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  • What does this line of code mean?

    - by Victor
    Hi, I am wondering what this line of code mean? b = (gen_rand_uniform()>0.5)?1:0; The gren_rand_uniform() is a function to generate random 0 and 1 numbers. However I don't get the meaning for >0.5 and 1:0. I know this is supposed to be a basic question, please bear with me. Thanks!

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  • Pointing a domain to a subscription based web-app?

    - by jefff
    Hello everyone, I'm about to start building a subscription based website that will function much like 37signals offerings in terms of users paying a monthly fee to use the site. But in my case I would like for them to be able to use their own hosted domain names and have them point to my server. Is this possible? How do i link up the domain name with their account on my server? Thanks a mil!

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  • Loading images using jquery and Ajax

    - by fpz
    I have an image tag that fires a jquery function using ajax, when clicked, to download images from another source to the server. At the same time when the image is clicked it opens up a new tab and tries to load the image that is being downloaded. How can I make the link not open until the image is finished downloading to the server? This is the html <a target="_blank" href="link_to_full_image" \> <img src="link_to_thumbnail" border=0/></a>

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  • SQL: Is there a more efficient way to calculate elapsed hours, minutes, seconds?

    - by hamlin11
    I'm using Computed Columns to provide me with the following information: Hours, Minutes, and Seconds between a Start DateTime and Finish DateTime (Where Minutes and Seconds are between 0 and 59 and Hours can be any value 0 or greater) Computed Column for Seconds: datediff(second,[Start],[Finish]) % 60 Computed Column for Minutes: floor(datediff(second,[Start],[Finish]) / 60.0) % 60 Computed Column for Hours: floor(datediff(second,[Start],[Finish]) / 3600.0) Here's the table for reference Note: I'm also calculating TotalElapsedSeconds, TotalElapsedMinutes, and TotalElapsedHours in other computed columns, but those are easy. I just feel like I might be missing out on a nice built in function in SQL.

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  • IE 7 does not like jquery('<button/>').attr('type','button')

    - by salmane
    I am trying to create a button using jquery. I use the following code jquery('<button/>', {type:'button'}).text(name) However this works in Safari , FF IE8 but not IE7 i tried to use the attr function : jquery('<button/>').attr('type','button').text(name) this does not work either. any ideas what would work? I suppose if I don't assign a type it would default to button but i rather do that thanks for your help

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  • Flex Drag & Drop: Detecting when all data has been moved from source to destination

    - by Adam Tuttle
    I have two mx:TileList controls that I'm using to allow editing of objects in batch. The first contains a collection of all available data, and the 2nd contains the current batch. Both are bound to ArrayCollections, and using the native drag-n-drop functionality of the TileList control the data is moved from one ArrayCollection to the other when an object is dragged between them. I need to change the currentState to show & reset the batch manipulation controls when the batch count goes from 0 to n or n to 0 items. Based on the documentation, I would have thought that I should listen to the dragComplete event, but my testing shows that instead of firing after the data has been removed from the source ArrayCollection and added to the destination ArrayCollection, it fires (consistently) between these two actions. Both lists are similar to this: <mx:TileList id="srcList" dragEnabled="true" dropEnabled="true" dragMoveEnabled="true" dataProvider="{images}" dragComplete="handleDragComplete(event)" allowMultipleSelection="true" /> And here's the source of the handleDragComplete function: private function handleDragComplete(e:DragEvent):void{ trace(e.dragInitiator.name + '.dragComplete: batch.length=' + batch.length.toString()); trace(e.dragInitiator.name + '.dragComplete: images.length=' + images.length.toString()); if (batch.length > 0){ currentState = 'show'; }else{ currentState = ''; } } And lastly, here's some example output from running the code. These are all run one after the other. Case 1: The application loads with 10 objects in the first list and the batch is empty. I dragged 1 object from the source list to the batch list. srcList.dragComplete: batch.length=1 srcList.dragComplete: images.length=10 (Expected: 1,9) Clearly, the object has been added to the batch ArrayCollection but not removed from the source. Case 2: Now, I'll drag a 2nd object into the batch. srcList.dragComplete: batch.length=2 srcList.dragComplete: images.length=9 (Expected: 2,8) Firstly, we can see that images.length has changed, showing that the object that I dragged from the source list to the batch list was removed AFTER the dragComplete event fired. The same thing happens this time: The new object is added to the batch ArrayCollection (batch.length=2), the dragComplete event fires (running these traces), and then the object is removed from the source ArrayCollection. Case 3: Now, I'll drag both images from the batch list back to their original location in the source list. batchList.dragComplete: batch.length=2 batchList.dragComplete: images.length=10 (Expected: 0,10) We can see that batch.length hasn't gone down, but the source images array is back at its original length of 10. QUESTION: Am I doing something wrong? Is there another event I could listen for? (Note: I tried both DragExit and DragDrop, just to be sure, and those behave as expected, but are not what I need.) Or is there another way to get the data that I want? Or... have I found a bug in the SDK?

