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  • How can I know which website the member has visited previously?

    - by Tom
    So, I can use getenv('HTTP_REFERER') to get an URL which the member has visited previously, but it works only if it's the same website. I want this: for example. the member firstly visits google.com then goes to my website. I want to show him, that previously he visited a google.com website. How can I do it if it's possible?

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  • Reboot windows machines at a certain time of day and automatically login with Python

    - by Tom
    I know how to reboot machines remotely, so that's the easy part. However, the complexity of the issue is trying to setup the following. I'd like to control machines on a network for after-hours use such that when users logoff and go home, or shutdown their computers, whatever, python or some combination of python + windows could restart their machines (for cleanliness) and automatically login, running a process for the night, then in the morning, stop said process and restart the machine so the user could easily login like normal. I've looked around, haven't had too terribly much luck, though it looks like one could do it with a changing of the registry. That sounds like a rough idea though, modifying the registry on a per-day basis. Is there an easier way?

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  • Overload the behavior of count() when called on certain objects

    - by Tom
    In PHP 5, you can use magic methods, overload some classes, etc. In C++, you can implement functions that exist is STL as long as the argument types are different. Is there a way to do this in PHP? An example of what I'd like to do is this: class a { function a() { $this->list = array("1", "2"); } } $blah = new a(); count($blah); I would like blah to return 2. IE count the values of a specific array in the class. So in C++, the way I would do this might look like this: int count(a varName) { return count(varName->list); } Basically, I am trying to simplify data calls for a large application so I can call do this: count($object); rather than count($object->list); The list is going to be potentially a list of objects so depending on how it's used, it could be really nasty statement if someone has to do it the current way: count($object->list[0]->list[0]->list); So, can I make something similar to this: function count(a $object) { count($object->list); } I know PHP's count accepts a mixed var, so I don't know if I can override an individual type.

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  • TinyMce plugin, how to copy 'Link' functionality.

    - by Tom
    I'm creating a new plugin for TinyMce. However I cannot find any examples to see some of the functionality I've seen in other plugins. I've read their source code but I cannot find where it is done: When you click on an 'A' element, the link/unlink buttons in the taskbar become enabled. When you right click on an 'A' element, then click on the "Insert/edit link" icon that is shown in the popup menu, the "Insert/edit link" window is setup (has all the attributes for that particular link) prefilled. Could you suggest somewhere where I could learn how to do this? A file and line number is fine. Thanks in advance.

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  • Copying a file with PHP Command

    - by Tom
    Hi, I'm having a problem using the copy function in PHP, what is wrong with it? I get the error; Parse error: syntax error, unexpected T_VARIABLE On the bottom line; $targetDir = 'file.txt'; $targetDir2 = 'file2.txt'; copy($targetDir, $targetDir2); Thanks The entire file is; <?PHP $targetDir = 'file.txt'; $targetDir2 = 'file2.txt'; copy($targetDir, $targetDir2); ?> copy and pasted from the doc.

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  • Nested/Sub data types in haskell

    - by Tom Carstens
    So what would be nice is if you could do something like the following (not necessarily with this format, just the general idea): data Minor = MinorA | MinorB data Major = Minor | MajorB isMinor :: Major -> Bool isMinor Minor = True isMinor _ = False So isMinor MinorA would report True (instead of an error.) At the moment you might do something like: data Major = MinorA | MinorB | MajorB isMinor :: Major -> Bool isMinor MinorA = True isMinor MinorB = True isMinor _ = False It's not terrible or anything, but it doesn't expand nicely (as in if Minor when up to MinorZ this would be terribly clunky). To avoid that problem you can wrap Minor: data Minor = MinorA | MinorB data Major = MajorA Minor | MajorB isMinor :: Major -> Bool isMinor (MajorA _) = True isMinor _ = False But now you have to make sure to wrap your Minors to use them as a Major... again not terrible; just doesn't really express the semantics I'd like very well (i.e. Major can be any Minor or MajorB). The first (legal) example is "Major can be MinorA..." but doesn't have any knowledge of Minor and the second is "Major can be MajorA that takes a Minor..." p.s. No, this isn't really about anything concrete.

