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How to get all count of mongoose model?
... here is the documentation link : mongoosejs.com/docs/api.html#model_Model.estimatedDocumentCount
– babar78
Sep 11 '18 at 10:45
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Looping over arrays, printing both index and value
...
INDEX=0
for i in $list; do
echo ${INDEX}_$i
let INDEX=${INDEX}+1
done
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How to test my servlet using JUnit
...t find bundle for base name javax.servlet.LocalStrings, locale de_DE - It happens during the execution of new MyServlet().doPost(...). Any idea what could be broken?
– Benny Neugebauer
Sep 14 '14 at 15:38
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创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...这个表上建立物化视图日志如“CREATE MATERIALIZED VIEW LOG ON T_tablename;”，再到数据库B上创建数据库链接和快速刷新的物化视图如“create materialized view mv_tablename refresh fast on demand start with sysdate next sysdate+1/288 as select * from T_tablename@dbli...
javac error: Class names are only accepted if annotation processing is explicitly requested
...s line:
javac -cp /home/manish.yadav/Desktop/JCuda-All-0.3.2-bin-linux-x86_64 EnumDevices
From the official faq:
Class names, 'HelloWorldApp', are only accepted if annotation processing is explicitly requested
If you receive this error, you forgot to include the .java suffix when compili...
Get week of year in JavaScript like in PHP
...TC dates used) and works according to the https://en.wikipedia.org/wiki/ISO_8601
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How to check for a valid Base64 encoded string
... 4 == 0 ? 0 : 4), '='), new Span<byte>(new byte[base64.Length]), out _). Thank you.
– rvnlord
Jul 28 at 20:23
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How do I move a redis database from one server to another?
... load a start up? My redis config has dbfilename set to /var/db/redis/redis_state.rdb ... is this the filename I use in place of "dump.rdb"?
– Mojo
Mar 23 '12 at 18:29
23
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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
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Remove all occurrences of char from string
...cher.quoteReplacement(replacement.toString()));
– Sal_Vader_808
Jun 27 '18 at 19:14
add a com...