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  • I need to copy only selected files and folders in PHP

    - by OM The Eternity
    I am using the following code, in which initially i am taking the difference of two folder structure and then the out put needs to be copied to other folder. here is the code below.. $source = '/var/www/html/copy1'; $mirror = '/var/www/html/copy2'; function scan_dir_recursive($dir, $rel = null) { $all_paths = array(); $new_paths = scandir($dir); foreach ($new_paths as $path) { if ($path == '.' || $path == '..') { continue; } if ($rel === null) { $path_with_rel = $path; } else { $path_with_rel = $rel . DIRECTORY_SEPARATOR . $path; } $full_path = $dir . DIRECTORY_SEPARATOR . $path; $all_paths[] = $path_with_rel; if (is_dir($full_path)) { $all_paths = array_merge( $all_paths, scan_dir_recursive($full_path, $path_with_rel) ); } } return $all_paths; } $diff_paths = array_diff( scan_dir_recursive($mirror), scan_dir_recursive($source) ); /*$diff_path = array_diff($mirror,$original);*/ echo "<pre>Difference ";print_r($diff_paths); foreach($diff_paths as $path) { echo $source1 = "var/www/html/copy2/".$path; echo "<br>"; $des = "var/www/html/copy1/".$path; copy_recursive_dirs($source1, $des); } function copy_recursive_dirs($dirsource, $dirdest) { $dir_handle=opendir($dirsource); mkdir($dirdest,0777); while(false!==($file=readdir($dir_handle))) {/*echo "<pre>"; print_r($file);*/ if($file!="." && $file!="..") { if(is_dir($dirsource.DIRECTORY_SEPARATOR.$file)) { //Copy the file at the same level in the destination folder copy_recursive_dirs($dirsource.DIRECTORY_SEPARATOR.$file, $dirdest.DIRECTORY_SEPARATOR.$file); } else{ //Copy the dir at the same lavel in the destination folder copy ($dirsource.DIRECTORY_SEPARATOR.$file, $dirdest.DIRECTORY_SEPARATOR.$file); } } } closedir($dir_handle); return true; } Whenever I execute the script I get the difference output but do not get the other copy on second folder as per code... Pls help me in rectifying...

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  • How to check if service is enabled with launchd

    - by spartygw
    I can't figure out how to check from within C/C++ if a service is enabled via launchd. I know I can use launchctl from the command line and am currently executing ' launchctl list myServiceName ' from fork/exec. I've found that boostrap_look_up() might be the way to check this but I can't find enough documentation to condense this down to a simple example. Can you shed light on this? All I need is a small function to test if my service is actually registered and available.

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  • Show pdf in the browser in asp.net mvc

    - by Pankaj
    I have a tab on my page, when i click on this tab, i need to show a pdf file on page(browser). For this i am writing function on control like this public ActionResult PricedPdf(string projID,string fileName) { byte[] bArr = new byte[] { }; bArr =getdata(); return File(bArr, System.Net.Mime.MediaTypeNames.Application.Pdf, fileName+".pdf"); } Now my problem is when i render this, page only show some unreadable data not pdf.

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  • How can I tell when a MySQL table was last updated?

    - by RaGE
    In the footer of my page, I would like to add something like "last updated the xx/xx/200x"; with this date being the last time a certain mySQL table has been updated. What is the best way to do that ? Is there a function to retrieve the date ? Should I make an access to the database everytime my footer is displayed ?

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  • Best way to registered Event In WPF

    - by Asim Sajjad
    Which is the best way to registered event for example if I wanto to regiested Loaded event for the window or user control , then it is better to registered in the xaml file or in the loaded/initilization function in code behind (C#/VB.net)? Please give explaination of your answer.

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  • How to draw an CGImage with some alpha transparency?

    - by mystify
    Want to draw an UIImageView which has an CGImage, and the UIImageView has alpha 0.5f. But this CGContextDrawImage function doesnt take an transparency value. So how could I draw an image slightly transparent? To be clear: The image itself is not transparent, but I want it to be "dimmed" a little bit. Just like you would do with an UIImageView and some alpha like 0.5f :-)

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  • Exceptions stacktrace

    - by f4
    What's the best way to implement an exception stack trace? I found some kind of a solution using uncaught_exception() but it requires to add some code to every function. I need something working on gcc under linux and windows

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  • Detect the file size of a link's href using JavaScript

    - by noblethrasher
    Hi, Would like to write a script to detect the file size of the target of a link on a web page. Right now I have a function that finds all links to PDF files (i.e. the href ends with '.pdf') and appends the string '[pdf]' to the innerText. I would like to extend it so that I can also append some text advising the user that the target is a large file (e.g. greater than 1MB). Thanks

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  • Javascript: 'this' changes when assigning a property?

    - by Pickels
    I know 'this' can be a problem when you don't understand Javascript well but this one got me a little puzzled. var ControlTypes = { TextBox: function () { console.log(this); this.Name = "TextBox"; console.log(this); } } ControlTypes.TextBox(); Firebug gives the following result: Object {} Object { Name="TextBox"} The first object is ControlTypes and the second one is Textbox. Could anybody explain the behavior behind this?

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  • Qt -how to know whether content in child widgets has been changed?

