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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...
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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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
9
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Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ IDEA
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Nonetheless, all Jetbrains products have highly configurable keymaps, I would have configured Ctr+[ & Ctrl+] for this purpose, even in Windows or Ubuntu.
– nehem
Jan 17 '17 at 6:24
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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...
How to assign name for a screen? [closed]
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A quick note on C-a : syntax.... "All screen commands are prefixed by an escape key, by default C-a (that's Control-a, sometimes written ^a). To send a literal C-a to the programs in screen, use C-a a. This is useful when working with screen within screen. Fo...
Cannot use identity column key generation with ( TABLE_PER_CLASS )
... is able to do it by its own or instead you have to add the 'INHERITS' manually. Actually i can not tell.
– zoidbeck
Mar 20 '13 at 15:09
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Finding differences between elements of a list
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Actually simply list(map(operator.sub, t[1:], t[:-1])) will do.
– blhsing
Aug 6 '18 at 15:24
add a comme...
Shortcut to comment out a block of code with sublime text
...answered Jul 12 '12 at 1:29
Randall MaRandall Ma
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