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• Exclude some ids from result in Rails ActiveRecord

  - by Beer Brother

  I have following statement for query articles from some sections Article.all(:joins => :sections, :conditions => { :sections =>{ :id => [3, 4, 6, 7, 8, 9] }, :id_not_in => @some_ids }, :limit => 4) Variable @some_ids is array with ids of articles wich must be excluded from result.

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• typedef and operator overloading in C

  - by jocapco

  Suppose I typedef an integer or integer array or any known type: typedef int int2 Then I overload operator * for int2 pairs, now if I initialize variables a and b as int. Then will my * between a and b be the overloaded * ? How do I achieve overloading an int and yet also use * for int the way they are. Should I create a new type?

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• printing from multidimentional arrays?

  - by george

  i have a multi array that looks like this. $_SESSION['cartItems']['quantity'] how do i print out its values? print_r wont work. unless i sessions dont work with multi arrays?

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• Java interface 'interview'-style problem

  - by Codenotguru

  Problem/Task: Write an interface with one method and two classes that implement this interface. Now write a main method with an array that holds an instance of each class. Using a for-each loop, invoke the method upon each item. Is this an interview question? (I'm not sure if the author meant to post this as a question or was looking for an answer to the above.)

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• Read multiple lines from InputStreamReader (JAVA)

  - by eriks

  I have an InputStreamReader object. I want to read multiple lines into a buffer/array using one function call (without crating a mass of string objects). Is there a simple way to do so?

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• javascript - query object graph?

  - by Scott

  Given an object like this: var obj = { first:{ second:{ third:'hi there' } } }; And a key like this "first.second.third" How can I get the value of the nested object "hi there"? I think maybe the Array.reduce function could help, but not sure.

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• How to check whether an object has a specific method or not

  - by Ghommey

  Hey, I want to use a method of an object. Like $myObject->helloWorld(). However there are a couple of methods so I loop through an array of method names and call the method like this: my $methodName ="helloWorld"; $myObject->$methodNames; This works quite nice but some objects don't have all methods. How can I tell whether $myObject has a method called helloWorld or not?

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• BITMAPFILEHEADER equivalent in c/c++?

  - by Fredrick

  What is the equavalent of the code below in c/C++? ref BITMAPFILEHEADER bmfh = ref buffer[offset]; //Where buffer is a byte[] array

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• BITMAPFILEHEADER equivalent in c/c++?

  - by Fredrick

  What is the equivalent of the code below in c/C++? ref BITMAPFILEHEADER bmfh = ref buffer[offset]; //Where buffer is a byte[] array

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• Separate string by tab characters

  - by Jimmy

  I have a text file that is tab-delimited. How can I separate this string into substrings for an array by detecting the tabs?

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• vba - excel : arrays

  - by every_answer_gets_a_point

  how do i dim an integer array with 30,000 elements? and then how do i reference them? array1(123) = integer ??

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• Comparing arrays with sql

  - by Nissim

  I want to perform a 'SELECT' statement with a byte array (binary) parameter as a condition. I tried to google it, but didn't find anything useful. In general, I keep information of files in the database. one of the properties is the file's hash (binary). I want to give a hash to the SELECT statement, and get all rows with the same hash value.

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• Ttrigger extra paramter

  - by fire

  According to the jQuery manual you can send extra parameters (as an array) when calling a trigger. I am using this at the moment: $('#page0').trigger('click', [true]); How would I pick up whether the paramter has come through or not when using this? $('ul.pages li a').click(function() { // Do stuff if true has been passed as an extra parameter });

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• ActionScript 3 - access variables in main application class from instantiated class

  - by Herter

  I have a initApp.as which instantiates a class which needs to access the "currentState" property and the States array as well. However we cannot get this to work as we cannot see how we can access this information. Within initApp.as currentState is accessed via "this.currentState". This does not work in the class which is instatiated within initApp.as. The following error is thrown: "Access of undefined property currentState." Anyone know how this can be solved?

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• Take a string to a byte[]

  - by Vaccano

  I have a string in my database that represents an image. It looks like this: 0x89504E470D0A1A0A0000000D49484452000000F00000014008020000000D8A66040.... <truncated for brevity> When I load it in from the database it comes in as a byte[]. How can I convert the string value to a byte array myself. (I am trying to remove the db for some testing code.)

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• ArrayList<String> to CharSequence[]

  - by Laimoncijus

  What would be the easiest way to make a CharSequence[] out of ArrayList<String>? Sure I could iterate through every ArrayList item and copy to CharSequence array, but maybe there is better/faster way?

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• Please help me for this program of parenthesis and operation balanced

  - by muhammadlodhi

  I have equation like ((3+4)-(24/5)) if user press '.' then equation ends now chk paranthesis are balance or not then solve the internal all operations what should i do? and how will this program make?? help me plz thanks alott...use array and if the parehthesis are balanced then operation must perform plz urgent help thanks alott

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• Does GCC have a built-in compile time assert?

  - by VladLosev

  Our existing compile-time assert implementation is based on negative array index, and it provides poor diagnostic output on GCC. C++0x's static_assert is a very nice feature, and the diagnostic output it provides is much better. I know GCC has already implemented some C++0x features. Does anyone know if static_assert is among them and if it is then since what GCC version?

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• How to get a random value from 1~N but excluding several specific values in PHP?

  - by Runner

  rand(1,N) but excluding array(a,b,c,..), is there already a built-in function that I don't know or do I have to implement it myself(how?) ?

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• Index of arrays and strings in c++

  - by anurag18294

  I want to know from where the index of a string and an array starts from. I am getting a lot of confusion while making programs. While calculating string length of a string is the null character also counted.

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• Third smallest number in matrices and its addition

  - by Heigan

  Hi, How can i addition one + one matric (array data structure) and after it find the third smallest number in it in C language (not C++)? Thank you for the code.

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• Assign debug_backtrace() To a variable in PHP

  - by streetparade

  I tryed to email me debug_backtrace() but it just prints out the array. I need to assign it to a variable so that var_export can work with it. How can i do that?

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• prefill a std::vector at initialization?

  - by user146780

  I want to create a vector of vector of a vector of double and want it to already have (32,32,16) elements, without manually pushing all of these back. Is there a way to do it during initialization? (I dont care what value gets pushed) Thanks I want a 3 dimensional array, first dimension has 32, second dimension has 32 and third dimension has 16 elements

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• MySQL, how to use returned data?

  - by aejo

  Well, I know there is a funciton mysql_fetch_array() and we can use it like this: while ($row = mysql_fetch_array($result)) { echo $row['name'] . "<br />"; } But is there any other way? For example, if there is only one element that can be returned, and not an array. Thanks)

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• Ruby equivalent to .NET's Encoding.ASCII.GetString(byte[])

  - by flyerhzm

  Does Ruby have an equivalent to .NET's Encoding.ASCII.GetString(byte[])? Encoding.ASCII.GetString(bytes[]) takes an array of bytes and returns a string after decoding the bytes using the ASCII encoding.

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