大约有 47,000 项符合查询结果（耗时：0.0935秒） [XML]
Find all records which have a count of an association greater than zero
...tinct.pluck :article_id
=> [43, 34, 45, 55, 17, 19, 1, 3, 4, 18, 44, 5, 13, 22, 16, 6, 53]
[11] pry(main)> _.size
=> 17
[12] pry(main)> Article.joins(:comments).size
=> 45
[13] pry(main)> Article.joins(:comments).distinct.size
=> 17
[14] pry(main)> Article.joins(:comments).di...
How to use JNDI DataSource provided by Tomcat in Spring?
... documentation.
– Etienne Miret
Sep 13 '13 at 15:18
what file exactly do you mean by "Tomcat's web context.xml" ?
...
How to get the latest tag name in current branch in Git?
...ag.
– Giorgos Kylafas
Mar 28 '12 at 13:19
22
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How to convert int to QString?
...xt context, forget about + operator.
Simply do:
// Qt 5 + C++11
auto i = 13;
auto printable = QStringLiteral("My magic number is %1. That's all!").arg(i);
// Qt 5
int i = 13;
QString printable = QStringLiteral("My magic number is %1. That's all!").arg(i);
// Qt 4
int i = 13;
QString ...
Lambda expression to convert array/List of String to array/List of Integers
...
130
You could create helper methods that would convert a list (array) of type T to a list (array) ...
Understanding how recursive functions work
...
13
This is a good analogy - although be careful not to take it too literally as each "copy" is actually the exact same code. What is different...
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...
answered Dec 29 '13 at 4:51
Paulo FreitasPaulo Freitas
10.8k1313 gold badges6767 silver badges9393 bronze badges
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Autoreload of modules in IPython [duplicate]
...
rfho_bdss
13111 silver badge1515 bronze badges
answered May 6 '12 at 17:37
Andrew_1510Andrew_1510
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CSS hexadecimal RGBA?
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113
The CSS Color Module Level 4 will probably support 4 and 8-digit hexadecimal RGBA notation!
Th...
Get the current fragment object
... CommonsWareCommonsWare
873k161161 gold badges21332133 silver badges21602160 bronze badges
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