大约有 43,085 项符合查询结果（耗时：0.0604秒） [XML]
@UniqueConstraint and @Column(unique = true) in hibernate annotation
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148
As said before, @Column(unique = true) is a shortcut to UniqueConstraint when it is only a sin...
Python equivalent for PHP's implode?
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187
Use the strings join-method.
print ' '.join(['word1', 'word2', 'word3'])
You can join any i...
用户界面（UI）组件 · App Inventor 2 中文网
...齐
表示屏幕内容如何水平对齐的数字，含义如下：
1 （左对齐）
2 （右对齐）
3 （水平居中）
垂直对齐
表示屏幕内容如何垂直对齐的数字，含义如下：
1 （顶部对齐）
2 （垂直居中）
3 （底部对齐...
Effect of NOLOCK hint in SELECT statements
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1) Yes, a select with NOLOCK will complete faster than a normal select.
2) Yes, a select with NOLOCK will allow other queries against the effected table to complete faster than a normal select.
Why would this be?
NOLOCK t...
Best way to check if UITableViewCell is completely visible
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10 Answers
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How do I specify local .gem files in my Gemfile?
...reman", git: "git://github.com/pje/foreman.git"
# ...or at a specific SHA-1 ref
gem "foreman", git: "git://github.com/pje/foreman.git", ref: "bf648a070c"
# ...or branch
gem "foreman", git: "git://github.com/pje/foreman.git", branch: "jruby"
# ...or tag
gem "foreman", git: "git://github.com/pje/fo...
Maven: How to include jars, which are not available in reps into a J2EE project?
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10 Answers
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This version of the application is not configured for billing through Google Play
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18 Answers
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Sass negative variable value?
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216
Try it like this
margin: 0 (-$pad) 20px (-$pad);
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How to show first commit by 'git log'?
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317
Short answer
git rev-list --max-parents=0 HEAD
(from tiho's comment. As Chris Johnsen notice...