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Merge and interleave two arrays in Ruby
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DigitalRossDigitalRoss
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Call a global variable inside module
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FentonFenton
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Is there a difference between “raise exception()” and “raise exception” without parenthesis?
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3 Answers
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Counting the occurrences / frequency of array elements
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36 Answers
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How to drop multiple columns in postgresql
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longlong
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SQLite table constraint - unique on multiple columns
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348
Put the UNIQUE declaration within the column definition section; working example:
CREATE TABL...
Real life example, when to use OUTER / CROSS APPLY in SQL
...xec_query_stats AS qs
CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle)
3) Reusing a column alias
SELECT number,
doubled_number,
doubled_number_plus_one
FROM master..spt_values
CROSS APPLY (SELECT 2 * CAST(number AS BIGINT)) CA1(doubled_number)
CROSS APPLY (SELECT doubled_number...
How to properly compare two Integers in Java?
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312
No, == between Integer, Long etc will check for reference equality - i.e.
Integer x = ...;
In...
Why are hexadecimal numbers prefixed with 0x?
...ramming number systems were decimal and octal — mainframes had 12, 24 or 36 bits per byte, which is nicely divisible by 3 = log2(8).
The BCPL language used the syntax 8 1234 for octal numbers. When Ken Thompson created B from BCPL, he used the 0 prefix instead. This is great because
an integer ...