This should do, I tested it.

    mailto:?subject=your%20subject&amp;body=your%20body


And as HTML with correct escaping of the ampersand:

&lt;!-- language=&quot;html&quot; --&gt;

    &lt;a href=&quot;mailto:?subject=your%20subject&amp;amp;body=your%20body&quot;&gt;test&lt;/a&gt;



This should work.. 

    &lt;a href=&quot;mailto:?subject=My Subject&quot;&gt;test&lt;/a&gt;

I tried the accepted answer but it failed to launch an email when using Chrome. Using a `%20` instead of a space worked though:

`&lt;a href=&quot;mailto:%20?subject=Wazzup&amp;body=Yo&quot;&gt;Send an Email&lt;/a&gt;`

In some part of my Python program I have a val variable that can be 1 or 0. If it&#39;s 1 I must change to 0, if it&#39;s 0 I must change to 1.

How do you do it in a Pythonic way?

    if val == 1:
        val = 0
    elif val == 0:
        val = 1

it&#39;s too long!

I did:

    swap = {0: 1, 1:0}

So I can use it:

    swap[val]

Other ideas?

Swapping 1 with 0 and 0 with 1 in a Pythonic way

For a basic app with nonconsumable in-app purchases, has anyone figured out best practices for using SKPaymentQueue&#39;s `restoreCompletedTransactions`?


### Observations ###
I know it&#39;s recommended to always register a transaction observer to receive pending transactions that make their way back to the app, but this is a different question.  It looks like `restoreCompletedTransactions` is something the app has to actively decide when to call to poll for all the purchases the customer has already made.

From what I can tell, the method is designed to retrieve purchases that may have been lost.  For example a customer might install or move an app to a new device in such a way where the app&#39;s local records of previous payments are lost or reset.


### Concerns ###
What&#39;s not clear to me is how to automatically detect this condition (i.e. how to decide when to poll for missing purchases) in a reliable way.  I don&#39;t want to screw this up and risk denying a customer access to functionality they&#39;ve already paid for.

At the same time, I don&#39;t want to call `restoreCompletedTransactions` every single time the app launches just to be safe and basically get back transactions I already know about 99.9% of the time.  (Except for in-app purchasing, my app doesn&#39;t really require any network connectivity.)


### Notes ###
Apple documentation clarifies that customers are not charged again for any nonconsumable purchases they have already made.  If they try to re-purchase, a payment transaction is still supposedly sent to the app.

Worst-case, a customer could recover purchases this way but I&#39;d still like to avoid walking them down a path that resembles re-purchasing something they&#39;ve already paid for.

When to use restoreCompletedTransactions for in-app purchases?

is there anyway that I can use &quot;mailto&quot; with empty recipient? I only want to supply the subject and the message body and then the user can write the to addresses on mail. I tried writing only a space but it didn&#39;t work.


mailto with empty recipient?

<p>is there anyway that I can use "mailto" with empty recipient? I only want to supply the subject and the message body and then the user can write the to addresses on mail. I tried writing only a space but it didn't work.</p>


I&#39;m currently working on an iPhone application with a single view, which has multiple UITextFields for input. When the keyboard shows, it overlays the bottom textfields. So I added the corresponding `textFieldDidBeginEditing:` method, to move the view up, which works great:

    - (void)textFieldDidBeginEditing:(UITextField *)textField {
    	if ( ( textField != inputAmount ) &amp;&amp; ( textField != inputAge ) ) {
    		NSTimeInterval animationDuration = 0.300000011920929;
    		CGRect frame = self.view.frame;
    		frame.origin.y -= kOFFSET_FOR_KEYBOARD;
    		frame.size.height += kOFFSET_FOR_KEYBOARD;
    		[UIView beginAnimations:@&quot;ResizeForKeyboard&quot; context:nil];
    		[UIView setAnimationDuration:animationDuration];
    		self.view.frame = frame;
    		[UIView commitAnimations];		
    	}
    }

This method checks, if the source of the message is one of the textfields that are visible when the keyboard shows, and if not, it moves the view up.

