大约有 30,000 项符合查询结果（耗时：0.0394秒） [XML]
Ajax using https on an http page
<em>Mem>y site uses http and https protocol; it doesn't affect the content. <em>Mem>y site uses jQuery ajax calls, which fills so<em>mem>e areas on the page, too.
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Select rows which are not present in other table
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There are basically 4 techniques for this task, all of the<em>mem> standard SQL.
NOT EXISTS
Often fastest in Postgres.
SELECT ip
FRO<em>Mem> login_log l
WHERE NOT EXISTS (
SELECT -- SELECT list <em>mem>ostly irrelevant; can just be e<em>mem>pty in Postgres
FRO<em>Mem> ip_location
WHERE ip = l.i...
Why is Scala's i<em>mem><em>mem>utable Set not covariant in its type?
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Set is invariant in its type para<em>mem>eter because of the concept behind sets as functions. The following signatures should clarify things slightly:
trait Set[A] extends (A=&a<em>mem>p;gt;Boolean) {
def apply(e: A): Boolean
}
If Set were covariant in A, the apply <em>mem>et...
Creating a zero-filled pandas data fra<em>mem>e
What is the best way to create a zero-filled pandas data fra<em>mem>e of a given size?
6 Answers
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DataContractSerializer doesn't call <em>mem>y constructor?
I just realized so<em>mem>ething crazy, which I assu<em>mem>ed to be co<em>mem>pletely i<em>mem>possible : when deserializing an object, the DataContractSerializer doesn't call the constructor !
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A si<em>mem>ple co<em>mem><em>mem>and line to download a re<em>mem>ote <em>mem>aven2 artifact to the local repository?
I have a library that I distribute using <em>mem>aven 2. The typical user of this library doesn't use <em>mem>aven to build their applications, but is likely so<em>mem>ewhat fa<em>mem>iliar with <em>mem>aven and probably has it installed.
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Loading existing .ht<em>mem>l file with android WebView
I did try sa<em>mem>ples, de<em>mem>os fro<em>mem> Google codes and other resources with WebView , but when i try to do it in <em>mem>y own code, it doesn't work for <em>mem>e.
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PostgreSQL delete all content
Hello I want to delete all data in <em>mem>y postgresql tables, but not the table itself.
How could I do this?
3 Answers
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Angularjs if-then-else construction in expression
Can I so<em>mem>ehow use if-then-else construction (ternary-operator) in angularjs expression, for exa<em>mem>ple I have function $scope.isExists(ite<em>mem>) that has to return bool value.
I want so<em>mem>ething like this,
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git: Show index diff in co<em>mem><em>mem>it <em>mem>essage as co<em>mem><em>mem>ent
When git co<em>mem><em>mem>it open the <em>mem>essage editor is shows a brief status, so<em>mem>ething like this:
5 Answers
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