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How do I efficiently iterate over each entry in a Java Map?
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I believe the form Map.Entry is clearer than importing the inner class into the current namespace.
– Josiah Yoder
Dec 4 '14 at 20:31
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What is the meaning of the term “thread-safe”?
...d then resumed from the original task. This requires the saving of state information in variables local to each task, usually on its stack, instead of in static or global variables.
Mutual exclusion:
Access to shared data is serialized using mechanisms that ensure only one thread reads or...
Encapsulation vs Abstraction?
...t may or may not be for aiding in abstraction, but it is certainly about information hiding and/or organisation. It demands data and functions be grouped in some way - of course good OOP practice demands that they should be grouped by abstraction. However, there are other uses which just aid in mai...
How to open a file using the open with statement
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$window.unbind('scroll', onScroll);
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Is there an XSLT name-of element?
...:element>
This is useful in an xslt template that for example handles formatting data values for lots of different elements. When you don't know the name of the element being worked on and you can still output the same element, and modify the value if need be.
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Matplotlib (pyplot) savefig outputs blank image
... plt.show()
def test_draw():
lst_iter = range(100)
lst_loss = [0.01 * i + 0.01 * i ** 2 for i in xrange(100)]
# lst_loss = np.random.randn(1, 100).reshape((100, ))
lst_acc = [0.01 * i - 0.01 * i ** 2 for i in xrange(100)]
# lst_acc = np.random.randn(1, 100).reshape((100, ))
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?? Coalesce for empty string?
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– Nick Craver♦
Mar 10 '10 at 21:01
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and what would the ??? operator do? take default values ...
Get day of week in SQL Server 2005/2008
If I have a date 01/01/2009, I want to find out what day it was e.g. Monday, Tuesday, etc...
10 Answers
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Why is LINQ JOIN so much faster than linking with WHERE?
...ch (SQL query in the DB) is quite efficient because the DB knows how to perform a join. But it doesn't really make sense to compare it with the other approaches, since they work directly in memory (Linq to DataSet)
The query with multiple tables and a Where condition actually performs a cartesian pr...
How to find all the tables in MySQL with specific column names in them?
...tabase.
– Sherlock
Mar 12 '13 at 16:01
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