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Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?

... 158 Save the conditions in a list: List<string> conditions = new List<string>(); if ...
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Pandas: drop a level from a multi-level column index?

... 321 You can use MultiIndex.droplevel: >>> cols = pd.MultiIndex.from_tuples([("a", "b"), ("...
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Print all but the first three columns

... 19 Answers 19 Active ...
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How to print last two columns using awk

... 194 You can make use of variable NF which is set to the total number of fields in the input recor...
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How to sort a list/tuple of lists/tuples by the element at a given index?

... 10 Answers 10 Active ...
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Find indices of elements equal to zero in a NumPy array

... numpy.where() is my favorite. >>> x = numpy.array([1,0,2,0,3,0,4,5,6,7,8]) >>> numpy.where(x == 0)[0] array([1, 3, 5]) share | improve this answer | ...
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Generate random number between two numbers in JavaScript

Is there a way to generate a random number in a specified range (e.g. from 1 to 6: 1, 2, 3, 4, 5, or 6) in JavaScript? 23 A...
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What is Weak Head Normal Form?

... These expressions are all in normal form: 42 (2, "hello") \x -> (x + 1) These expressions are not in normal form: 1 + 2 -- we could evaluate this to 3 (\x -> x + 1) 2 -- we could apply the function "he" ++ "llo" -- we could apply the (++) (1 + 1, 2 + 2) ...
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How do I find a “gap” in running counter with SQL?

...gap" in a counter column in an SQL table. For example, if there are values 1,2,4 and 5 I'd like to find out 3. 20 Answers ...
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Why do Lua arrays(tables) start at 1 instead of 0?

...ionale behind the decision of this part of Lua. Why does indexing start at 1? I have read (as many others did) this great paper . It seems to me a strange corner of a language that is very pleasant to learn and program. Don't get me wrong, Lua is just great but there has to be an explanation somewh...