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Understanding scala enumerations
					I have to say I don't understand Scala enumeration classes. I can copy-paste the example from documentation, but I have no idea what is going on.
                    
                    
                        
                            
                                
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							HTML5 Email Validation
					...your email">
<input type="submit" value="Submit">
</form>
And when the user press submit, it automatically shows an error message like:
    
    
        
            
            
                
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							Set operations (union, intersection) on Swift array?
					Are there any standard library calls I can use to either perform set operations on two arrays, or implement such logic myself (ideally as functionally and also efficiently as possible)?
                    
                    
                        
                            
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							Build android release apk on Phonegap 3.x CLI
					How can I build an android app locally using the Phonegap 3.x CLI, ready to release? I check the bin folder generated inside the platforms/android directory of the project, and only has .debug APKs.
                    
                    
                        
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							When should Flask.g be used?
					...ting DB connections are tasks which setup the environment for the request, and should not be handled inside before_request and after_request)
    
    
        
            
            
                
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							How to get first character of string?
					I have a string, and I need to get its first character.
                    
                    
                        
                            
                                
                                        16 Answers
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							Format decimal for percentage values?
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                Looking at here big difference is like US and France type. If above varies by culture, is there a culture-independent P formatting?
                
– bonCodigo
                May 18 '14 at 1:36
                        
                            
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							How do I declare a 2d array in C++ using new?
					... rowCount; ++i)
    a[i] = new int[colCount];
The above, for colCount= 5 and rowCount = 4, would produce the following:
    
    
        
            
            
                
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							ToList()— does it create a new list?
					...en the new list would contain copies of the elements in the original list, and updating a property of an element in the new list would not affect the equivalent element in the original list.)
    
    
        
            
            
                
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							How do you run a command for each line of a file?
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Read a file line by line and execute commands: 4 answers
This is because there is not only 1 answer...
shell command line expansion
xargs dedicated tool
while read with some remarks
while read -u using dedicated fd, for interactive processing (sam...				
				
				
							