大约有 47,000 项符合查询结果（耗时：0.0602秒） [XML]
Proper usage of Optional.ifPresent()
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jwismar
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answered Jun 15 '14 at 9:41
JB NizetJB Nizet
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MongoDB not equal to
...ery"})
db.test.find({'post': {$ne : ""}})
{ "_id" : ObjectId("4f68b1a7768972d396fe2268"), "author" : "you", "post" : "how to query" }
And now $not, which takes in predicate ($ne) and negates it ($not):
db.test.find({'post': {$not: {$ne : ""}}})
{ "_id" : ObjectId("4f68b19c768972d396fe2267"), "aut...
Rollback a Git merge
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Jul 30 '12 at 13:32
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Mercurial: Can I rename a branch?
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224
Update to the stiging branch and create a new branch off of it. Then close the old branch.
In...
Likelihood of collision using most significant bits of a UUID in Java
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213
According to the documentation, the static method UUID.randomUUID() generates a type 4 UUID.
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Remove commas from the string using JavaScript
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2 Answers
2
Active
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How to add global ASP.Net Web Api Filters?
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edited Jun 21 '12 at 13:30
Shane Courtrille
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How to get year/month/day from a date object?
alert(dateObj) gives Wed Dec 30 2009 00:00:00 GMT+0800
16 Answers
16
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Escape single quote character for use in an SQLite query
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298
Try doubling up the single quotes (many databases expect it that way), so it would be :
INSER...
How can I detect whether an iframe is loaded?
... });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id='click'>click me</button>
<iframe style="display:none" id='MainPopupIframe' src='' /></iframe>
jsfiddle DEMO.
Update: Using plain javascri...