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  • What does this Java generics paradigm do and what is it called?

    - by Tom
    I'm looking at some Java classes that have the following form: public abstract class A <E extends A<E>> implements Comparable <E> { public final int compareTo( E other ) { // etc } } public class B extends A <B> { // etc } public class C extends A <C> { // etc } My usage of "Comparable" here is just to illustrate a possible use of the generic parameter "E". Does this usage of generics/inheritance have a name? What is it used for? My impression is that this allows the abstract class to provide a common implementation of a method (such as compareTo) without having to provide it in the subclasses. However, in this example, unlike an inherited method it would restrict subclasses to invoking compareTo on other instances of the same subclass, rather than any "A" subclass. Does this sound right? Anyway, just curious if any gurus out there have seen this before and know what it does. Thanks!

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  • Calculate needed size for a TLabel

    - by Tom
    Ok, here's the problem. I have a label component in a panel. The label is aligned as alClient and has wordwrap enabled. The text can vary from one line to several lines. I would like to re-size the height of the the panel (and the label) to fit all the text. How do I get the necessary height of a label when I know the text and the width of the panel?

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  • DB Strategy for inserting into a high read table (Sql Server)

    - by Tom
    Looking for strategies for a very large table with data maintained for reporting and historical purposes, a very small subset of that data is used in daily operations. Background: We have Visitor and Visits tables which are continuously updated by our consumer facing site. These tables contain information on every visit and visitor, including bots and crawlers, direct traffic that does not result in a conversion, etc. Our back end site allows management of the visitor's (leads) from the front end site. Most of the management occurs on a small subset of our visitors (visitors that become leads). The vast majority of the data in our visitor and visit tables is maintained only for a much smaller subset of user activity (basically reporting type functionality). This is NOT an indexing problem, we have done all we can with indexing and keeping our indexes clean, small, and not fragmented. ps: We do not currently have the budget or expertise for a data warehouse. The problem: We would like the system to be more responsive to our end users when they are querying, for instance, the list of their assigned leads. Currently the query is against a huge data set of mostly irrelevant data. I am pondering a few ideas. One involves new tables and a fairly major re-architecture, I'm not asking for help on that. The other involves creating redundant data, (for instance a Visitor_Archive and a Visitor_Small table) where the larger visitor and visit tables exist for inserts and history/reporting, the smaller visitor1 table would exist for managing leads, sending lead an email, need leads phone number, need my list of leads, etc.. The reason I am reaching out is that I would love opinions on the best way to keep the Visitor_Archive and the Visitor_Small tables in sync... Replication? Can I use replication to replicate only data with a certain column value (FooID = x) Any other strategies?

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  • Protecting from crashes (beyond bounds) with [object objectAtIndex:]

    - by Tom
    Hi! I'd like to know if there's a way to verify if an index exists before getting it. So it'd be way to protect my code against: *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (2) beyond bounds (0)' Like in PHP you can do: isset($object[10]); and it'll return true if it exists. Is there such a method in Objective-C/Cocoa? Thanks!

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  • Detecting modifier keys held down during startup in OS/X (or Windows)?

    - by Tom Swirly
    I've searched here and not found any question that really covers this. I have a cross-platform Windows-OS/X application in which I'd like to be able to detect whether modifier keys like shift or control are being held down while the application starts up. We'd like to do this to allow the application to start up without reading its preferences file, in case that somehow gets corrupted (we saw in testing a prefs bug, now fixed, that made the window size 0 by 0, for example). We're using the excellent and comprehensive cross-platform C++ library named Juce. Unfortunately, Juce's master tells me that he believes this is impossible on OS/X at least since you only get keyboard events and there is no way to read the state of the keys unless something changes. Is this true? Or is there some way around this? I'm almost sure I've used Mac programs that used this mechanism to bypass their preferences. Or... stepping up one level... is there another solution to providing the functionality of "run the program but don't read the prefs file" other than "holding a key down while launching the program"? This is consumer software so we can't expect too much from the user. The final solution will end up being a cross-platform one so hints on the Windows side will also be appreciated. Thanks, and be well! I'll report in with progress on my end.

