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  • Erlang bit syntax variable issue

    - by Jimmy Ruska
    Is there any way to format this so it's a valid expression, without adding another step? <<One:8,_:(One*8)>> = <<1,9>>. * 1: illegal bit size These work <<One:8,_:(1*8)>> = <<1,9>>. <<1,9>> <<Eight:8,_:Eight>> = <<8,9>>. <<8,9>> I'm trying to parse a binary with nested data with list comprehensions instead of stacking accumulators.

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  • How to modify complex argument strings in Perl

    - by mmccoo
    I have a cmdline that I'm trying to modify to remove some of the arguments. What makes this complex is that I can have nested arguments. Say that I have this: $cmdline = "-a -xyz -a- -b -xyz -b- -a -xyz -a-" I have three different -xyz flags that are to be interpreted in two different contexts. One is the -a context and the other is the -b context. I want to remove the "a" -xyz's but leave the ones in the "b" -xyz. How can I most effectively do this in Perl?

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  • A 3-D grid of regularly spaced points

    - by Jack
    I want to create a list containing the 3-D coords of a grid of regularly spaced points, each as a 3-element tuple. I'm looking for advice on the most efficient way to do this. In C++ for instance, I simply loop over three nested loops, one for each coordinate. In Matlab, I would probably use the meshgrid function (which would do it in one command). I've read about meshgrid and mgrid in Python, and I've also read that using numpy's broadcasting rules is more efficient. It seems to me that using the zip function in combination with the numpy broadcast rules might be the most efficient way, but zip doesn't seem to be overloaded in numpy.

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  • Creating a file/folder structure and zipping it up?

    - by makeee
    I have a directory of image files and I need a php script or shell script that will rename them, create a structure of nested directories, and then insert each image into a specified place in the directory hierarchy. Ideally I would just specify a parent directory for each file and a parent directory for each directory and it would build it. And then finally, I need the script to zip up the whole thing. There's probably not an existing php class that will do all this for me, but if anyone knows of a php class or other script available online that would handle a lot of this logic that would be great.

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  • MySQL is there a Single Select to Query Various Unrelated Values from a database?

    - by zzapper
    I saw somewhere what seemed to be nested selects, one "master" select on the "outside" and a series of selects inside- is this possible? I'm not talking about joins as there is particular relation between the selects. I seem not to be explaining myself very well. I want to do a single query which will pull out a series of stats from various tables latest order, latest customer, largest order. Obviously I can do that with a series of selects. The example I saw was something like select ( select ... from tbl_1 where .., select ... from tbl_2 where .., select ... from tbl_3 where .., ... )

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  • Praw (Redditt API) How to retrieve replies to a comment past 10 levels deep

    - by jpreed00
    Ok, so I've written some code that, for all intents and purposes, should work: def checkComments(comments): for comment in comments: print comment.body checkComments(comment.replies) def processSub(sub): sub.replace_more_comments(limit=None, threshold=0) checkComments(sub.comments) #login and subreddit init stuff here subs = mysubreddit.get_hot(limit=50) for sub in subs: processSub(sub) However, given a submission that has 50 nested replies like so: root comment -> 1st reply -> 2nd reply -> 3rd reply ... -> 50th reply The above code only prints: root comment 1st reply 2nd reply 3rd reply 4th reply 5th reply 6th reply 7th reply 8th reply 9th reply Any idea how I can get the remaining 41 levels of replies? Or is this a praw limitation?

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  • Database schema last updated date.

    - by pencilslate
    How to find out the last date and timestamp of schema updation in SQL Server database. I could locate the database created and last back up date from properties. But, couldn't find the last schema updated date. Is there a way to find this out?

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  • google calendar api (java) authentication error in dynamic web project

    - by HazProblem
    org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: com/google/gdata/util/AuthenticationException org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:823) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) javax.servlet.http.HttpServlet.service(HttpServlet.java:641) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) The class i have written works fine as a normal java application, but when i try to use the code in an dynamic web project i get this authentication failure. Where´s the difference?

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  • Encapsulating a Windows.Forms.Button

    - by devoured elysium
    I want to define a special kind of button that only allows two possible labels: "ON" and "OFF". I decided to inherit from a Windows.Forms.Button to implement this but now I don't know I how should enforce this rule. Should I just override the Text property like this? public override string Text { set { throw new InvalidOperationException("Invalid operation on StartStopButton!"); } } The problem I see with this is that I am breaking the contract that all buttons should have. If any code tries something like foreach (Button button in myForm) { button.Text = "123"; } they will get an Exception if I have any of my special buttons on the form, which is something that isn't expectable. First, because people think of properties just as "public" variables, not methods, second, because they are used to using and setting whatever they want to buttons without having to worry with Exceptions. Should I instead just make the set property do nothing? That could also lead to awkward results: myButton.Text = "abc"; MessageBox.Show(abc); //not "abc"! The general idea from the OO world is to in this kind of cases use Composition instead of inheritance. public class MySpecialButton : <Some class from System.Windows.Forms that already knows how to draw itself on forms> private Button button = new Button(); //I'd just draw this button on this class //and I'd then only show the fields I consider //relevant to the outside world. ... } But to make the Button "live" on a form it must inherit from some special class. I've looked on Control, but it seems to already have the Text property defined. I guess the ideal situation would be to inherit from some kind of class that wouldn't even have the Text property defined, but that'd have position, size, etc properties available. Upper in the hierarchy, after Control, we have Component, but that looks like a really raw class. Any clue about how to achieve this? I know this was a long post :( Thanks

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  • User Control access from code behind problem.

