Compare a specific array element to a char with "if" in C?
- by chutsu
Rather Trivial Question.
So I tried to do this:
if(array[0]=="some_string")
but obviously it doesn't work...
What do I have to do?
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Saving any file to in the database, just convert it to a byte array?
- by Blankman
Is converting a file to a byte array the best way to save ANY file format to disk or database var binary column? So if someone wants to save a .gif or .doc/.docx or .pdf file, can I just convert it to a bytearray UFT8 and save it to the db as a stream of bytes?Read the article
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how to put array of user control in the columns of Grid.
- by jolly
Hi I have array of Employee data which includes photo,description, title name,salary. I have to show each employee data in separate panel control structure that means if I have 10 employees there will be 10 panels. and I have to show these panels in a grid which has two columns. Also width of the panel in each column will vary according to main page size.Read the article
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Best way to find an item in a JavaScript Array ?
- by zimbatm
What is the best way to find if an object is in an array ? This is the best way I know: function include(arr, obj) { for(var i=0; i<arr.length; i++) { if (arr[i] == obj) return true; } } include([1,2,3,4], 3); // true include([1,2,3,4], 6); // undefinedRead the article
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Finding the maximum weight subsequence of an array of positive integers?
- by BeeBand
I'm tring to find the maximum weight subsequence of an array of positive integers - the catch is that no adjacent members are allowed in the final subsequence. The exact same question was asked here, and a recursive solution was given by MarkusQ. He provides an explanation, but can anyone help me understand how he has expanded the function? How does this solution take into consideration non-adjacent members?Read the article
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When i am replacing or inserting an object into nsmutable array, I am getting Exception.
- by Madan Mohan
Hi, While replacing or inserting into an nsmutable array, I am getting exception as Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '* -[NSCFArray replaceObjectAtIndex:withObject:]: mutating method sent to immutable object' [list replaceObjectAtIndex:indexRow withObject:editcontacts]; //or [list insertObject:editcontacts atIndex:indexRow]; please help me. Madan, Thank You.Read the article
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Why does dynamic array always double by a factor of 2?
- by Phoenix
I was wondering how does one decide the resizing factor by which dynamic array resizes ? On wikipedia and else where I have always seen the number of elements being increased by a factor of 2? Why 2? Why not 3? how does one decide this factor ? IF it is language dependent I would like to know this for Java.Read the article
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convert table of input values into 2D array or struct?
- by Henry
What's the easiest way to convert a table of values (2D grid like Excel), into a 2D array or struct in ColdFusion? Thought of using dot in the name and eval them to become struct, but AFAIK name attribute of input field can only contains alpha numeric and underscore, and first char must be an alpha char.Read the article
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how can i export some values in mysql to an php array?
- by sebastian
hi, here is what i'm trying to make. i want to select all the users from a table. for all of these users i want to make a for cycle. from what i know for has three statements something like so for($i=0;$i++;$i=$max) how can i put the user id's in to an array so i can define my $max variable? or can this be done in an other method? thanks,Read the article
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How to convert a string of ints Eg 45 34 21 22 into int's and store them in an array ? in C programm
- by Srinivasa Varadan
Hi , I have a string val = "14 22 33 48"; int matrix[5]; I need to insert each of the values in the string into the respective location in the array Eg: matrix[0] = 14; matrix[1] = 22; matrix[2] = 33; matrix[3] = 48; How do I do this ?Read the article
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Is there a work around for invalid octal digit in an array?
- by sircrisp
I'm trying to create an array which will hold the hours in a day so I can loop through it for a clock. I have: int hourArray[24] = {12, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11}; I am getting the error on the following numbers in order 08, 09, 08, 09. It tells me: Error: invalid octal digit I've never run into this before and I'm wondering if there is any way around it?Read the article
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How to simulate array of events in C#? (like in VB6)
- by blez
I have an object with event handlers and I want to make something similar to VB6 to make array of that object. Something like: MyHandler(object sender, MyEventArgs e, int IndexOfObject) <-Read the article
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How can I pull a Google Doc spreadsheet into a PHP array?
- by markdorison
Is it possible for me to access a Google Docs spreadsheet (possibly as a CSV file?) and build that into a PHP array?Read the article
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[sublayer array] insertSublayer:above: atomic if superLayer stays the same?
- by mahal tertin
Setting: * two threads * one moves layers inside sublayer-array with insertSublayer:above: * the other accesses superlayer of the moved layer at the very same time Question: * is superlayer of the moved layer nil in any moment of insertSublayer:above: or below:?Read the article
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How do I represent integer array in Visual Studio 2010's UML class diagrams?
