I've been using awk to process hourly weather data, storing 10 arrays with as much as 8784 data elements. If an array is incomplete, i.e., stops at 8250, etc., after the "END" command I fill the remaining array elements with the last available value for the array. However, when I then print out the complete arrays, I get 0's for the fil...
Hi, I've got an array, indexed by keys, eg: array( 'key1' => 'value1', 'key2' => 'value2', ... 'key57' => 'value57' ) How to "filter" that array, in order to only have, for example: array( 'key2' => 'value2', 'key57' => 'value57' ) and preserve keys. I know array_filter() function, but I do NOT want to EXC...
I want to make a custom Array object that recieves a number as index, and depending on the value of the index, it would return a computed value. For example: >>> var MyArray(2); >>> MyArray[2]; 4 >>> MyArray.2; 4 I know that for the showed example, I'm better of with a function, but I want to know if I can override the properties/ind...
Hello all, This is mainly a performance questions. I have a master list of all users existing in a String array AllUids. I also have a list of all end dated users existing in a String array EndUids. I am working in Java and my goal is to remove any users that exist in the end dated array from the master list AllUids. I know PHP has a f...
Hi, My problem is as follows: I'm making a ranking board for my team. I've managed to get the data out of the database and I put it into a two-dimensional array. I sent it as model data to the view. Now I don't know how to loop through the two-dimensional array. Normally it would be something like this: For Each record in Model ... ...
I am creating a bunch of objects in an array. I'm used to doing this iteratively, like for(i:int; i < number; i++){ ball= new Ball; balls.push(ball); } and then later I can make reference to balls[i]. Now however I'm creating the objects with mouse click, not with a for loop, so I don't have that [i], so my other code makes refe...
I have a function that works great in Actionscript 2, except it can only replace one character. I need it to behave more like str_replace in PHP and replace an array of characters. Here is the code I have now, it simply replaces a space ( ) with a hyphen (-) in a String. function str_replace(str){ return str.split(" ").join("-"); }...
Hello I have an array which for arguments sake looks something like this: a = [[1,100], [2,200], [3,300], [2,300]] Of those four sub-arrays, I would like to merge any where the first element is a duplicate. So in the example above I would like to merge the 2nd and the 4th sub-arrays. However, the caveat is that where the second eleme...
For arrays and lists in Python and Numpy are the following lines equivalent: itemlist = [] for j in range(len(myarray)): item = myarray[j] itemlist.append(item) and: itemlist = [] for item in myarray: itemlist.append(item) I'm interested in the order of itemlist. In a few examples that I have tried they are identical, b...
Hi all, I have a mysql query which spits out the following: Array ( [0] => stdClass Object ( [bid] => 18 [name] => Cafe Domingo [imageurl] => sp_domingo.gif [clickurl] => # ) [1] => stdClass Object ( [bid] => 19 [name] => Industrial ...
I posted a question yesterday dealing with parsing json data. In one of the follow up answers someone said I was taking a performance hit by using the jQuery append() function within each iteration, while using each(). I was doing: $.getJSON("http://myurl.com/json?callback=?", function(data) { // loop through each post ...
i try to put 8 byte character into the equation causing a lot of error,what i'm supposed to do to make sure the equation can take the static value and produce output in the 8 bytes. #include <math.h> #include <hidef.h> /* for EnableInterrupts macro */ #include "derivative.h" /* include peripheral declarations */ void voltage_measure...
So the idea is to sort a large STRUCTURE using an element of that structure, for arguments sake Zip Code. To keep it simple lets pretend that there are two arrays, one integer containing the zip codes and two, a larger structure (3k Bytes) array. Sorting the integer array is suitably fast with Quick Sort, but tagging the Structure arr...
You have a structure that takes a byte array byte[] however, the size of that array depends on the image you are submitting (widthxheight) So... how do you do [MarshalAs(UnmanagedType.ByValArray, SizeConst = ???)] public Byte[] ImageData; Is the sizeconst a MUST HAVE when working with byte arrays being passed from C# to C dlls? ...
I'm trying to write a model containing digital organisms. Within the model i'd liek the environment to be a fixed 2-d array, but each cell needs to contain a list of the organisms in it. I tried using a jagged array, but as the number of occupied elements varies quite a bit throughout the programm run, i need to use something more flexib...
Hello, I've been going through Sun Microsystem's Java Tutorial and got some questions while reading the following: I/O from the Command Line: The Console Object "Second, readPassword returns a character array, not a String, so the password can be overwritten, removing it from memory as soon as it is no longer needed." My questions ar...
How do you initialize an array in C#? ...
I have some custom type: [RdfSerializable] public class Item { [RdfProperty(true)] public string Name { get; set; } } and some other type that has array of Item: [RdfSerializable] public class Container { // ... some code // if this attribute is missing, then this property will not be exported as array [Car...
Okay, so I'm working on an OpenGL ES application for the iPhone, and I ran into an interesting issue. I have a function that computes the vertices, normals, and texture coordinates of a sphere dependent upon a detail level and a range of spherical coordinates. Originally, storing a vertex in an array looked something like this: //Afte...
In C, is there a difference in time and space between an m x n 2-dimensional array vs a 1-dimensional array of length mxn (for large values of m and n)? Will accessing elements be faster with a 1-dimensional array? ...