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What is an efficient way to implement a singleton pattern in Java? [closed]
...An online portion of "Effective Java" says:
"This approach is functionally equivalent to the public field approach, except that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated...
How to find out if a Python object is a string?
...r with unicode.
However, you may not need to do explicit type checking at all. "Duck typing" may fit your needs. See http://docs.python.org/glossary.html#term-duck-typing.
See also What’s the canonical way to check for type in python?
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Google Map API v3 — set bounds and center
...rkers from an array, however I do not know how to center and zoom automatically with respect to the markers.
6 Answers
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Checking if a field contains a string
I'm looking for an operator, which allows me to check, if the value of a field contains a certain string.
10 Answers
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How to delete projects in IntelliJ 12?
... project you just deleted. So I am thinking there should be another (and really easy way) to delete a project.
10 Answers
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HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...doesn't work properly on IE9 and below.
That's because in a table layout, all elements should follow the same structural properties.
By using display: block; for the <thead> and <tbody> elements, we've broken the table structure.
Redesign layout via JavaScript
One approach is to rede...
A 'for' loop to iterate over an enum in Java
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.values()
You can call the values() method on your enum.
for (Direction dir : Direction.values()) {
// do what you want
}
This values() method is implicitly declared by the compiler. So it is not listed on Enum doc.
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JUnit 4 compare Sets
...would you succinctly assert the equality of Collection elements, specifically a Set in JUnit 4?
9 Answers
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Difference between single quotes and double quotes in Javascript [duplicate]
..."It's alright"; // single quote inside double quotes var answer = "He is called 'Johnny'"; // single quotes inside double quotes var answer = 'He is called "Johnny"'; // double quotes inside single quotes
– broadband
Mar 5 '15 at 11:26
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Fixed page header overlaps in-page anchors
...(unrelated to anchors) been driving me crazy. Your non-clickable comment really helped. I owe ya big!
– zipzit
Mar 21 '14 at 16:27
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