I also added the `textFieldDidEndEnditing:` method, which moves the view down again (and updates some model objects according to the changed input):

    - (void)textFieldDidEndEditing:(UITextField *)textField {
    	if ( ( textField != inputMenge ) &amp;&amp; ( textField != inputAlter ) ) {
    		NSTimeInterval animationDuration = 0.300000011920929;
    		CGRect frame = self.view.frame;
    		frame.origin.y += kOFFSET_FOR_KEYBOARD;
    		frame.size.height -= kOFFSET_FOR_KEYBOARD;
    		[UIView beginAnimations:@&quot;ResizeForKeyboard&quot; context:nil];
    		[UIView setAnimationDuration:animationDuration];
    		self.view.frame = frame;
    		[UIView commitAnimations];		
    	}
    	// Additional Code
    }

However, this solution has a simple flaw: When I finish editing one of the &quot;hidden&quot; textfields and touch another textfield, the keyboard vanishes, the view moves down, the view moves up again and the keyboard reappears.

Is there any possibility to keep the keyboard from vanishing and reappearing between two edits (of the &quot;hidden&quot; textfields - so that the view only moves when the selected textfield changes from one that would be hidden by the keyboard to one that would not be hidden)?

UITextField: move view when keyboard appears

So, I push a view controller from RootViewController like:

&lt;pre&gt;
[self.navigationController pushViewController:anotherViewController animated:YES] ;
&lt;/pre&gt;

BUT, FROM `anotherViewController` now, I want to access the RootViewController again.

I&#39;m trying

&lt;pre&gt;
// (inside anotherViewController now)
///RootViewController *root = (RootViewController*)self.parentViewController ; // No.
// err
RootViewController *root = (RootViewController*)[self.navigationController.viewControllers objectAtIndex:0] ; // YES!! it works

&lt;/pre&gt;


I&#39;m not sure WHY this works and I&#39;m not sure if its the best way to do it.  Can somebody comment on a better way to get the RootViewController from a controller you&#39;ve pushed into that RootViewController&#39;s navigationController and whether or not the way I&#39;ve done it is reliable or not?

How do I get the RootViewController from a pushed controller?

How does one convert `NSInteger` to the `NSString` datatype?

I tried the following, where month is an `NSInteger`:
        
      NSString *inStr = [NSString stringWithFormat:@&quot;%d&quot;, [month intValue]];

How do I convert NSInteger to NSString datatype?

I have a `UITableView` with 5 `UITableViewCells`. Each cell contains a `UIButton` which is set up as follows:

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
    {
         NSString *identifier = @&quot;identifier&quot;;
         UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
         if (cell == nil) {
             cell = [[UITableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
             [cell autorelelase];

             UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 5, 40, 20)];
             [button addTarget:self action:@selector(buttonPressedAction:) forControlEvents:UIControlEventTouchUpInside];
             [button setTag:1];
             [cell.contentView addSubview:button];

             [button release];
         }

         UIButton *button = (UIButton *)[cell viewWithTag:1];
         [button setTitle:@&quot;Edit&quot; forState:UIControlStateNormal];

         return cell;
    }

My question is this: in the `buttonPressedAction:` method, how do I know which button has been pressed. I&#39;ve considered using tags but I&#39;m not sure this is the best route. I&#39;d like to be able to somehow tag the `indexPath` onto the control.

    - (void)buttonPressedAction:(id)sender
    {
        UIButton *button = (UIButton *)sender;
        // how do I know which button sent this message?
        // processing button press for this row requires an indexPath. 
    }

What&#39;s the standard way of doing this?

**Edit:**

I&#39;ve kinda solved it by doing the following. I would still like to have an opinion whether this is the standard way of doing it or is there a better way?

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
    {
         NSString *identifier = @&quot;identifier&quot;;
         UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
         if (cell == nil) {
             cell = [[UITableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
             [cell autorelelase];

             UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 5, 40, 20)];
             [button addTarget:self action:@selector(buttonPressedAction:) forControlEvents:UIControlEventTouchUpInside];
             [cell.contentView addSubview:button];

             [button release];
         }

         UIButton *button = (UIButton *)[cell.contentView.subviews objectAtIndex:0];
         [button setTag:indexPath.row];
         [button setTitle:@&quot;Edit&quot; forState:UIControlStateNormal];

         return cell;
    }

    - (void)buttonPressedAction:(id)sender
    {
        UIButton *button = (UIButton *)sender;
        int row = button.tag;
    }

What&#39;s important to note is that I can&#39;t set the tag in the creation of the cell since the cell might be dequeued instead. It feels very dirty. There must be a better way.

