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Should __init__() call the parent class's __init__()?
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In Python, calling the super-class' __init__ is optional. If you call it, it is then also optional whether to use the super identifier, or whether to explicitly name the super class:
object.__init__(self)
In case of object, calling the super method is not strictly necessary, sinc...
What is an index in SQL?
...and then walk through only that subset of the table to find exact matches. If you don't have indexes on any column in the WHERE clause, the SQL server has to walk through the whole table and check every row to see if it matches, which may be a slow operation on big tables.
The index can also be a U...
Can the Unix list command 'ls' output numerical chmod permissions?
...or(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/) \
*2^(8-i));if(k)printf("%0o ",k);print}'
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Get name of current script in Python
... main module, this is the name of the script that was originally invoked.
If you want to omit the directory part (which might be present), you can use os.path.basename(__file__).
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@import vs #import - iOS 7
...inker error" messages.
You don't actually need to use the @import keyword. If you opt-in to using modules, all #import and #include directives are mapped to use @import automatically. That means that you don't have to change your source code (or the source code of libraries that you download from el...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
...as an except/except! method that returns the hash with those keys removed. If you're already using Rails, there's no sense in creating your own version of this.
class Hash
# Returns a hash that includes everything but the given keys.
# hash = { a: true, b: false, c: nil}
# hash.except(:c...
How to Flatten a Multidimensional Array?
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if you want keys,function flatten(array $array) { $return = array(); array_walk_recursive($array, function($a,$b) use (&$return) { $return[$b] = $a; }); return $return; }
– Brendon-Van-He...
Verifying that a string contains only letters in C#
I have an input string and I want to verify that it contains:
10 Answers
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Is there a built-in method to compare collections?
...whether two sequences are equal by comparing their elements by using a specified IEqualityComparer(T).
You can't directly compare the list & the dictionary, but you could compare the list of values from the Dictionary with the list
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Getting the max value of an enum
... thinking this was really trival but an elegant solution was given. Also if you want to get the enum value use Convert.ToInt32() afterwards. This is for the google results.
– jdelator
Oct 15 '08 at 1:15
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