大约有 44,000 项符合查询结果（耗时：0.0435秒） [XML]
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback.
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How do PHP sessions work? (not “how are they used?”)
...d in a cookie, but sent in URLs, too -- but that's quite rare, nowadays.
For more informations, you can take a look at the Session Handling section of the manual, that gives some useful informations.
For instance, there is a page about Passing the Session ID, which explains how the session id is ...
Postgres NOT in array
...{1,2,3}') does not yield the desired result: The process compares 3 with 1 for inequality, which is true, and immediately returns true. A single value in the array different from 3 is enough to make the entire condition true. The 3 in the last array position is prob. never used.
3 <> all('{1,...
How can I set the WiX installer version to the current build version?
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Just what I was looking for! Although I had to use "!(bind.FileVersion.FileId)" (a "!" instead of "$"), otherwise I got a preprocessor directive error.
– Nicholas Piasecki
Mar 17 '09 at 19:41
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Best way for a 'forgot password' implementation? [closed]
I'm looking for the best method to implement a "forgot password" feature.
10 Answers
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Choose File Dialog [closed]
...te choose file dialog? Maybe one where you can filter out all files except for ones with specific extensions?
6 Answers
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Using Panel or PlaceHolder
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Heh, I tried to force downlevel table rendering out of my mind.. thanks for bringing that back up :-)
– Steven Robbins
Jan 27 '09 at 14:17
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offsetting an html anchor to adjust for fixed header [duplicate]
...esn't depend on a parent element whose position is set to relative. Thanks for posting this.
– Eric Mill
May 27 '13 at 2:04
84
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How to programmatically set the layout_align_parent_right attribute of a Button in Relative Layout?
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Its working only for once, if I change alignment its not getting updated. May I know what can be the issue ??
– Shshank Bhong
Feb 21 '18 at 7:56
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Update a record without first querying?
...se and load a list of items. Then I open one of the items in a detail view form, and instead of re-querying the item out of the database, I create an instance of the item from the datasource in the list.
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