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Converting a list to a set changes element order
... list, you can do this with a list comprehension:
>>> a = [1, 2, 20, 6, 210]
>>> b = set([6, 20, 1])
>>> [x for x in a if x not in b]
[2, 210]
If you need a data structure that supports both fast membership tests and preservation of insertion order, you can use the keys...
Difference between std::system_clock and std::steady_clock?
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From N3376:
20.11.7.1 [time.clock.system]/1:
Objects of class system_clock represent wall clock time from the system-wide realtime clock.
20.11.7.2 [time.clock.steady]/1:
Objects of class steady_clock represent clocks for which...
How to implement LIMIT with SQL Server?
...
Starting SQL SERVER 2005, you can do this...
USE AdventureWorks;
GO
WITH OrderedOrders AS
(
SELECT SalesOrderID, OrderDate,
ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber'
FROM Sales.SalesOrderHeader
)
SELECT *
FROM Ordered...
Left-pad printf with spaces
... |
edited Oct 1 '17 at 15:20
mwfearnley
2,07411 gold badge2424 silver badges2626 bronze badges
answered ...
Is it possible to assign numeric value to an enum in Java?
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public enum EXIT_CODE {
A(104), B(203);
private int numVal;
EXIT_CODE(int numVal) {
this.numVal = numVal;
}
public int getNumVal() {
return numVal;
}
}
...
Can you write nested functions in JavaScript?
...sole.log(a(3)(4));
– Anne Ortiz
Jul 20 at 19:42
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How to see which flags -march=native will activate?
...d line...
– thkala
Jan 30 '15 at 10:20
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How can I tell when a MySQL table was last updated?
...ter of my page, I would like to add something like "last updated the xx/xx/200x" with this date being the last time a certain mySQL table has been updated.
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Visual Studio, debug one of multiple threads
...g happens
– deadManN
Jan 7 '17 at 6:20
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When to use the brace-enclosed initializer?
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answered Apr 2 '12 at 13:20
juanchopanzajuanchopanza
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