    - by BillTetrault
    I have a user control called adminMenu and I use it in my index.aspx and all is fine, but I need to access a MenuItem in adminMenu and need to change NavigateUrl on the MenuItem. Tried this code with no luck: MenuItem MaintenanceReports = this.adminMenu.FindItem("MaintenanceReports"); Not sure if I should be accessing adminMenu properties from controls code behind, but when I try from controls code behind was not able to access it either, any ideas would be appreciated.

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  • Rails - How to secure foreign keys and still allow association selection

    - by Bryce
    For simplicity, assume that I have a simple has-many-through relationship class User < ActiveRecord::Base has_many :courses, :through => :registrations end class Registration < ActiveRecord::Base belongs_to :user belongs_to :course end class Course < ActiveRecord::Base has_many :users, :through => :registrations end I want to keep my app secure, so I use attr_accessible to whitelist my attributes. My question is twofold: How would I set up my whitelist attributes such that I could create a new Registration object through a form (passing in :user and :course, but not risk allowing those foreign keys to be maliciously updated later? How would I set up my validations such that both belongs_to associations are required BUT also allow for Registration objects to be created in nested forms?

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  • How To Read C# Code From Java Background

    - by ChloeRadshaw
    I come from a Java background and have been using C# for the last year - So far the API docs I use are at MSDN (http://msdn.microsoft.com/en-us/library/ms132397.aspx). I tend to use the lightweight C# docs. What annoys me about that is that I don't see one page with details of the class, a list of members, a list of methods and properties like I would with a Java API definition. Is this possible?

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  • Spring internalisation

    - by annnuu
    English properties file can be read bt when i click on french link it couldnt read.Can u tell me the stepwise process to do this.I hav images which need to be in french when i click in french..

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  • is there a way to inject privileged methods after an object is constructed?

    - by patrickgamer
    I'm trying to write fully automated unit tests in JavaScript and I'm looking for a way to read some private variables in various JS functions. I thought I recalled a way to inject privileged members into a function/object (and found an overwhelming occurrence of "no such thing as private in JS") and yet I can't find any resources indicating how. I'm trying to read through the properties of .prototype but if there's a way, someone out here would know where to direct me faster than I'd find on my own. Thanks

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  • Gridview paging and sorting do not work after changing datasource in codebehind??

    - by mkafkas
    I am having a gridview with an object datasource binded in the markup(aspx page). When page loads it directly works fine with all sorting and paging properties. However, i need to filter display on gridview so i have to change the datasource of the gridview on the code behind. It works fine.. i mean the filtering and displaying is good but paging and sorting doesnt work. Did you have a problem something like this?

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  • AS3: How to get all XML-Nodes with a special attribute? (With sourch)

    - by insnet
    Hi there The Challenge: i d like to collect all nodes with the attribute "id". The Problem: The code doenst work with nested nodes. <?xml version="1.0" encoding="utf-8"?><contentmap><fonts id="fonts"> fonts/Arial.swf swf/library_main.swf private function onXMLLoader(event : Event) : void { _xml = _loader.getXML(event.target.url.url); var searchTerms : XMLList = _xml.*.(hasOwnProperty('@id')); if (searchTerms.length() 0 ) { _NodeArray = new Array(); _parseNode(searchTerms); } private function _parseNode(xml : XMLList) : void { for each (var node: XML in xml) { if(!node.hasSimpleContent()) { _parseNode(node.children()); } else { var nodeObject : Object = new Object(); nodeObject['value'] = node.text(); for each(var a:XML in node.@*) { var name : String = String(a.name()); nodeObject[name] = a.toXMLString(); } _NodeArray.push(nodeObject); } } }

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  • Mapping C structure to an XML element

    - by EFraim
    Suppose I have a structure in C or C++, such as: struct ConfigurableElement { int ID; char* strName; long prop1; long prop2; ... }; I would like to load/save it to/from the following XML element: <ConfigurableElement ID="1" strName="namedElem" prop1="2" prop2="3" ... /> Such a mapping can be trivially done in Java/C# or any other language with run-time reflection for the matter. Can it be done in any non-tedious way in C++ with macros/template trickery? Bonus points for handling nested structures/unions.

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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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  • troubles creating a List of doubles from a list of objects

    - by Michel
    Hi, i have a list with objects. The object has a property 'Sales' which is a string. Now i want to create a list of doubles with the values of all objects' 'Sales' properties. I tried this: var tmp = from n in e.Result select new{ Convert.ToDouble ( n.Sales) }; but this gives me this error: Error 106 Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.

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  • SQL to get rows (not groups) that match an aggregate

    - by xulochavez
    Given table USER (name, city, age), what's the best way to get the user details of oldest user per city? I have seen the following example SQL used in Oracle which I think it works select name, city, age from USER, (select city as maxCity, max(age) as maxAge from USER group by city) where city=maxCity and age=maxAge So in essence: use a nested query to select the grouping key and aggregate for it, then use it as another table in the main query and join with the grouping key and the aggregate value for each key. Is this the standard SQL way of doing it? Is it any quicker than using a temporary table, or is in fact using a temporary table interanlly anyway?

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  • Changing Form Size in VS 2008

    - by Dcurvez
    good morning all :) was wondering if anyone can tell me how come I cant get my windows form size to go to 1280x 768 in vs 2008? My resolution that I am working on is 1024x768..but the computer that I am going to be running this program on is a wide screen..1280x768. I try to change it in properties but it keeps defaulting back to 1036x760.

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