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• PHP sort multidimensional array by value

  - by stef

  How can I sort this array by the value of the "order" key? Even though the values are currently sequential, they will not always be. Array ( [0] => Array ( [hashtag] => a7e87329b5eab8578f4f1098a152d6f4 [title] => Flower [order] => 3 ) [1] => Array ( [hashtag] => b24ce0cd392a5b0b8dedc66c25213594 [title] => Free [order] => 2 ) [2] => Array ( [hashtag] => e7d31fc0602fb2ede144d18cdffd816b [title] => Ready [order] => 1 ) )

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• Getting id of row just inserted into MySQL database

  - by James P

  I have my table columns set like this: likes(id, like_message, timestamp) id is the primary key that is auto incrementing. This is the SQL that I use to add a row: $sql = "INSERT INTO `likes` (like_message, timestamp) VALUES ('$likeMsg', $timeStamp)"; Everything works, but now I need to throw back the id attribute of the newly inserted row. For example, if I insert a row and the id of that row is 13, I need to echo out 13 so my AJAX request can pick that up and use it. Any help would be appreciated, as well as related code samples. 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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• dabbledb + iPhone

  - by user193545

  I have been using DabbbleDB online database for storing/retrieving values for one of my iPhone applications. I am using their JSON response for retrieving the records. The problem that I am facing is that if there are a large number of records in the database, it takes a long time to get the response from the server and then to parse the JSON response. Instead I would like to to get a set of records at a time and run a loop to fetch all the records in background. I do not know whether we can query for a set of records at a time from online databases like DabbleDB. Anybody having an idea, please help.

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• JUnit - assertSame

  - by Michael

  Can someone tell me why assertSame() do fail when I use values 127? import static org.junit.Assert.*; ... @Test public void StationTest1() { .. assertSame(4, 4); // OK assertSame(10, 10); // OK assertSame(100, 100); // OK assertSame(127, 127); // OK assertSame(128, 128); // raises an junit.framework.AssertionFailedError! assertSame(((int) 128),((int) 128)); // also junit.framework.AssertionFailedError! } I'm using JUnit 4.8.1.

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• SQL most popular

  - by Brae

  I have a mysql table with items in relation to their order. CREATE DATABASE IF NOT EXISTS `sqltest`; USE `sqltest`; DROP TABLE IF EXISTS `testdata`; CREATE TABLE `testdata` ( `orderID` varchar(10) DEFAULT NULL, `itemID` varchar(10) DEFAULT NULL, `qtyOrdered` int(10) DEFAULT NULL, `sellingPrice` decimal(10,2) DEFAULT NULL ) INSERT INTO `testdata`(`orderID`,`itemID`,`qtyOrdered`,`sellingPrice`) values ('1','a',1,'7.00'),('1','b',2,'8.00'),('1','c',3,'3.00'),('2','a',1,'7.00'),('2','c',4,'3.00'); Intended Result: A = (1+1)2 B = 2 C = (2+4)6 <- most popular How do I add up all the qty's for each item and result the highest one? It should be fairly strait forward but I'm new to SQL and I can't work this one out :S Solution needs to be mysql and or php. I guess there needs to be some sort of temporary tally variable for each item ID, but that seems like it could get messy with too many items.

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• Refreshing the asp.net web page after validation

  - by user279521

  Hi, I have an asp.net web page (C# 2008) where the user would enter an EmployeeID, and when they tab out of the textbox, they get a messagebox prompting them to select one of two values from a dropdown listbox. The code for the message prompt in the codebehind is : Response.Write("<script>window.alert('Please select Alpha or Beta')</script>"); After the prompt is displayed, and the user clicks "ok" and returns to the page, the text on the page appears distorted (the text in labels are a size larger, the labels get wrapped to another line etc) I tried putting a Response.Redirect("UserProfileMaint.aspx"); after the messagebox in the codebehind, but now, the messagebox does not appear; I want to display the messagebox validation, and ensure the appearance of the text on the page is not distorted. How can I do this?

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• Problem in printing the desired value of strlen in character array

  - by tushar

  char p[4]={'h','g','y'}; cout<<strlen(p); This code prints 3. char p[3]={'h','g','y'}; cout<<strlen(p); This prints 8. char p[]={'h','g','y'}; cout<<strlen(p); This again prints 8. Please help me as I can't figure out why three different values are printed by changing the size of the array.

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• array of objects of a class

  - by anurag18294

  #include class test{ int a; char b; public: test() { cout<<"\n\nDefault constructor being called"; } test(int i,char j) { a=i; b=j; cout<<"\n\nConstructor with arguments called"; } }; int main() { test tarray[5]; test newobj(31,'z'); }; In the above code snippet can we intialize values to tarray[5].

