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What causes javac to issue the “uses unchecked or unsafe operations” warning
...icit about types, in one way or another.
For example. the code ArrayList foo = new ArrayList(); triggers that warning because javac is looking for ArrayList<String> foo = new ArrayList<String>();
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Is there a CSS selector by class prefix?
...ch the following element, which may be undesirable:
<div id='D' class='foo-class foo-status-bar bar-class'></div>
If you can ensure that such a scenario will never happen, then you are free to use such a selector for the sake of simplicity. However, the combination above is much more ...
Do you need to close meta and link tags in HTML?
...ed by the tag close symbol > (if we ignore certain SGML rules that nominally apply in non-XHTML HTML but were never implemented in browsers).
What you mean to ask is whether the elements need to be closed by end tags. The answer is that non-XHTML HTML (including HTML5 in HTML serialization), no ...
How can I discard remote changes and mark a file as “resolved”?
...ges causing conflicts. Is there a command I can use to in effect say "mark all conflicts as resolved, use local"?
2 Answers...
Which, if any, C++ compilers do tail-recursion optimization?
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All current mainstream compilers perform tail call optimisation fairly well (and have done for more than a decade), even for mutually recursive calls such as:
int bar(int, int);
int foo(int n, int acc) {
return (n == 0)...
What is the apply function in Scala?
...will be able to use this object as a function, as well as an object
object Foo {
var y = 5
def apply (x: Int) = x + y
}
Foo (1) // using Foo object in function notation
There are many usage cases when we would want to treat an object as a function. The most common scenario is a factory patt...
How dangerous is it to access an array out of bounds?
... repeatedly accessing a single memory location in a tight loop could literally cause that chunk of memory to melt. Other possibilities include destroying a CRT display, and moving the read/write head of a disk drive with the harmonic frequency of the drive cabinet, causing it to walk across a table...
Comparing Java enum members: == or equals()?
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Both are technically correct. If you look at the source code for .equals(), it simply defers to ==.
I use ==, however, as that will be null safe.
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How to get innerHTML of DOMNode?
...php
$doc = new \DOMDocument();
$doc->loadHTML("<body><div id='foo'><p>This is <b>an <i>example</i></b> paragraph<br>\n\ncontaining newlines.</p><p>This is another paragraph.</p></div></body>");
print innerHTML($doc-&g...
How do I wrap link_to around some html ruby code?
...wered Jul 6 '09 at 10:44
Barry GallagherBarry Gallagher
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