sudo /Developer/Library/uninstall-devtools –mode=all

In my case, I was using migration assistant to migrate my applications and user account to a new laptop. My older laptop had an older version of Xcode that I didn’t want included in the migration and as it is so big, I didn’t want to take the chance.

Kudos to Pushkararora.com

The syntax is straightforward. Any attribute prefixed with data- will be treated as data storage.

<div class="test" data-foo="bar"></div>

jQuery accesses this data like so…

var data = $( 'div.test' ).data( 'foo' ); // returns bar

Support for the data attribute has been added since jQuery version 1.4.3. jQuery’s implementation is smart enough that it can parse the attribute easily and even determine the correct data type used.

What I have found really useful is the fact that the jQuery can parse JSON syntax and return a JSON object. This makes passing data in PHP trivial, using the json_encode method. We also need to use htmlspecialchars method to escape or convert any quotes in the JSON string.

<?php  
$test = array( 'row' => 1, 'col' => 6, 'color' => 'pink' ); //create array of data you want to pass to jquery
$test = json_encode( $test ); //convert array to a JSON string
$test = htmlspecialchars( $test, ENT_QUOTES ); //convert any quotes into HTML entities so JSON string behaves as a proper HTML attribute.
?>
<div class="test" data-complex="<?php echo $test ; ?>"></div>

The jQuery parses the JSON string like so…

var test = $( 'div.test' ).data( 'complex' ); // returns JSON Object

console.log( test.color ); // outputs pink!

Important to note that this method is also backward compatible with older browsers, so there is no excuse not to give it a go!

If you are having difficulty installing iWorks 09 from the DVD, then this is what I went through to finally get it to work.

• Bought iWorks 09 from the Apple store, and they sent the software on a DVD (how retro!).
• Tried to install the software, but each time I was asked for a serial number or to install from the DVD.
• No serial number could be found on box, inside box, on disc etc. Confusion reigned.
• Figured as a trial version of iWorks was installed that perhaps my Mac was also confused.
• Removed the application from the Applications directory and removed any iWorks cache files from Library/Caches directory.
• Reinstalled and this time it crashed when loading… sigh.
• After a long search, I found a full list of what I need to delete to make sure no trace of iWorks exist (below).
• Restarted Mac, reinstalled and registered, I’m now good to go.

/Macintosh HD/Applications/iWork '09 (folder)
/Macintosh HD/Library/Receipts/iWork09* (any file in this folder that refers to iWork)
/Macintosh HD/Library/Preferences/com.apple.iWork09.plist
/Macintosh HD/Library/Preferences/com.apple.iWork09.Installer.plist
/Macintosh HD/Library/Application Support/iWork '09 (folder)
/Macintosh HD/Library/Application Support/iWork (folder--if present)
/username/Library/Application Support/iWork (folder)
/username/Library/Preferences/ByHost/com.apple.iWork.Pages.NUMBER.plist
/username/Library/Preferences/ByHost/com.apple.iWork.Keynote.NUMBER.plist
/username/Library/Preferences/ByHost/com.apple.iWork.Numbers.NUMBER.plist
/username/Library/Preferences/ByHost/com.apple.iWork.NUMBER.plist
/username/Library/Preferences/com.apple.iWork.Pages.plist
/username/Library/Preferences/com.apple.iWork.Keynote.plist
/username/Library/Preferences/com.apple.iWork.Numbers.plist
/username/Library/Preferences/com.apple.iWork.plist

[NOTE:: Not sure if it's relevant, but I used terminal to delete these files as I didn't trust Mac Finder at this stage!]

If you have the IP addresses, then it is trivial.

//First check IP address is valid
$request_ip = $_SERVER['REMOTE_ADDR'];

if ( !preg_match( "/^(([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/", $request_ip ) )
    return false;

$blacklist = array(
'111.222.12.11',
'222.111.21.22',
'221.112.11.12'
);

//check that ip is not blacklisted
if ( in_array( $request_ip, $blacklist ) )
    return false;

If you want to include a range of IP addresses, best to use a regular expression.

