大约有 7,000 项符合查询结果（耗时：0.0209秒） [XML]
MySQL skip first 10 results
...eturn results 11-60 (where result 1 is the first row), use:
SELECT * FROM foo LIMIT 10, 50
For a solution to return all results, see Thomas' answer.
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The Guava library: What are its most useful and/or hidden features? [closed]
...:
Multimaps are just great. Any time you would use something like Map<Foo, Collection<Bar>>, use a multimap instead and save yourself a ton of tedious checking for an existing collection mapped to a key and creating and adding it if it isn't there.
Ordering is great for building Compar...
Creating hidden arguments with Python argparse
...rgparse.ArgumentParser(prog='frobble')
>>> parser.add_argument('--foo', help=argparse.SUPPRESS)
>>> parser.print_help()
usage: frobble [-h]
optional arguments:
-h, --help show this help message and exit
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Why can't I overload constructors in PHP?
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return $obj;
}
}
$myObject = MyClass::makeNewWithParameterA("foo");
$anotherObject = MyClass::makeNewWithParametersBandC("bar", 3);
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Convert String to equivalent Enum value
...ach enum.
For example if you have enum MyEnum you can say MyEnum.valueOf("foo")
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How do I abort/cancel TPL Tasks?
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Like this post suggests, this can be done in the following way:
int Foo(CancellationToken token)
{
Thread t = Thread.CurrentThread;
using (token.Register(t.Abort))
{
// compute-bound work here
}
}
Although it works, it's not recommended to use such approach. ...
Is it possible to use the instanceof operator in a switch statement?
...Map<Class,Runnable> doByClass = new HashMap<>();
doByClass.put(Foo.class, () -> doAClosure(this));
doByClass.put(Bar.class, this::doBMethod);
doByClass.put(Baz.class, new MyCRunnable());
// of course, refactor this to only initialize once
doByClass.get(getClass()).run();
If you n...
How do I ALTER a PostgreSQL table and make a column unique?
...Or, have the DB automatically assign a constraint name using:
ALTER TABLE foo ADD UNIQUE (thecolumn);
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How to check if a string contains text from an array of substrings in JavaScript?
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var yourstring = 'tasty food'; // the string to check against
var substrings = ['foo','bar'],
length = substrings.length;
while(length--) {
if (yourstring.indexOf(substrings[length])!=-1) {
// one of the substrings is in yourstring
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Captured variable in a loop in C#
...:
for (int i=0; i < 10; i++) // Just one variable
foreach (string x in foo) // And again, despite how it reads out loud
See section 7.14.4.2 of the C# 3.0 spec for more details of this, and my article on closures has more examples too.
Note that as of the C# 5 compiler and beyond (even when s...