups (COL1) and that group's values (COL2). select col1, col2 from (select 'A' col1, 1 col2 from dual union all select 'A' col1, 2 col2 from dual union all select 'B' col1, 1 col2 from dual union all select 'B' col1, 2 col2 from dual union all select 'C' col1, 1 col2 from dual union all select 'C' col1, 2 col2 from dual ) order by col1, col2; The output of this query looks like: COL1 COL2 ---- ---- A 1 A 2 B 1 B 2 C 1 C 2 What I need is a query that will return an ordered number increasing for each different group (COL1). It seems like there would be a simple way to accomplish this (maybe with analytics) but for some reason it is escaping me. GRPNUM COL1 COL2 ------ ---- ---- 1 A 1 1 A 2 2 B 1 2 B 2 3 C 1 3 C 2 I am running Oracle 10gR2.

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• why does InnoDB keep on growing without for every update?

  - by Akash Kava

  I have a table which consists of heavy blobs, and I wanted to conduct some tests on it. I know deleted space is not reclaimed by innodb, so I decided to reuse existing records by updating its own values instead of createing new records. But I noticed, whether I delete and insert a new entry, or I do UPDATE on existing ROW, InnoDB keeps on growing. Assuming I have 100 Rows, each Storing 500KB of information, My InnoDB size is 10MB, now when I call UPDATE on all rows (no insert/ no delete), the innodb grows by ~8MB for every run I do. All I am doing is I am storing exactly 500KB of data in each row, with little modification, and size of blob is fixed. What can I do to prevent this? I know about optimize table, but I cant do it because on regular usage, the table is going to be 60-100GB big, and running optimize will just stall entire server.

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• Easy way to apply a function to an array

  - by alex

  I am aware of array_walk() and array_map(). However when using the former like so (on an old project) it failed array_walk($_POST, 'mysql_real_escape_string'); Warning: mysql_real_escape_string() expects parameter 2 to be resource, string given. So I went with this slightly more ugly version foreach($_POST as $key => $value) { $_POST[$key] = mysql_real_escape_string($value); } So why didn't the first way work? What is the best way to map values of an array to a function?

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• exec sp_executesql error 'Incorrect syntax near 1' when using datetime parameter

  - by anne78

  I have a Ssrs report which sends the following text to the database : EXEC ( 'DECLARE @TeamIds as TeamIdTableType ' + @Teams + ' EXEC rpt.DWTypeOfSicknessByCategoryReport @TeamIds , ' + @DateFrom + ', ' + @DateTo + ', ' + @InputRankGroups + ', ' + @SubCategories ) When I view this in profiler it interprets this as : exec sp_executesql N'EXEC ( ''DECLARE @TeamIds as TeamIdTableType '' + @Teams + '' EXEC rpt.DWTypeOfSicknessByCategoryAndEmployeeDetailsReport @TeamIds, '' + @DateFrom + '', '' + @DateTo + '', '' + @InputRankGroups + '', '' + @SubCategories )',N'@Teams nvarchar(34),@DateFrom datetime,@DateTo datetime,@InputRankGroups varchar(1),@SubCategories bit',@Teams=N'INSERT INTO @TeamIds VALUES (5); ',@DateFrom='2010-02-01 00:00:00',@DateTo='2010-04-30 00:00:00',@InputRankGroups=N'1',@SubCategories=1 When this sql runs it errors, on the dates. I have tried changing the format of the date but it does not help. If I remove the dates it works fine. Any help would be appreciated.

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• How to perform dynamic formatting with perl during write?

  - by Bee

  I have a format which is defined like below: format STDOUT = ------------------------------------ |Field1 | Field2 | Field3 | ------------------------------------ |@<<<<<<<<<<| @<<<<<<<<<<<| @<<<<< |~~ shift(@list1),shift(@list2),shift(@list3) ------------------------------------ . write STDOUT; So the questions are as below: Is it possible to make the list of values printed dynamic? e.g. If list 1 contains 12 elements, and if $flag1 is defined, then print only elements 0..10 instead of all 12. I tried doing this by passing $flag as a parameter to the sub which generates the report. However, the last defined FORMAT seems to always take precedence and the final write when it happens, applies the last format no matter what the condition is. Is it possible to also add/hide fields using the same process. e.g. If $flag2 is defined, then add an additional field Field4 to the list?

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• Fastest method for SQL Server inserts, updates, selects

  - by Ian

  I use SPs and this isn't an SP vs code-behind "Build your SQL command" question. I'm looking for a high-throughput method for a backend app that handles many small transactions. I use SQLDataReader for most of the returns since forward only works in most cases for me. I've seen it done many ways, and used most of them myself. Methods that define and accept the stored procedure parameters as parameters themselves and build using cmd.Parameters.Add (with or without specifying the DB value type and/or length) Assembling your SP params and their values into an array or hashtable, then passing to a more abstract method that parses the collection and then runs cmd.Parameters.Add Classes that represent tables, initializing the class upon need, setting the public properties that represent the table fields, and calling methods like Save, Load, etc I'm sure there are others I've seen but can't think of at the moment as well. I'm open to all suggestions.

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• Splitting a double in two, C#

  - by Stacey

  I'm attempting to use a double to represent a bit of a dual-value type in a database that must sometimes accept two values, and sometimes accept only one (int). So the field is a float in the database, and in my C# code, it is a double (since mapping it via EF makes it a double for some reason... ) So basically what I want to do .. let's say 2.5 is the value. I want to separate that out into 2, and 5. Is there any implicit way to go about this?