$blacklist_ip_range = array(
    '/^122\.244\.(\d+)\.(\d+)/', //for IP address in the range 122.244.0.0 - 122.244.255.255
    '/^123\.(\d+)\.(\d+)\.(\d+)/', //for IP address in the range 123.0.0.0 - 123.255.255.255
);

foreach( $blacklist_ip_range as $ip ) {
    if( preg_match( $ip, $request_ip ) )
       	return false;
    }

If you have a better solution, then please let me know.

var element = document.getElementById( 'some_element_id' );

element.style.cssFloat = 'left';

It appears the Mac mail client could not connect to the outgoing Gmail SMTP server, smtp.gmail.com, then after a few hours the connection would be restored automatically.

I assumed that my settings must be fine as they remained constant, it must be a problem on the Gmail servers end, but it was happening too often for that to be plausible.

So I used the connection doctor to see what was happening under the hood.

To access the connection doctor, go to the Windows->Connection Doctor option in your Mac mail menu.

First thing I noticed was that I was trying to connect to a bunch of different outgoing servers. This is because I had set up separate email accounts (another Gmail and Yahoo mail account). It couldn’t connect to any of them, which was suspicious in itself.

Slash and burn time. I edited my SMTP servers list and I removed the 2 other outgoing servers that I never used, leaving me the one server that I always tried to use.

I ran the connection doctor again and watched the output window.

Failed to connect again, bummer. But I noticed it was using port 25 when trying to connect. That’s not right I thought, it should use port 465 if it’s using SSL. Gmail expects you to use SSL, when connecting and to use port 465.

So I edited the remaining outgoing server connection settings by doing the following.

• Went back to editing SMTP list (described above)
• Clicked on remaining server
• Clicked on Advanced Tab

Instead of choosing ‘Use default posts‘, I specified a custom port 465 and made sure the ‘Use Secure Sockets Layer (SSL)‘ checkbox was checked.

Saved settings.

Returned to connection doctor. This time I again failed to connect (boo!) but I got a different error (yay!). Authentication failed. Huh? I didn’t change anything, how did that happen… hmm.

Now I returned to edit the remaining outgoing server. Made sure the Password option was set and I re-entered my account username & password.

Saved settings again.

At this point, I was a little exasperated so I also tried unlocking my Gmail account. I was aware that Gmail lock accounts if they detect unusual behavior, so I made sure my Gmail account was unlocked by going to https://www.google.com/accounts/UnlockCaptcha.

Tried the connection doctor again and sweet baby zeus it connected.

Unfortunately, I cannot say for certain what was the issue. I had tried unlocking the account before I started this and it didn’t connect, so it wasn’t just that.

Anyway, thought I’d post what I tried, might help someone… might also waste 10 minutes of some punter’s life!

if ( $("#mydiv").length ){
  // do something here
}

Briefer again…

if ( $("#mydiv")[0] ){
  // do something here
}

via http://aaronrussell.co.uk/legacy/check-if-an-element-exists-using-jquery/

A while ago, I came across a post on such a subject. It was written a few years ago but it’s still as relevant and useful as ever.

http://blog.stevenlevithan.com/archives/faster-trim-javascript 

The author basically compares a bunch of different methods to trim a string across the 2 big browsers at the time, Internet Explorer and Firefox, and figures out the fastest way of doing it.

For more detail, follow the link above, otherwise, here is the conclusion.

Fastest trim method for normal length strings

return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');

Fastest trim method for super long strings

function trim11 (str) {
	str = str.replace(/^\s+/, '');
	for (var i = str.length - 1; i >= 0; i--) {
		if (/\S/.test(str.charAt(i))) {
			str = str.substring(0, i + 1);
			break;
		}
	}
	return str;
}

Note: For the super geeks out there, this site will show you and allow you to test what is the fastest trim method on a particular browser… enjoy!

lsof -i:8090

This command returns a list of open processes on this port.