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• SQL and multiple statements in stored procedure

  - by Sjemmie

  I'm working on SQL server 2005 and I have a very simple stored procedure: create PROCEDURE [dbo].[tblTabel_Insert] @ID int, @Code nvarchar(50) = null AS SET NOCOUNT ON; IF EXISTS (SELECT ID, code FROM tblTabel WHERE ID = @ID and code = @Code) UPDATE tblTabel SET ID = @ID,code = @Code WHERE ID = @ID ELSE BEGIN INSERT INTO tblTabel (ID,code) VALUES ( @ID ,@Code); END My question is: is it posible to have multiple queries in my stored procedure ? I want to add the lines UPDATE tblTabelB SET ID = @ID,code = @Code WHERE ID = @ID UPDATE tblTabelC SET ID = @ID,code = @Code WHERE ID = @ID in my if exists section. How do I change my stored procedure in the correct way ?

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• Having access to a private variable from other classes in Java

  - by Crystal

  If I want to create a form that adds people to a List, how do I have access to that List from another class? Where would I define that List so other classes can access the members, the size, etc? For example, if I have Class Foo that has the GUI for my form, along with buttons to add and remove people to the List, it would make sense to me to declare the List as a private instance variable of Class Foo. But then if I have another class, Class Bar, how does it get the values that are currently in that List to update some other graphical components? Or is that the wrong place to declare the List in general? Thanks.

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• javascript error : periodLookup[periodStr] is undefined, why is it throwing this error?

  - by Mo

  Hi i have this method: set_period_help_text: function(periodInput){ var metric = MonitorMetric.getSelectedMetric(); var periodStr = $('select[name=metric_period]').val(); var datapoints = Number(periodInput.attr("value")); var period = datapoints * periodLookup[periodStr][0]; } var periodLookup = { "OneMinute": [1, "minute"], "FiveMinute": [5, "minute"], "OneHour": [1, "hour"], "OneDay": [1, "day"], "OneWeek": [1, "week"] }; where var periodStr is being retrived from a dropdown menue that only has the values: "OneMinute" "FiveMinute" "OneHour" "OneDay" "OneWeek" i get a java script error when the page loads: periodLookup[periodStr] is undefined [Break on this error] var period = datapoints * periodLookup[periodStr][0];

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• Modifying SQL XML ?olumn

  - by Chinjoo

  I have an XML column in one of my table. For example I have an Employee table with following fields: Name (varhcar) | Address (XML) The Address field is having values like <Address> <Street></Street> <City></City> </Address> I have some n number of rows already in the table. Now I want to insert a new node - Country to all the rows in tha table. With default: <Country>IND</Country>. How can I write the query for this. I want all the existing data to be as it is with adding the country node to all the Address column XML.

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• What is the point of Convert.ToDateTime(bool)?

  - by Paul Alan Taylor

  I was doing some type conversion routines last night for a system I am working on. One of the conversions involves turning string values into their DateTime equivalents. While doing this, I noticed that the Convert.ToDateTime() method had an overload which accepted a boolean parameter. First question? Under what circumstances could this ever be useful? I went a little further and tried to execute the method in QuickWatch. Either way ( true or false ), the routine returns an InvalidCastException. Second question? Why is this method even here?

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• Scalable stl set like container for C++

  - by Pqr

  Hi, I need to store large number of integers. There can be duplicates in the input stream of integers, I just need to store distinct amongst them. I was using stl set initially but It went OutOfMem when input number of integers went too high. I am looking for some C++ container library which would allow me to store numbers with the said requirement possibly backed by file i.e container should not try to keep all numbers in-mem. I don't need to store this data persistently, I just need to find unique values amongst it.

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• Object changed while deserialization

  - by neoms21

  I'm serializing an object and storing the serialized value in db and getting the deserialization to work fine as well after getting values from db. But problem occurs if the existing object is modified and a new property is added in the class. Then while deserializing it looks for that property in serialized text and upon not finding it there, I get the following error System.Runtime.Serialization.SerializationException: Member 'temp' was not found. Is there any way I can know if new property was not there while serialization and can skip that? I'm using custom serialization.

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• pointer and malloc [closed]

  - by gcc

  How many methods/ways are there taking input by using with pointer and dynamic memory? Input: 3 1 2 n k l 2 1 2 p 4 55 62 * # x (x is stop value, first input always integer) Example code: p=malloc(sizeof(int)); scanf("%d",&num_arrays); while(1) { scanf("%c",&(*(p+i))); if(*(p+i)=='x') break; ++i; } "3" is stored in num_arrays. The other input values are stored in pointer[array].

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• Executing multiple update statements in PHP

  - by theband

  I have three update statements to be executed in PHP, i am getting the values of all these as return parameters. How to execute each statement independely and finally show the end user the result that it has been successfully updated. <?php public function name($parameter1,$parameter2.... $parametern) { $records=array(); $sql=""; $sql2=""; $sql3=""; $result=mysql_query($sql); //return $result; if(!$result){throw new Exception(mysql_error());} if(mysql_num_rows($result)==0){return $records;} while($row=mysql_fetch_assoc($result)){$records[]=$row;} return $records; } ?> Then how finally we can get the result in my row object.