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• Using Large Arrays in VB.NET

  - by Tim

  I want to extract large amounts of data from Excel, manipulate it and put it back. I have found the best way to do this is to extract the data from an Excel Range in to a large array, change the contents on the array and write it back to the Excel Range. I am now rewriting the application using VB.NET 2008/2010 and wish to take advantage of any new features. Currently I have to loop through the contents of the array to find elements with certain values; also sorting large arrays is cumbersome. I am looking to use the new features, including LINQ to manipulate the data in my array. Does anybody have any advice on the easiest ways to filter / query, sort etc. data in a large array. Also what are the reasonable limits to the size of the array? ~Many Thanks

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• SQL Modify question

  - by Jeff

  I need to replace a lot of values for a Table in SQL if the inactivity is greater then 30 days. I have UPDATE VERSION SET isActive = 0 WHERE customerNo = ( SELECT c.VersionNo FROM Activity b INNER JOIN VERSION c ON b.VersionNo = c.VersionNo WHERE (Months_between(sysdate, b.Activitye) > 30) ); It only works for one value though, if there is more then one returned it fails. What am I missing here? If someone could educate me on what is going on, I'd also appreciate it.

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• Copy a value based on criteria Salesforce

  - by Robert

  Hi all, On a Salesforce.com opportunity I have a number of custom fields that are potential options that the end client will eventually select. Option 1 (Desc Field) Option 1 (Value) Option 2 (Desc Field) Option 2 (Value) Option 3 (Desc Field) Option 3 (Value) At a future point the user will ultimately choose one of the options as the preferred option. What I want is then the value for the chosen option to be stored in another field without the user having to enter it again. A “nice to have” would also be that all 3 option descriptions, values and selected value are locked once this is done. Any ideas?

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• TextAppearance_Holo_Large - No resource found

  - by npmaster

  When compiling my app I get the following error: android-apt-compiler: ... \res\values-v14\styles.xml:12: error: Error retrieving parent for item: No resource found that matches the given name '@android:style/TextAppearance_Holo_Large. The code it is complaining about is: <style name="Title" parent="@android:style/TextAppearance_Holo_Large"> <item name="android:layout_height">wrap_content</item> <item name="android:layout_width">wrap_content</item> </style> I checked my manifest file and I have set the SDK to: <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="17" /> Which i believe allows for using the Holo Themes. I am using Android Studio though I doubt that is the cause of the error. Any ideas what I am doing wrong?

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• Rotation in a Vector2d class in Java

  - by wanstein

  I've been working on this for one hour, just can't get it. I have a Vector2d class: public class Vector2d { public double x = 0.0; public double y = 0.0; .... } This vector class has a rotate() method which is causing me trouble. The first snippet seems to make the x and y values smaller and smaller. The second one works just fine! Am I missing something simple here? public void rotate(double n) { this.x = (this.x * Math.cos(n)) - (this.y * Math.sin(n)); this.y = (this.x * Math.sin(n)) + (this.y * Math.cos(n)); } This works: public void rotate(double n) { rx = (this.x * Math.cos(n)) - (this.y * Math.sin(n)); ry = (this.x * Math.sin(n)) + (this.y * Math.cos(n)); x = rx; y = ry; } I just can't spot any difference there

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• SQL: How to use a column that was just added

  - by sbenderli

  I am trying to add 2 columns and then I would like to set some values to them but I get a compile-error saying the column does not exist. I am using the following script: IF NOT EXISTS (select column_name from INFORMATION_SCHEMA.columns where table_name = 'SYSTM_FRM' and column_name = 'SF_Ip_TXT') ALTER TABLE SYSTM_FRM add SF_Ip_TXT NVARCHAR(20) IF NOT EXISTS (select column_name from INFORMATION_SCHEMA.columns where table_name = 'SYSTM_FRM' and column_name = 'SF_Port_NUM') ALTER TABLE SYSTM_FRM add SF_Port_NUM int Update dbo.SYSTM_FRM SET dbo.SYSTM_FRM.SF_Ip_TXT = dbo.FRM.FRM_Ip_TXT, dbo.SYSTM_FRM.SF_Port_NUM = dbo.FRM.FRM_Port_NUM FROM dbo.FRM INNER JOIN dbo.SYSTM_FRM ON dbo.FRM.FRM_RCRD_NUM = dbo.SYSTM_FRM.SF_FrameRecord_NUM Is there any way to use a column that I am adding in the same script?

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• Efficient mapping for a particular finite integer set

  - by R..

  I'm looking for a small, fast (in both directions) bijective mapping between the following list of integers and a subset of the range 0-127: 0x200C, 0x200D, 0x200E, 0x200F, 0x2013, 0x2014, 0x2015, 0x2017, 0x2018, 0x2019, 0x201A, 0x201C, 0x201D, 0x201E, 0x2020, 0x2021, 0x2022, 0x2026, 0x2030, 0x2039, 0x203A, 0x20AA, 0x20AB, 0x20AC, 0x20AF, 0x2116, 0x2122 One obvious solution is: y = x>>2 & 0x40 | x & 0x3f; x = 0x2000 | y<<2 & 0x100 | y & 0x3f; Edit: I was missing some of the values, particularly 0x20Ax, which don't work with the above. Another obvious solution is a lookup table, but without making it unnecessarily large, a lookup table would require some bit rearrangement anyway and I suspect the whole task can be better accomplished with simple bit rearrangement. For the curious, those magic numbers are the only "large" Unicode codepoints that appear in legacy ISO-8859 and Windows codepages.

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