- by AndrejaKo
How do I represent integer array in Visual Studio 2010's UML class diagrams? I'm new to UML, so I could be missing something obvious here. Should I use Is ordered and Is unique?Read the article
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PHP looping through an array to fetch a value for each key from database (third normal form)
- by zomboble
I am building a system, mostly for consolidating learning but will be used in practice. I will try and verbally explain the part of the E-R diagram I am focusing on: Each cadet can have many uniformID's Each Uniform ID is a new entry in table uniform, so cadets (table) may look like: id | name | ... | uniformID 1 | Example | ... | 1,2,3 uniform table: id | notes | cadet 1 | Need new blahh | 1 2 | Some stuff needed | 1 3 | Whatever you like | 1 On second thought, looks like I wont need that third column in the db. I am trying to iterate through each id in uniformID, code: <?php $cadet = $_GET['id']; // set from URL $query = mysql_query("SELECT `uniformID` FROM `cadets` WHERE id = '$cadet' LIMIT 1") or die(mysql_error()); // get uniform needed as string // store it while ($row = mysql_fetch_array($query)) { $uniformArray = $row['uniformID']; } echo $uniformArray . " "; $exploded = explode(",", $uniformArray); // convert into an array // for each key in the array perform a new query foreach ($exploded as $key => $value) { $query(count($exploded)); $query[$key] = mysql_query("SELECT * FROM `uniform` WHERE `id` = '$value'"); } ? As I say, this is mainly for consolidation purposes but I have come up with a error, sql is saying: Fatal error: Function name must be a string in C:\wamp\www\intranet\uniform.php on line 82 line 82 is: $query[$key] = mysql_query("SELECT * FROM `uniform` WHERE `id` = '$value'"); I wasn't sure it would work so I tried it and now i'm stuck! EDIT: Thanks to everyone who has contributed to this! This is now the working code: foreach ($exploded as $key => $value) { //$query(count($exploded)); $query = mysql_query("SELECT * FROM `uniform` WHERE `id` = '$value'"); while ($row = mysql_fetch_array($query)) { echo "<tr> <td>" . $row['id'] . "</td> <td>" . $row['note'] . "</td> </tr>"; } } Added the while and did the iteration by nesting it in the foreachRead the article
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What is the fastest search which can be done on a non-sorted array?
- by Jay
How to search fast in a non-sorted array? I am unable to think of any other search mechanism apart from linear search. Any pointers will be helpful.Read the article
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In an array of buttons, how can you tell which button was clicked?
- by Michael Seltenreich
If I have an array of buttons, how can I tell which button was clicked? example below var i=0 CreateButton = new function () { savebutton[i]=NewButton() i++ } every time a user runs the function a new button is generated. the first button is savebutton[0] the second is savebutton[1] and so on potentially infinity times. when later the user presses the button I want the screen to alert it's index number (or 'i'). is there any way to make this work in arrays?Read the article
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Is there a way to get each row's value from a database into an array?
- by Guyver
Say I have a query like the one below. What would be the best way to put each value into an array if I don't know how many results there will be? Normally I would do this with a loop, but I have no idea how many results there are. Would I need run another query to count the results first? <CFQUERY name="alllocations" DATASOURCE="#DS#"> SELECT locationID FROM tblProjectLocations WHERE projectID = '#ProjectName#' </CFQUERY>Read the article
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how to take user input in Array using java?
- by sadia
how to take user input in Array using Java? i.e we are not initializing it by ourself in our program but the user is going to give its value.. please guide!!Read the article
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How many numbers in an array are smaller than a given number?
- by Raihan
The naive one is O(n). Is there a one that is O(log n) or even O(1)? How about a sorted array? How about using binary search tree?Read the article
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How can I make `new[]` default-initialize the array of primitive types?
- by sharptooth
Every now and then I need to call new[] for built-in types (usually char). The result is an array with uninitialized values and I have to use memset() or std::fill() to initialize the elements. How do I make new[] default-initialize the elements?Read the article
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Adding additional sorting attributes to array of records...then sorting!
- by keruilin
Let's say I run an ActiveRecord query and it returns 3 results, with a bunch of attributes. I want to add 3 attributes to each record in the Array so I can do sorting at a code-level. These 3 include: num_comments, num_views, last_view. How do I add these attributes? How do I then sort the records, in order of precendence, by num_comments AND by num_views AND by last_view?Read the article
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how to represent an integer array using java.util.BitSet ?
- by nd81
I need to represent an array of integers using BitSet. Can somebody explain me the logic required to do this ?Read the article
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How can I write an extension method that converts a System.Drawing.Bitmap to a byte array?
- by Patrick Szalapski
How can I write an extension method that converts a System.Drawing.Bitmap to a byte array? Why not: <Extension()> _ Public Function ToByteArray(ByVal image As System.Drawing.Bitmap) As Byte() Using ms = New MemoryStream() image.Save(ms, image.RawFormat) Return ms.ToArray() End Using End Function Yet when I use that, I get "System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+." What am I doing wrong?Read the article
