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c# datatable insert column at position 0
does anyone know the best way to insert a column in a datatable at position 0?
3 Answers
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Generator Expressions vs. List Comprehension
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I know this is old, but I think it's worth noting that generators (and any iterable) can be added to lists with extend: a = [1, 2, 3] b = [4, 5, 6] a.extend(b) -- a will now be [1, 2, 3, 4, 5, 6]. (Can you add newlines in commen...
What is memoization and how can I use it in Python?
... return k * factorial(k - 1)
factorial = Memoize(factorial)
A feature known as "decorators" was added in Python 2.4 which allow you to now simply write the following to accomplish the same thing:
@Memoize
def factorial(k):
if k < 2: return 1
return k * factorial(k - 1)
The Python D...
Create array of regex matches
... I wouldn't suggest using an ArrayList here since you don't know upfront the size and might want to avoid the buffer resizing. Instead, I would prefer a LinkedList -- though it's just a suggestion and doesn't make your answer less valid whatsoever.
– Liv
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Javascript “this” pointer within nested function
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Now that's progress!
– Joshua Pinter
Jun 21 '16 at 4:59
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Placeholder in UITextView
My application uses an UITextView . Now I want the UITextView to have a placeholder similar to the one you can set for an UITextField .
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How can I add a boolean value to a NSDictionary?
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It is worth pointing out, that there is now a literal syntax for NSNumbers. @YES is the same as [NSNumber numberWithBool:YES]
– jcampbell1
Jan 4 '13 at 4:06
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How to convert an Int to a String of a given length with leading zeros to align?
... when I posted the initial answer, but I would also use the f interpolator now that it exists.
– huynhjl
Aug 8 '13 at 13:11
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C# if/then directives for debug vs release
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Thank you! I don't yet even know what "#defines" are so this is a great solution!
– Tim
Feb 8 '12 at 10:29
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How do I grep recursively?
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It is good to know that "-i" would make it case insensitive, and "-n" also include the line number for each matched result.
– Sadegh
Jan 23 '15 at 12:02
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