    - by Narek
    In QMainWindow I have 2 QSplitters. In that splitters I have QTextEdit, QLineEdits, QTableWinget, Ragio buttons and so on... I want to know if somthing has been chaged after pressing File-New menu button. Is there any general method for doing this? Somwhere I have read that it is recomended to use isWindowModified() function of QMainWindow, but seems it doesn't work.

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  • What does assert do?

    - by peiska
    What does assert do? for example in the function? private static int charAt(String s, int d) { assert d >= 0 && d <= s.length(); if (d == s.length()) return -1; return s.charAt(d); }

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  • AS3 validate form fields?

    - by show
    Hi, I wrote a AS3 script, i have 2 fields to validate, i.e email and name. For email i use: function isValidEmail(Email:String):Boolean { var emailExpression:RegExp = /^[a-z][\w.-]+@\w[\w.-]+.[\w.-]*[a-z][a-z]$/i; return emailExpression.test(Email); } How about name field? Can you show me some sample code? EDIT: Invalid are: blank between 4 - 20 characters Alphanumeric only(special characters not allowed) Must start with alphabet

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  • PHP Download File with Include

    - by arik-so
    How can I use PHP's include function to include a file and then modify the headers so it forces - at least that's how it's called - browsers to download ITSELF (the PHP file). Is it possible to also modify the preset save name, in order to change the extension from *.php to something else? Thanks in advance!

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  • Qt - serialize/deserialaize text plus picture

    - by Narek
    I want to use a field (kind of QTextEdit), which is capabale of storing picture and text (like MS Word is doing) and it serializes and deserialaizes picture+text data. Is there any Qt Widget that allows us to manipulate with picture and text simultaniously and it has set/get functions which operate with serializable type? In othger words, I want to know if there exsists any Qt widget that can store picture+text and has "get" types of function that returns the content of that widgets editable area, which is a Type that could be serialized with QDataStream.

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  • Django save_m2m() and excluded field

    - by jul
    hi, in a ModelForm I replaced a field by excluding it and adding a new one with the same name, as shown below in AddRestaurantForm. When saving the form with the code shown below, I get an error in form.save_m2m() ("Truncated incorrect DOUBLE value"), which seems to be due to the function to attempt to save the tag field, while it is excluded. Is the save_m2m() function supposed to save excluded fields? Is there anything wrong in my code? Thanks Jul (...) new_restaurant = form.save(commit=False) new_restaurant.city = city new_restaurant.save() tags = form.cleaned_data['tag'] if(tags!=''): tags=tags.split(',') for t in tags: tag, created = Tag.objects.get_or_create(name = t.strip()) tag.save() new_restaurant.tag.add(tag) new_restaurant.save() form.save_m2m() models.py class Tag(models.Model): name = models.CharField(max_length=100, unique=True) class Restaurant(models.Model): name = models.CharField(max_length=50) city=models.ForeignKey(City) category=models.ManyToManyField(Category) tag=models.ManyToManyField(Tag, blank=True, null=True) forms.py class AddRestaurantForm(ModelForm): name = forms.CharField(widget=forms.TextInput(attrs=classtext)) city = forms.CharField(widget=forms.TextInput(attrs=classtext), max_length=100) tag = forms.CharField(widget=forms.TextInput(attrs=classtext), required=False) class Meta: model = Restaurant exclude = ('city','tag') Traceback: File "/var/lib/python-support/python2.5/django/core/handlers/base.py" in get_response 92. response = callback(request, *callback_args, **callback_kwargs) File "/home/jul/atable/../atable/resto/views.py" in addRestaurant 498. form.save_m2m() File "/var/lib/python-support/python2.5/django/forms/models.py" in save_m2m 75. f.save_form_data(instance, cleaned_data[f.name]) File "/var/lib/python-support/python2.5/django/db/models/fields/ related.py" in save_form_data 967. setattr(instance, self.attname, data) File "/var/lib/python-support/python2.5/django/db/models/fields/ related.py" in set 627. manager.add(*value) File "/var/lib/python-support/python2.5/django/db/models/fields/ related.py" in add 430. self._add_items(self.source_col_name, self.target_col_name, *objs) File "/var/lib/python-support/python2.5/django/db/models/fields/ related.py" in _add_items 497. [self._pk_val] + list(new_ids)) File "/var/lib/python-support/python2.5/django/db/backends/util.py" in execute 19. return self.cursor.execute(sql, params) File "/var/lib/python-support/python2.5/django/db/backends/mysql/ base.py" in execute 84. return self.cursor.execute(query, args) File "/var/lib/python-support/python2.5/MySQLdb/cursors.py" in execute 168. if not self._defer_warnings: self._warning_check() File "/var/lib/python-support/python2.5/MySQLdb/cursors.py" in _warning_check 82. warn(w[-1], self.Warning, 3) File "/usr/lib/python2.5/warnings.py" in warn 62. globals) File "/usr/lib/python2.5/warnings.py" in warn_explicit 102. raise message Exception Type: Warning at /restaurant/add/ Exception Value: Truncated incorrect DOUBLE value: 'a'

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