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Rank function in MySQL
...INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUES (3, 'Jack', 30, 'M');
INSERT INTO person VALUES (4, 'Bill', 32, 'M');
INSERT INTO person VALUES (5, 'Nick', 22, 'M');
INSERT INTO person VALUES (6, 'Kathy', 18, 'F');
INSERT INTO person VALUES (7, 'Steve', 36, 'M');
INSERT INT...
case-insensitive list sorting, without lowercasing the result?
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In Python 3.3+ there is the str.casefold method that's specifically designed for caseless matching:
sorted_list = sorted(unsorted_list, key=str.casefold)
In Python 2 use lower():
sorted_list = sorted(unsorted_list, key=lambda s: s....
Type hinting a collection of a specified type
Using Python 3's function annotations, it is possible to specify the type of items contained within a homogeneous list (or other collection) for the purpose of type hinting in PyCharm and other IDEs?
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Java 8 NullPointerException in Collectors.toMap
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13 Answers
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Determining complexity for recursive functions (Big O notation)
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362
The time complexity, in Big O notation, for each function:
int recursiveFun1(int n)
{
if ...
How do you run multiple programs in parallel from a bash script?
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psmearspsmears
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54
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Can you do greater than comparison on a date in a Rails 3 search?
I have this search in Rails 3:
4 Answers
4
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Is there an exponent operator in C#?
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235
The C# language doesn't have a power operator. However, the .NET Framework offers the Math.Pow ...
In CMake, how can I test if the compiler is Clang?
...also work correctly if a compiler wrapper like ccache is used.
As of CMake 3.0.0 the CMAKE_<LANG>_COMPILER_ID value for Apple-provided Clang is now AppleClang. To test for both the Apple-provided Clang and the regular Clang use the following if condition:
if (CMAKE_CXX_COMPILER_ID MATCHES "Cla...