Detecting which UIButton was pressed in a UITableView

I have a `NSString` like this:

    Hello 
    World
    of
    Twitter
    Lets See this
    &gt;

I want to transform it to: 

&gt; Hello World of Twitter Lets See this &gt;

How can I do this? I&#39;m using Objective-C on an iPhone.

Removing new line characters from NSString

I use [TinyMCE][1] to allow minimal formatting of text within my site. From the HTML that&#39;s produced, I&#39;d like to convert it to plain text for e-mail. I&#39;ve been using a class called [html2text][2], but it&#39;s really lacking in UTF-8 support, among other things. I do, however, like that it maps certain HTML tags to plain text formatting — like putting underscores around text that previously had &amp;lt;i&amp;gt; tags in the HTML.

Does anyone use a similar approach to converting HTML to plain text in PHP? And if so: Do you recommend any third-party classes that I can use? Or how do you best tackle this issue?

  [1]: http://tinymce.moxiecode.com/
  [2]: http://www.chuggnutt.com/html2text.php

Converting HTML to plain text in PHP for e-mail

I am trying to create a mail sending application in Android. 

If I use: 

    Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);

This will launch the built-in Android application; I&#39;m trying to send the mail on button click directly **without** using this application.

Sending Email in Android using JavaMail API without using the default/built-in app

I having trouble figuring out `NSBundle` &amp; DocumentDirectory data, I have a Camera Picture &quot;*imageView*&quot; that I&#39;m saving to the `NSDocumentDirectoy` and then want to retrieve it for attaching to an email,

 Here the saving code:
    
    - (IBAction)saveImage {
     	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
	    NSString *documentsDirectory = [paths objectAtIndex:0];
	    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@&quot;savedImage.png&quot;];
	    UIImage *image = imageView.image; // imageView is my image from camera
	    NSData *imageData = UIImagePNGRepresentation(image);
	    [imageData writeToFile:savedImagePath atomically:NO];	
    }


Here is the new getting data code:

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
		NSString *documentsDirectory = [paths objectAtIndex:0];
		NSString *appFile = [documentsDirectory stringByAppendingPathComponent:@&quot;savedImage.png&quot;];
		NSData *myData = [[[NSData alloc] initWithContentsOfFile:appFile] autorelease];
		[picker addAttachmentData:myData mimeType:@&quot;image/png&quot; fileName:@&quot;savedImage&quot;];








Saving image to Documents directory and retrieving for email attachment

I&#39;m not asking about full email validation.

I just want to know what are allowed characters in `user-name` and `server` parts of email address. This may be oversimplified, maybe email adresses can take other forms, but I don&#39;t care. I&#39;m asking about only this simple form: `user-name@server` (e.g. wild.wezyr@best-server-ever.com) and allowed characters in both parts.

What characters are allowed in an email address?

When sending an HTML email can you link to an external style sheet or does the CSS need to be included in the email?

Also, if you can link to an external style sheet, which way is more efficient/is smarter to use: linking to the style sheet or including it in the HTML?

Content Type	Original Author	Original Content on Stackoverflow
Question	xenep	View Question on Stackoverflow
Solution 1 - Iphone	Ben Fransen	View Answer on Stackoverflow
Solution 2 - Iphone	Immanuel	View Answer on Stackoverflow
Solution 3 - Iphone	kmgdev	View Answer on Stackoverflow

mailto with empty recipient?

Iphone Problem Overview

Iphone Solutions

Solution 1 - Iphone

Solution 2 - Iphone

Solution 3 - Iphone

When to use restoreCompletedTransactions for in-app purchases?

Swapping 1 with 0 and 0 with 1 in a Pythonic way

Attributions