dive

# shutdown Skype
# Skype username - it's a login at Skype
# Mac username - it's a short username of Mac OS X (ex.: dive)
# <...> should be entered without brackets <>

#copy this one, paste to Terminal.app and hit Enter
sqlite3 "$HOME/Library/Application Support/Skype/<your_skype_username>/main.db"

#then copy this one, paste to Terminal.app where sqlite3 running and hit Enter
delete from Messages where dialog_partner = '<delete_history_of_conversation_with_particurarly_username>';

dive

--- 123.html
+++ (clipboard)
@@ -183,7 +183,7 @@
 	
 	.main {
 		
-		
+		background:url(/i/login/field.jpg) 50% 64%;
 		
 		

dive

- (void)saveArrayOfImages:(NSMutableArray *)arrayOfImages
{        
    for (UIImage *imageObject in arrayOfImages)
    {
        dispatch_queue_t backgroundQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
        dispatch_async(backgroundQueue, ^{
            NSManagedObjectContext *context = [appDelegate managedObjectContext];
            
            NSData *dataFromImage = UIImagePNGRepresentation(imageObject);
            

dive

NSString *string = [NSString stringWithUTF8String: @"http://президент.рф"];
NSURL *url = [NSURL URLWithString:[string stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

After this operations I check NSURL with:
[[UIApplication sharedApplication] canOpenURL:url] 

canOpenURL return true. Then I open this NSURL at build-in browser Safari, 
Safari told me that this page cannot be opened 
(encoded URL seems like: http://xn--d1abbgf6aiiy.xn--p1ai), 
after this I just press Refresh at browser without any additional actions 

dive

set volume_path_to_disable to POSIX path of "/Volumes/Macintosh HD/"
set volume_path_to_enable to POSIX path of "/Volumes/OS X Mountain Lion"

set command to "mdutil -d " & quoted form of volume_path_to_disable & "&&" & "mdutil -i on " & quoted form of volume_path_to_enable

do shell script command with administrator privileges

dive

/* 1 - непосредственно в интерфейсе класса (*.h) */

@interface IVExample : NSObject {
    NSString *string;
    int number;
}
@end

dive

/* 2 - в class extension */

@interface IVExample () {
    NSString *string;
    int number;
}
@end

dive

/* 3 - в начале имплементации класса (*.m) */

@implementation IVExample () {
    NSString *string;
    int number;
}

...

@end

dive

# navigation
# ctrl + A - moves to the start of the line
# ctrl + E - moves to the end of the line
# ctrl + B - move back on character
# ctrl + F - move forward one character
# esc  + B - move back one word
# esc  + F - move forward one word
# alt  + <-/->
# ctrl + U - delete from the cursor to the beginning of the line
# ctrl + K - delete from the cursor to the end of the line

dive

#!/bin/bash

# by Artyom Loenko aka dive (artyom.loenko@mac.com)

# Usage:
#	- download this script
#	- open Terminal.app
#	- goto to Folder where script downloaded
#	- run 'chmod +x fix_skype_conversation_icons_retina.sh'
#	- then run './fix_skype_conversation_icons_retina.sh'