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  • How to iterate on boost::mutable_queue

    - by Tristram Gräbener
    Hello, I need a priority queue where I can increase or decrease the priority key. So boost::mutable_queue seemed perfect despite the lack of documentation. The problem is that I need to iterate at some point over all the elements in the queue. How can I do that? Or is there an othe data structure that would work (preferably in boost)?

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  • RichTextBox specific colors per few charicters / lines C#

    - by Xavier
    i have say, richTextBox1, and here is the contents: line one from my textbox is this, and i want this to be normal, arial, 8 point non-bold font line two, i want everything after the | to be bolded... | this is bold line three: everything in brackets i (want) to be the color (Red) line 4 is "this line is going to be /slanted/ or with italics and so on, basically if i know how to do what i mentioned above, ill know everything i need to know to complete my project. code examples would be very very much appricaited! :)

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  • Save list of CGPoints using NSUserDefaults

    - by Chris Daviduik
    I have a bunch of CGPoints from a CCTMXLayer I want to save to NSUserDefaults but cannot seem to figure out an elegant way of doing so. Originally I was hoping to save an NSDictionary with an NSMutableSet for a value containing several NSValues (valueWithCGPoint). From what I can tell neither NSMutableSet or NSValue is supported by NSUserDefaults. At this point I am considering saving the x&y values of the CGPoint as a string and just converting it back and forth as needed.

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  • Eclipse autocomplete not working in some Java files

    - by m_a_khan
    Hi, I have noticed that autocomplete is not working in some of java files in Eclipse. Also, the files where autocomplete is not working, display a hollow "J" as the icon for the Java file. The files where autocomplete is working, icon for java file is a filled "J" I am wondering if someone can point out what went wrong all of suddent, why the change in icons and why autocomplete and syntax highlighting is turned-off in the files with a hollow "J" icon? Thanks.

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  • Centering fonts in VB6

    - by James Musser
    How do you determine the length of a string of text in Arial Bold font, and then center it in VB6? If not here, can you point me in a direction where I might be able to find this information? We're not using a "label" or "picture box" do print the text to the screen. We are sizing the text on the fly, and allowing the user to scale the size of our application to their liking. We write the text to screen using code.

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  • Hadoop write directory

    - by FaultyJuggler
    Simple question but reading through documentation and configuration I can't quite seem to figure it out. How do I A) know where hadoop is writing to on the local disk and B) change that For initial testing I setup HDFS on a 20gb linux VM - to it we've added a 500gb networked drive for moving towards prototyping the full system. So now how do I point HDFS at that drive, or do I simply move the home directory/install with some slight change in setup and restart the process?

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  • Is an editable select box the right way?

    - by Neil Middleton
    I have a scenario where a user is emailing another user in an HTML based web app. For the To: field, the user may select one of a pre-defined list of emails OR enter their own ignoring the pre-defined options. What would be the best way of doing this from a UI point of view? I've looked at editable select boxes using jQuery but none seem to let you enter your own option. Is there some other UI mechanism that would work here?

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  • How do I parse an HTML website using Perl?

    - by Nano HE
    Could you please give me some suggestions on how to parse HTML in Perl? I plan to parse the keywords(including URL links) and save them to a MySQL database. I am using Windows XP. Also, do I first need to download some website pages to the local hard drive with some offline Explorer tool? If I do, could you point me to a good download tool?

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  • how to start learning JavaScript

    - by antriksh
    Dear All, I am experienced in the technical support like Linux, oracle, sunos etc and but if i say scripting i know little bit of bash. Now i promoted to manage technical engineers including some JavaScript developers, so i want to learn JavaScripting so that i can understand engineers. Hope you understand. Can you please advise me how can i start JavaScripting and point me to some simple docs and examples.

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  • How can I represent a line of music notes in a way that allows fast insertion at any index?

