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How to Iterate over a Set/HashSet without an Iterator?
...therwise specified by the implementing class, actions are performed in the order of iteration (if an iteration order is specified). Exceptions thrown by the action are relayed to the caller. Implementation Requirements:
The default implementation behaves as if:
for (T t : this)
action.accept...
How do I query between two dates using MySQL?
...querying between September 29 2010 and January 30 2010). Try reversing the order of the dates:
SELECT *
FROM `objects`
WHERE (date_field BETWEEN '2010-01-30 14:15:55' AND '2010-09-29 10:15:55')
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Why is my program slow when looping over exactly 8192 elements?
...in.
Now we can see the problem is the same in this question: Why does the order of the loops affect performance when iterating over a 2D array?
You are iterating the matrix column-wise instead of row-wise.
To solve this problem, you should interchange the two loops.
for(j=1;j<SIZE-1;j++) {
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Python 3 turn range to a list
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In Pythons <= 3.4 you can, as others suggested, use list(range(10)) in order to make a list out of a range (In general, any iterable).
Another alternative, introduced in Python 3.5 with its unpacking generalizations, is by using * in a list literal []:
>>> r = range(10)
>>> l...
Running JAR file on Windows
I have a JAR file named helloworld.jar .
In order to run it, I'm executing the following command in a command-line window:
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DateTime.ToString() format that can be used in a filename or extension?
... since the list of files cannot be sorted by name to get them in date time order. Most-significant to least significant should be the order of the day.
– Bernhard Hofmann
Mar 16 '18 at 12:19
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Splitting a list into N parts of approximately equal length
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sending this output into 'zip' gives you your ordered list: zip(*chunkify(range(13), 3)) results in [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 10, 11)]
– gens
Apr 13 '17 at 18:40
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Setting Django up to use MySQL
I want to move away from PHP a little and learn Python. In order to do web development with Python I'll need a framework to help with templating and other things.
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How can I add a column that doesn't allow nulls in a Postgresql database?
...row. Not sure how Postgres locks up a table when doing this. Or, if column order matters, you can't just add a column with the ALTER command.
– alphadogg
Feb 5 '09 at 14:31
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What is the leading LINQ for JavaScript library? [closed]
...e already much more useful implementations of that in knockout, angularjs, etc.) and the answer itself doesn't even try to explain what the relevance is, and even if it was really the most appropriate choice, it's hardly "leading" - it has about 1/5 the downloads of linq.js.
– ...