Something like…

COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
ssh 75782 eoin 5u IPv6 0x01c1c234 0t0 TCP localhost:8090 (LISTEN)


To free the port, kill the process using it…
kill 75782

[Update: Simpler solution found]

Easier to kill all ssh processes and restart them (if you use terminal aliases!), since in my case it is always an ssh process that is hogging the port.

killall ssh

This tool will help code meet the indentation rules in the WordPress coding standards.

If you have a group of basic assignments like…

$variable1 = 0;
$long_variable2 = 123213123;
$short = 'test';
$s = 'test2';

This tool will space them so…

$variable1      = 0;
$long_variable2 = 123213123;
$short          = 'test';
$s              = 'test2';

It will also work associative arrays…

array(
'magpie' => 0,
'blog' => 1,
'random' => 2,
'too_long_string' => 3
);

… with spacing …

array(
'magpie'          => 0,
'blog'            => 1,
'random'          => 2,
'too_long_string' => 3
);

The tool is available as a Coda plugin and a TextWrangler UNIX filter.

For Coda

• Download the Coda plugin
• Extract the zip file and double-click the tidy-assignment.codaplugin file
• Select code, right-click, goto Plug-ins->Tidy Assignment

To remove/uninstall the plugin;

• Close Coda
• Goto [your_home_folder]/Library/Application Support/Coda/Plug-ins/
• Delete the file tidy-assignment.codaplugin

For TextWrangler

• Open TextWrangler and open a new text file.
• Copy and paste the code below into this file.

#!/usr/bin/php
<?php

if ( !isset( $_SERVER['argv'] ) && !isset( $_SERVER['argv'][1] ) )
	die();

$fc    = file_get_contents( $_SERVER['argv'][1] );
$lines = explode( "\n", $fc );
$clean = array();
$assoc = false;

$longest_line_index  = 0;
$longest_line_length = 0;

foreach ( $lines as $key => $line ) {
	//remove whitspace
	$line = preg_replace( '/\s\s+/', ' ', trim( $line ) );
	$parts = array();
	
	if ( mb_stripos( $line, '=>' ) !== FALSE ) {
		$parts = explode( "=>", $line );
		$assoc = true;
	}
	elseif ( mb_stripos( $line, '=' ) !== FALSE ) {
		$parts = explode( "=", $line );
	}

	if ( !empty( $parts ) && mb_strlen( $parts[0] ) > $longest_line_length ) {
		$longest_line_index = $key;
		$longest_line_length = mb_strlen( $parts[0] );
	}
	
	if ( mb_strlen( $line ) > 0 )
		$clean[$key] = $line;
}

$longest_line = $clean[$longest_line_index];
$operator = $assoc ? '=>' : '=' ;

//add spaces to line
if ( mb_stripos( $longest_line, $operator ) !== FALSE ) {
	$parts = explode( $operator, $longest_line );
	$longest_line = sprintf( "%s %s %s", trim( $parts[0] ), $operator, trim( $parts[1] ) );
}
else {
	$longest_line = sprintf( "%s", trim( $longest_line ) );
}

//now get the position of equals
$pos = mb_stripos( $longest_line, $operator );
if ( $pos === FALSE )
	$pos = mb_strlen( $longest_line );

foreach ( $clean as $key => &$line ) {
	if ( $key == $longest_line_index )
		$line = $longest_line;
	elseif ( mb_stripos( $line, $operator ) !== FALSE ) {
		$spaces = ' ';
		$parts = explode( $operator, $line );
		if ( !empty( $parts ) )
			while ( mb_stripos( $line, $operator ) < $pos ) {
				$line = sprintf( "%s%s%s %s", trim( $parts[0] ), $spaces, $operator, trim( $parts[1] ) );
				$spaces .= " ";
			}
	}
	else {
		$line = sprintf( "%s", trim( $line ) );
	}
}

echo implode( "\n", $clean );

• Save the file, something like Tidy Assignment.php, in the Filters folder.
• You can find the filters folder by going to the #! menu and go to the Unix Filters sub-menu, and select the Open Filters Folder, like below.
  

• Now anytime you want to tidy assignments, just go to this menu and select the Tidy Assignment script.

First time I created a coda plugin and I am surprised how simple it is. I may experiment with this in the future if I can think of anything useful.