I want to create 10 buttons using an array. How to create it? I am using array = [[[NSArray alloc] initWithObjects:button1, button2] retain]; But It tells Missing Sentinel in Function Call. Where, I am wrong? ...
I have something like this in my code: template <typename T> struct A { void Print(); }; template <> struct A<char*> { void Print() { printf("Char*!\n"); } }; template <typename T> void DoSomething(T& lol) { A<T> a; a.Print(); } int main() { char a[5]; DoSomething(a); } And this produces the following linker error: err...
Hi, I made an object that actually represents an array of 8 booleans stored in a char. I made it to learn something more about bitwise operators and about creating your own objects in C. So I've got two questions: Can I be certain if the below code always works? Is this a good implementation to make an object that can't get lost in C, ...
For example, in the input array [0,1,4,6,8,9,12] the largest set of successively evenly spaced numbers is {0,4,8,12} and the next largest that isn't a subset of the largest is {4,6,8}. ...
I have found that reading 64 contiguous memory locations (elements) using modbus is the most efficient way of retrieving information over Modbus using the rmodbus library. My goal is to log the read information in a simple database that can be mined to generate graphs and tables of data on a webpage and store the most current value in ...
Assuming we have: array1 = ['A', 'B', 'C', 'D', 'E']; array2 = ['C', 'E']; Is there a proven and fast solution to compare two arrays against each other, returning one array without the values appearing in both arrays (C and E here). So: array3 = ['A', 'B', 'D'] should be the output of the solution. (jquery may be involved) thx. ...
I just realize that maybe I was mistaken all the time in exposing T[] to my views, instead of IEnumerable<T>. Usually, for this kind of code: foreach (var item in items) {} item should be T[] or IEnumerable<T>? Than, if I need to get the count of the items, would the Array.Count be faster over the IEnumerable<T>.Count()? ...
i want to make a new data structure using arrays for this query it will be like : will start with a query and a code example i want to make a new data structure using arrays for this query it will be like : //this is for the first headline [46] => Array ( [headline_name] => headline 1 [score] => 50 ...
Hi there, I want to speed up an array multiplication in C99. This is the original for loops: for(int i=0;i<n;i++) { for(int j=0;j<m;j++) { total[j]+= w[j][i] * x[i]; } } My boss asked my to try this, but it did not improve the speed: for(int i=0;i<n;i++) { float value = x[i]; for(int...
Hi, I want to do sth. like this: foo=(a b c) foo-=b echo $foo # should output "a c" How can I remove an entry from an array? foo-=b does not work. The removal should work no matter where the entry is. ...
For example, I have a=(1 2 3) and I want to get a=(foo1 foo2 foo3). What would be an easy/clean way to get that? ...
Hi, i need help. c++: static void doIp(byte data[]) { unsigned char j, k; byte val; byte buf[8]; byte *p; byte i = 8; for(i=0; i<8; i++) { val = data[i]; p = &buf[3]; j = 4; do { for(k=0; k<=4; k+=4) { p[k] >>= 1; if(val & 1) p[k] |= 0x80; val >>= 1; } ...
Here's my strategy for choosing which C# collection type to use: if number of items in collection is fixed, then use an array, e.g.: string[] directions = new string[] { "north", "south", "east", "west" }; otherwise always use List<T> unless of course you need a more specialized collection, e.g. Stack<T>, Queue<T>, or Dictionary<TKey,...
I have a homework program that I need a little help on. I need to compare an array containing the answer key of a test to an array containing the student answers. The problem I am running into is that I need to take the blank answers into account. I cannot seem to come up with code that will compare the arrays, then display the score. Th...
I have two arrays of the same length ($search_type, $search_term). I want to remove any duplicates in the sense of there being searches that have the same type and search term (ie $search_type[$a] == $search_type[$b] && $search_term[$a] == $search_term[$b]). I'm aware that I could write this using loops, was wondering if there's a si...
Hi, I'm trying to flatten an array for my form. def update @tour = Tour.find(params[:id]) params[:tour][:hotel_ids][0] = params[:tour][:hotel_ids][0].split(',') ... This results in: "hotel_ids"=>[["1","2"]] Naturally I want it to be "hotel_ids"=>["1","2"] My Form: <%= text_field_tag 'tour[hotel_ids][]', nil %> Hope anyon...
I'm using cakephp and am getting back a "double array" where it is giving me 2 arrays where it should be 1, I have looked into the issue as far as cakephp and can't figure it out and just want to move past this for now so I am wondering if anyone knows how to unset a second array if a variable has 2 arrays.. below is the print_r of the a...
Anyone know what follow code does? the question is about follow operators: & and |,and 0xfc salt[0] = (byte)((salt[0] & 0xfc) | (saltLen & 0x03)); salt[1] = (byte)((salt[1] & 0xf3) | (saltLen & 0x0c)); salt[2] = (byte)((salt[2] & 0xcf) | (saltLen & 0x30)); salt[3] = (byte)((salt[3] & 0x3f) | (saltLen & 0xc0)); ...
I understand that memberwise assignment of arrays is not supported, such that the following will not work: int num1[3] = {1,2,3}; int num2[3]; num2 = num1; // "error: invalid array assignment" I just accepted this as fact, figuring that the aim of the language is to provide an open-ended framework, and let the user decide how to imple...
Given the following code: var tmp = [0]; for(var i=0;i<100;i++) { tmp[0] = i; console.log(tmp); } I'd expect output of [0], [1], [2], [3], etc But I instead get [99], [99], [99], [99], etc Stepping through the code in a debugger (firebug) however nets me the correct result of [0], [1], [2]. ...