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++someVariable vs. someVariable++ in JavaScript
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Same as in other languages:
++x (pre-increment) means "increment the variable; the value of ...				
				
				
							How to get the value from the GET parameters?
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							Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
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This is an incompatibility between Rails 2.3.8 and recent versions of RubyGems. Upgrade to the latest 2.3 version (2.3.11 as of today).
    
    
        
            
            
                
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							Is there a Unix utility to prepend timestamps to stdin?
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        edited Sep 24 '14 at 4:14
    
    
        
    
    
        Adam
        
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        answ...				
				
				
							When should I use Struct vs. OpenStruct?
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        Smar
        
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        answered Jul 24 '09 at 13:43
    
    
        
    
    
        PestoPesto
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							git diff between cloned and original remote repository
					...want to compare:
git remote add foobar git://github.com/user/foobar.git
2) Update your local copy of a remote:
git fetch foobar
Fetch won't change your working copy.
3) Compare any branch from your local repository to any remote you've added:
git diff master foobar/master
    
    
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							Bare asterisk in function arguments?
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Bare * is used to force the caller to use named arguments - so you cannot define a function wi...				
				
				
							Where can I learn jQuery? Is it worth it?
					...Action-Bear-Bibeault/dp/1933988355/ref=sr_1_1?ie=UTF8&s=books&qid=1219716122&sr=1-1 (I bought it used at Amazon for about $22). It has been a big help into bootstrapping me into jQuery. The documentation at jquery.com are also very helpful.
A place where jQuery falls a little flat is wi...				
				
				
							Convert decimal to hexadecimal in UNIX shell script
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        edited Dec 19 '08 at 2:31
    
    
        
    
    
        
        
            
        
    
            
            
                
    
        answered Dec 18 '08 at 21:46
    
    
        
    
    
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							GroupBy pandas DataFrame and select most common value
					...e .agg()
try this.
# Let's add a new col,  account
source['account'] = [1,2,3,3]
source.groupby(['Country','City']).agg(mod  = ('Short name', \
                                        lambda x: x.value_counts().index[0]),
                                        avg = ('account', 'mean') \
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