大约有 12,000 项符合查询结果(耗时:0.0334秒) [XML]

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Is it possible to use jQuery .on and hover?

...ny interference. But .hover() works just fine as an event with .on(). $("#foo").on("hover", function() { // disco }); If you want to be able to utilize its events, use the returned object from the event: $("#foo").on("hover", function(e) { if(e.type == "mouseenter") { console.log("over")...
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When is an interface with a default method initialized?

...c static void main(String[] args) throws Exception { InterfaceType foo = new InterfaceTypeImpl(); System.out.println(InterfaceType.init); foo.method(); } } class InterfaceTypeImpl implements InterfaceType { @Override public void method() { System.out.prin...
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Which MySQL data type to use for storing boolean values

... @Walter: This is easy to test, e.g SELECT 'foo' AS bar FROM dual WHERE -7. The expression -7 is evaluated in a boolean context, and the query returns a row. We can test with 0, or any expression that evaluates to integer value 0, and no row is returned. If the expres...
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Interfaces — What's the point?

...BolucPapuccuoglu: Beyond that, with a statically-typed object if one knows foo implements IWidget, then a programmer seeing a call to foo.woozle() can look at the documentation for IWidget and know what that method is supposed to do. The programmer might have no way of knowing where the code for th...
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How to return multiple lines JSX in another return statement in React?

...urn an array as part of rendering a component, e.g <div>{ this.props.foos.map(function() { return <Foo /> }) }</div>. But the render function of the component can't return that array without wrapping it, e.g. in a div. – Henrik N Jul 2 '16 at ...
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“Java DateFormat is not threadsafe” what does this leads to?

...ed to create separate format instances for each thread. So, in case your Foo.handleBar(..) is accessed by multiple threads, instead of: public class Foo { private DateFormat df = new SimpleDateFormat("dd/mm/yyyy"); public void handleBar(Bar bar) { bar.setFormattedDate(df.format(b...
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How to split a string, but also keep the delimiters?

...t("'ab','cd','eg'"))); System.out.println(Arrays.toString(p.split("boo:and:foo"))); output: [', ab, ',', cd, ',', eg, '] [boo, :, and, :, foo] EDIT: What you see above is what appears on the command line when I run that code, but I now see that it's a bit confusing. It's difficult to keep trac...
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How to change column order in a table using sql query in sql server 2005?

...nstead of using * for the 'default' order. original query: select * from foobar returns foo bar --- --- 1 2 now write select bar, foo from foobar bar foo --- --- 2 1 share | improv...
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How to output only captured groups with sed?

...ing parentheses and output what you capture using a back reference: echo "foobarbaz" | sed 's/^foo\(.*\)baz$/\1/' will output "bar". If you use -r (-E for OS X) for extended regex, you don't need to escape the parentheses: echo "foobarbaz" | sed -r 's/^foo(.*)baz$/\1/' There can be up to 9 cap...
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Finding the PHP File (at run time) where a Class was Defined

...lass ReflectionClass::getFileName — Gets a filename Example: class Foo {} $reflector = new \ReflectionClass('Foo'); echo $reflector->getFileName(); This will return false when the filename cannot be found, e.g. on native classes. ...