    - by chairbender
    For "fun", and to learn functional programming, I'm developing a program in Clojure that does algorithmic composition using ideas from this theory of music called "Westergaardian Theory". It generates lines of music (where a line is just a single staff consisting of a sequence of notes, each with pitches and durations). It basically works like this: Start with a line consisting of three notes (the specifics of how these are chosen are not important). Randomly perform one of several "operations" on this line. The operation picks randomly from all pairs of adjacent notes that meet a certain criteria (for each pair, the criteria only depends on the pair and is independent of the other notes in the line). It inserts 1 or several notes (depending on the operation) between the chosen pair. Each operation has its own unique criteria. Continue randomly performing these operations on the line until the line is the desired length. The issue I've run into is that my implementation of this is quite slow, and I suspect it could be made faster. I'm new to Clojure and functional programming in general (though I'm experienced with OO), so I'm hoping someone with more experience can point out if I'm not thinking in a functional paradigm or missing out on some FP technique. My current implementation is that each line is a vector containing maps. Each map has a :note and a :dur. :note's value is a keyword representing a musical note like :A4 or :C#3. :dur's value is a fraction, representing the duration of the note (1 is a whole note, 1/4 is a quarter note, etc...). So, for example, a line representing the C major scale starting on C3 would look like this: [ {:note :C3 :dur 1} {:note :D3 :dur 1} {:note :E3 :dur 1} {:note :F3 :dur 1} {:note :G3 :dur 1} {:note :A4 :dur 1} {:note :B4 :dur 1} ] This is a problematic representation because there's not really a quick way to insert into an arbitrary index of a vector. But insertion is the most frequently performed operation on these lines. My current terrible function for inserting notes into a line basically splits the vector using subvec at the point of insertion, uses conj to join the first part + notes + last part, then uses flatten and vec to make them all be in a one-dimensional vector. For example if I want to insert C3 and D3 into the the C major scale at index 3 (where the F3 is), it would do this (I'll use the note name in place of the :note and :dur maps): (conj [C3 D3 E3] [C3 D3] [F3 G3 A4 B4]), which creates [C3 D3 E3 [C3 D3] [F3 G3 A4 B4]] (vec (flatten previous-vector)) which gives [C3 D3 E3 C3 D3 F3 G3 A4 B4] The run time of that is O(n), AFAIK. I'm looking for a way to make this insertion faster. I've searched for information on Clojure data structures that have fast insertion but haven't found anything that would work. I found "finger trees" but they only allow fast insertion at the start or end of the list. Edit: I split this into two questions. The other part is here.

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  • Is it OK to write a constructor which does nothing?

    - by Roman
    To use methods of a class I need to instantiate a class. At the moment the class has not constructor (so I want to write it). But than I have realized that the constructor should do nothing (I do need to specify values of fields). In this context I have a question if it is OK to write constructor which does nothing. For example: public Point() { }

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  • One Account with many users authentication in rails

    - by Cristian
    Which approach would you recommend to the following issue: My app needs to have an account with several users inputting tasks on the same account. Only one of the users (the one that opened the account) will have admin privileges. Im thinking on using Authlogic for authentication and CanCan for determining user privileges. The point is that I'd like the User that opened the Account to be admin by default being him the only one to be able to generate other Users for his account with a different privileges. Thanks, CD

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  • C++ strcpy(Struct.Property, "VALUE") Use in C#?

    - by gtas
    Hi all, i created a Wrapper for a C++ dll. While reading the documentation i reached to a point using this function strcpy(StructName.strPropGetter, "A STRING"); I'm not kinda C++ guy, i can't figure how to transfer this code in C#. My wrapper gave me this property without a setter. Any light would be nice. Thank you

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  • What is the proper way to wrap this php loop around the javascript

    - by zac
    Hi, I am mashing together the Google Maps 2 script with a Wordpress loop so there is a CMS platform for the map data. I have this working fine : var point = new GLatLng(48.5139,-123.150531); var marker = createMarker(point,"Lime Kiln State Park", '<?php $post_id = 182; $my_post = get_post($post_id); $mapTitle = $my_post->post_title; $mapIMG = get_post_meta($post_id, 'mapImage', true); $snip = get_post_meta($post_id, 'mapExcerpt', true); echo "<div class=\"span-12\">"; echo "<div class=\"mapTitle\">"; echo $mapTitle; echo "</div>"; echo "<img class=\"mapImage\" src=\""; echo bloginfo('url'); echo "/wp-content/files_mf/"; echo $mapIMG; echo "\" /> "; echo "<div class=\"mapContent\">"; echo $snip; echo "</div>"; echo "<div class=\"moreLink\">"; echo "<a href=\""; echo $permalink = get_permalink( $post_id ); echo "\">Find out more &raquo; </a>"; echo "</div>"; echo "</div>"; ?>') map.addOverlay(marker); However I am hoping to also be able to include the two variables at the start within the php loop so that both of those can also be generated by custom fields. Can someone please show me that the proper way to write this would be so that all of the data can be pulled in from fields within that post id? So the lat/long and title could also be set from within the post 182 fields.

