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How to define a two-dimensional array?
...
[[0 for x in range(cols_count)] for x in range(rows_count)]
– songhir
Nov 27 '14 at 2:48
3
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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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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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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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XML serialization in Java? [closed]
...t's right, JAXB is definitely the best option!
– ivan_ivanovich_ivanoff
Apr 9 '09 at 16:55
1
JAXB...
Merge and interleave two arrays in Ruby
... +1 for being the only person who actually read the blummin' question! >_<
– Matt Fletcher
Dec 12 '13 at 10:31
5
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What are the drawbacks of Stackless Python? [closed]
...to find an ancient mailing list conversation at gnosis.cx/download/charming_python_10_outtakes.html which gives alot more insight to the situation.
– Arafangion
Feb 26 '09 at 4:48
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How can I specify a local gem in my Gemfile?
...nly by using the following configuration option:
$ bundle config local.GEM_NAME /path/to/local/git/repository
This is extremely helpful if you're developing two gems or a gem and a rails app side-by-side.
Note though, that this only works when you're already using git for your dependency, for ex...
How to set UICollectionViewDelegateFlowLayout?
...NSCollectionViewDelegateFlowLayout**
{
the method:
func collectionView(_ collectionView: NSCollectionView,
layout collectionViewLayout: NSCollectionViewLayout,
sizeForItemAt indexPath: IndexPath) -> NSSize
will be called.
If removed, no delegate meth...
MongoDB aggregation framework match OR
... as your example. See docs.mongodb.org/manual/reference/operator/query/or/#_S_or%22
– Mark Gibaud
Jan 9 '14 at 15:31
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