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How to pip or easy_install tkinter on Windows
...'ll end up with a fresh install of ActivePython, located in, e.g. C:\python32. From a Windows command prompt, or the Start Menu's "Run..." command, you should then be able to run a Python shell via:
% C:\python32\python
This should give you the Python command prompt. From the prompt, enter these ...
What exactly are iterator, iterable, and iteration?
...and iterator have specific meanings.
An iterable is an object that has an __iter__ method which returns an iterator, or which defines a __getitem__ method that can take sequential indexes starting from zero (and raises an IndexError when the indexes are no longer valid). So an iterable is an object...
Java 8: performance of Streams vs Collections
...me: 41856183 ns (0.041856 seconds)
Streams: Elapsed time: 546590322 ns (0.546590 seconds)
Parallel streams: Elapsed time: 1540051478 ns (1.540051 seconds)
That' s for a big task! (int max = 10000000) Conclusion: collecting items to collection took majority of time. The slowest part ...
Ternary Operator Similar To ?:
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Rex KerrRex Kerr
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Can I get CONST's defined on a PHP class?
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datashaman
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answered Jun 5 '09 at 15:15
Tom HaighTom Haigh
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Scala best way of turning a Collection into a Map-by-key?
...Traversable[V].mapBy( V => K) were better!
– oxbow_lakes
Jul 14 '10 at 21:17
7
Be aware that t...
Difference between passing array and array pointer into function in C
...t fix" bug report here connect.microsoft.com/VisualStudio/feedback/details/326874/…
– greggo
Dec 12 '13 at 17:02
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How to remove from a map while iterating it?
...begin(); it != m.cend() /* not hoisted */; /* no increment */)
{
if (must_delete)
{
m.erase(it++); // or "it = m.erase(it)" since C++11
}
else
{
++it;
}
}
Note that we really want an ordinary for loop here, since we are modifying the container itself. The range-based loop sh...
Delete column from SQLite table
...trate how this could be done:
BEGIN TRANSACTION;
CREATE TEMPORARY TABLE t1_backup(a,b);
INSERT INTO t1_backup SELECT a,b FROM t1;
DROP TABLE t1;
CREATE TABLE t1(a,b);
INSERT INTO t1 SELECT a,b FROM t1_backup;
DROP TABLE t1_backup;
COMMIT;
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Remove duplicate lines without sorting [duplicate]
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answered Aug 22 '17 at 3:32
AzizSMAzizSM
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