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• In yii how to access other tables fields

  - by user1636115

  I am creating project in yii framework. I am having table as- Qbquestion QbquestionOption -questionId -optionId -question -questionId -userId -option -isPublished -isAnswer In QbquestionOption controller i want to access Qbquestion tables fields. I had written quesry as- $Question=Qbquestion::model()->findAllByAttributes(array("questionId"=>$number)); where $number is some random number. When i am using its fields as= $Question-isPublished then its giving error as "trying to get access to property of non-object" Statement var_dump($Question) is showing all record and all values of Qbquestion table. So how can i access records? Please help me

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• Please help me out in fetching the desired result from below given DB table structure of MySQL..

  - by OM The Eternity

  Hi All below are the table structures according to which I have to develop the desired output(given at the end) tbl_docatr docatr_id doc_id docatrtype_id docatr_float docatr_int docatr_date docatr_varchar docatr_blob 1 12 1 NULL NULL NULL testing [BLOB - NULL] 2 12 2 NULL NULL NULL Tesitng [BLOB - NULL] tbl_docatrtype docatrtype_id docatrtypegroup_id docatrtypetype_id docatrtype_name 1 1 4 Name 2 1 4 Company Name tbl_docatrtypetype docatrtypetype_id docatrtypetype_name 1 Float 2 Int 3 Date 4 String line Above are three tables from which I have to display the desired output as Name : testing Company Name : Tesitng such that at first step I have doc_id then I get docatrtype_id and then docatrtypetype_id acording to these values i have to fetch the result. Also the query must see the doactrtypetype_id from table tbl_docatrtypetype and fetch the result from tbl_docatr from respective column docatr_float, docatr_int, docatr_date, docatr_varchar, docatr_blob Please help!!!

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• read integers from a file into a vector in C++

  - by user2922063

  I am trying to read an unknown number of double values stored on separate lines from a text file into a vector called rainfall. My code won't compile; I am getting the error no match for 'operator>>' in 'inputFile >> rainfall' for the while loop line. I understand how to read in from a file into an array, but we are required to use vectors for this project and I'm not getting it. I appreciate any tips you can give on my partial code below. vector<double> rainfall; // a vector to hold rainfall data // open file ifstream inputFile("/home/shared/data4.txt"); // test file open if (inputFile) { int count = 0; // count number of items in the file // read the elements in the file into a vector while ( inputFile >> rainfall ) { rainfall.push_back(count); ++count; } // close the file

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• Jquery, ajax() and each(), how to wait untill all info is really loaded?

  - by Moustard

  Hello, I have a function using $.ajax() to get values from an XML file, when the info is loaded and success event is fired, I use $(xml).find('').each(function(){}); to populate some vars... function getData() { $.ajax({ type: 'GET', url : 'info.xml', dataType: 'xml', success: function(xml) { $(xml).find('DATAS').each(function() { date = new Date($(this).attr('DATE')); alert(date); }) //Here I have a bigger find/each that should take more time }, error: function() { return false; } }); } In this case, when I trigger the function from the document ready function, the alert shows the right data, but If I remove the alert from the function and try this instead, date wont be defined yet: $(document).ready(function() { if(getData() != false) { alert(date); } }); I guess in this case the data is not ready yet? Is there a way to keep control on when the whole each() traversing is finished and ready?

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• Changing populated DataTable column data types

  - by TonE

  Hi, I have a System.Data.DataTable which is populated by reading a CSV file which sets the datatype of each column to string. I want to append the contents of the DataTable to an existing database table - currently this is done using SqlBulkCopy with the DataTable as the source. However, the column data types of the DataTable need to be changed to match the schema of the target database table, handling null values. I am not very familiar with ADO.NET so have been search for a clean way of doing this? Thanks.

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• Label field problem in the treenode Tag. (Struts2/Ajax)

  - by ryan

  I'm using struts as a framework for a web-app. The following code runs inside a loop where I access the database to retrieve values to be used as nodes for a tree. <s:set name="categoryValue" value= "%{'<%=rs.getString("category")%>'}"> </s:set> <sx:treenode id="child1" label ="%{#categoryValue}"/> The error I get is "/jsp/tree.jsp(249,65) equal symbol expected" However if i give <s:set name="categoryValue" value= "%{'Test'}"> the value Test is obtained. Can anyone tell me how to set the value of the 'label' with strings?

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• return only one document for each filter defined in the query

  - by Garytxo

  Hi all, In one of my latest projects I use Solr 1.4 for searching products.However I have ran into a slight problem, which I aint sure if its possible to do using Solr. All products are indexed by "country" and "category" and the "id", "class" and "description" are stored values. I now have been requested to extract a sample list of products that we have for a give "category" and "ONLY RETURNING ONE" product for each country where the product is available. In my current implementation, I have a dismax query to get a list of all the countries that correspond to the catergory, then I call again solr to extract all products for each country, limiting the no. rows by the size of the countries found in the previous query. The problem I have with this current implementation is I can not be certain that I have one product for each country in the list. Therefore would anyone know if it possible to tell solr that you want only one product per country provided in the query? Any guidance would be useful.

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