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  • Does an XML schema or DTD exist for PerformancePoint's Xml Metadata?

    - by Athens
    I wrote several XQuery statements to shred existing KPI and Dashboard metadata but I would like to validate my queries by reviewing the corresponding Xml Schema or DTD if it exists. I searched online but could not find what i was looking for. The metadata is stored in Performance Point's back end Sql Server database in the dbo.FCObjects table's SerializedXml column.

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  • How do I use File.new to find a file from Rails?

    - by Angela
    I am trying to read a file that has been saved on the /system folder using Paperclip, for example. But when I use that .url method from Paperclip to read that file using File.new, I get that the file isn't found. The directory is correct, but I still can't access it. What is the right way to find a file for File.new for example? I tried to point to other files, as well, and to no avail.

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  • How can I link axes of imshow plots for zooming and panning?

    - by Adam Fraser
    Suppose I have a figure canvas with 3 plots... 2 are images of the same dimensions plotted with imshow, and the other is some other kind of subplot. I'd like to be able to link the x and y axes of the imshow plots so that when I zoom in one (using the zoom tool provided by the NavigationToolbar), the other zooms to the same coordinates, and when I pan in one, the other pans as well. Subplot methods such as scatter and histogram can be passed kwargs specifying an axes for sharex and sharey, but imshow has no such configuration. I started hacking my way around this by subclassing NavigationToolbar2WxAgg (shown below)... but there are several problems here. 1) This will link the axes of all plots in a canvas since all I've done is get rid of the checks for a.in_axes() 2) This worked well for panning, but zooming caused all subplots to zoom from the same global point, rather than from the same point in each of their respective axes. Can anyone suggest a workaround? Much thanks! -Adam from matplotlib.backends.backend_wxagg import NavigationToolbar2WxAgg class MyNavToolbar(NavigationToolbar2WxAgg): def __init__(self, canvas, cpfig): NavigationToolbar2WxAgg.__init__(self, canvas) # overrided # As mentioned in the code below, the only difference here from overridden # method is that this one doesn't check a.in_axes(event) when deciding which # axes to start the pan in... def press_pan(self, event): 'the press mouse button in pan/zoom mode callback' if event.button == 1: self._button_pressed=1 elif event.button == 3: self._button_pressed=3 else: self._button_pressed=None return x, y = event.x, event.y # push the current view to define home if stack is empty if self._views.empty(): self.push_current() self._xypress=[] for i, a in enumerate(self.canvas.figure.get_axes()): # only difference from overridden method is that this one doesn't # check a.in_axes(event) if x is not None and y is not None and a.get_navigate(): a.start_pan(x, y, event.button) self._xypress.append((a, i)) self.canvas.mpl_disconnect(self._idDrag) self._idDrag=self.canvas.mpl_connect('motion_notify_event', self.drag_pan) # overrided def press_zoom(self, event): 'the press mouse button in zoom to rect mode callback' if event.button == 1: self._button_pressed=1 elif event.button == 3: self._button_pressed=3 else: self._button_pressed=None return x, y = event.x, event.y # push the current view to define home if stack is empty if self._views.empty(): self.push_current() self._xypress=[] for i, a in enumerate(self.canvas.figure.get_axes()): # only difference from overridden method is that this one doesn't # check a.in_axes(event) if x is not None and y is not None and a.get_navigate() and a.can_zoom(): self._xypress.append(( x, y, a, i, a.viewLim.frozen(), a.transData.frozen())) self.press(event)

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