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  • visualizing enter symbol in java (Serif/SansSerif preferred)

    - by Tom
    How can I display the graphical "enter symbol" within java applet using fonts? I want to show "?", which is U+21B5 DOWNWARDS ARROW WITH CORNER LEFTWARDS. – I want to draw this to applet's screen so that it works in WIN, LINUX, MACOSX, etc. Is there a font available that makes this possible or should I draw it manually somehow? g2d.setFont("SymbolFont??which one"); g2d.drawString(myenterSymbolHere,x,Y);

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  • Floating toolbar on bottom, centered, 80% of current screen width

    - by Tom
    I'm trying to implement a Facebook like toolbar on the bottom of the screen for a website I'm currently working on. Currently, I have it 100% of the width of the screen but I'd like to have it look almost exactly like Facebook's toolbar, centered, bottom justified on top, around 80% of the current screen's width. Here is the current CSS for the toolbar I have that is 100% of the screen's width. Thanks in advance. CSS: <style type="text/css"> #toolbar { background:url('/_assets/img/toolbar.gif') repeat-x; height:25px; position:fixed; bottom:0px; width:100%; left:0px; border-left:1px solid #000000; border-right:1px solid #000000; z-index:100; font-size:0.8em; } </style>

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  • How to train yourself to avoid writing “clever” code?

    - by Dan Abramov
    Do you know that feeling when you just need to show off that new trick with Expressions or generalize three different procedures? This does not have to be on Architecture Astronaut scale and in fact may be helpful but I can't help but notice someone else would implement the same class or package in a more clear, straightforward (and sometimes boring) manner. I noticed I often design programs by oversolving the problem, sometimes deliberately and sometimes out of boredom. In either case, I usually honestly believe my solution is crystal clear and elegant, until I see evidence to the contrary but it's usually too late. There is also a part of me that prefers undocumented assumptions to code duplication, and cleverness to simplicity. What can I do to resist the urge to write “cleverish” code and when should the bell ring that I am Doing It Wrong? The problem is getting even more pushing as I'm now working with a team of experienced developers, and sometimes my attempts at writing smart code seem foolish even to myself after time dispels the illusion of elegance.

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  • Silverlight TV 21: Silverlight 4 - A Customer's Perspective

    Live from the official launch event for Silverlight 4, John talks with a panel of guests who build applications using Silverlight. Franck Jeannin of Ormetis, Ward Bell of IdeaBlade, and Dave Wolf of Cynergy Systems discuss both what they showed in the keynote at DevConnections and their experiences with Silverlight. This is a great discussion of their perspectives on Silverlight and the competitive landscape with Flash and HTML 5 for their respective companies. All 3 of these guests presented during...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Simple ViewModel Locator for MVVM: The Patients Have Left the Asylum

    Ive been toying with some ideas for MVVM lately. Along the way I have been dragging some friends like Glenn Block and Ward Bell along for the ride. Now, normally its not so bad, but when I get an idea in my head to challenge everything I can be interesting to work with :). These guys are great and I highly encourage you all to get your own personal Glenn and Ward bobble head dolls for your home. But back to MVVM Ive been exploring the world of View first again. The idea is simple: the View is created,...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Simple ViewModel Locator for MVVM: The Patients Have Left the Asylum

    Ive been toying with some ideas for MVVM lately. Along the way I have been dragging some friends like Glenn Block and Ward Bell along for the ride. Now, normally its not so bad, but when I get an idea in my head to challenge everything I can be interesting to work with :). These guys are great and I highly encourage you all to get your own personal Glenn and Ward bobble head dolls for your home. But back to MVVM Ive been exploring the world of View first again. The idea is simple: the View is created,...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Star Sightings at MIX 10

    Hey its Vegas baby! Brad was stylin. Tim and I were a poor mans Vin Diesel and Tom Cruise. The jacket and shades actually suited Karen. Dan looked like he worked in Vegas. Ward was, well, Ward. Was it the town, the conference, or are we all just wacky developer/designer types? Ward Bell brought along his jacket, shirt and shades and of course we all just had to get into the act. (If you think this is crazy, wait til you see what Ward did to top it in our upcoming Silverlight TV video!) Yet another...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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