大约有 19,000 项符合查询结果（耗时：0.0386秒） [XML]
What does this symbol mean in JavaScript?
...ncatenation, and subtraction operators; unary sign operators
What does = +_ mean in JavaScript, Single plus operator in javascript
What's the significant use of unary plus and minus operators?
Why is [1,2] + [3,4] = "1,23,4" in JavaScript?
Why does JavaScript handle the plus and minus operators bet...
Find all records which have a count of an association greater than zero
...istinct
As an example
[10] pry(main)> Comment.distinct.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
...
How to select only 1 row from oracle sql?
...
SELECT user FROM Dual WHERE ROWNUM = 1
http://docs.oracle.com/cd/B19306_01/server.102/b14200/pseudocolumns009.htm
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Strip whitespace from jsp output
...rectiveWhitespaces here: java.sun.com/developer/technicalArticles/J2EE/jsp_21 and here raibledesigns.com/rd/entry/trim_spaces_in_your_jsp1
– wavetree
Aug 20 '12 at 13:40
3
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Retrieving Property name from lambda expression
...n u.Operand is MemberExpression m =>
m.Member.Name,
_ =>
throw new NotImplementedException(expression.GetType().ToString())
};
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How to capture the browser window close event?
...g anchor tags:
var inFormOrLink;
$('a[href]:not([target]), a[href][target=_self]').live('click', function() { inFormOrLink = true; });
$('form').bind('submit', function() { inFormOrLink = true; });
$(window).bind('beforeunload', function(eventObject) {
var returnValue = undefined;
if (! in...
How do I join two lists in Java?
... For the casual reader, here is a shorter solution using also Java _ Streams: stackoverflow.com/a/34090554/363573
– Stephan
Oct 4 '16 at 13:16
7
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How to detect if URL has changed after hash in JavaScript
...e that there's no native support for this...
– wasddd_
Nov 14 '18 at 18:33
1
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How to make an unaware datetime timezone aware in python
... 12, 0)
aware = datetime.datetime(2011, 8, 15, 8, 15, 12, 0, pytz.UTC)
now_aware = pytz.utc.localize(unaware)
assert aware == now_aware
For the UTC timezone, it is not really necessary to use localize since there is no daylight savings time calculation to handle:
now_aware = unaware.replace(tzin...
Seeking useful Eclipse Java code templates [closed]
...ory)}
private static final Logger LOG = LoggerFactory.getLogger(${enclosing_type}.class);
Log4J 2
${:import(org.apache.logging.log4j.LogManager,org.apache.logging.log4j.Logger)}
private static final Logger LOG = LogManager.getLogger(${enclosing_type}.class);
Log4J
${:import(org.apache.log4j....