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<em>Mem>ySQL CONCAT returns NULL if any field contain NULL
I have following data in <em>mem>y table "devices"
6 Answers
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How do I install i<em>mem>age<em>mem>agick with ho<em>mem>ebrew?
I'<em>mem> trying to install I<em>mem>age<em>mem>agick on OSX Lion but so<em>mem>ething is not working as expected.
5 Answers
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How to return a part of an array in Ruby?
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Yes, Ruby has very si<em>mem>ilar array-slicing syntax to Python. Here is the ri docu<em>mem>entation for the array index <em>mem>ethod:
--------------------------------------------------------------- Array#[]
array[index] -&a<em>mem>p;gt; obj or nil
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How do I get cURL to not show the progress bar?
I'<em>mem> trying to use cURL in a script and get it to not show the progress bar.
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Bash: If/Else state<em>mem>ent in one line
I a<em>mem> trying to check if a process (assu<em>mem>e it is called so<em>mem>e_process ) is running on a server. If it is, then echo 1, otherwise echo 0.
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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
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Update
data.table v1.9.6+ now supports OP's original atte<em>mem>pt and the following answer is no longer necessary.
You can use DT[order(-rank(x), y)].
x y v
1: c 1 7
2: c 3 8
3: c 6 9
4: b 1 1
5: b 3 2
6: b 6 3
7: a 1 4
8: a 3 5
9: a 6 6
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UIButton re<em>mem>ove all target-actions
I have added <em>mem>ultiple target-action-forControlEvents: to a UIButton. I'd like to re<em>mem>ove all of these in one go without deallocating anything. I will then set new targets.
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Using variables inside a bash heredoc
I'<em>mem> trying to interpolate variables inside of a bash heredoc:
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Spring: Why do we autowire the interface and not the i<em>mem>ple<em>mem>ented class?
Exa<em>mem>ple
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How to interactively (visually) resolve conflicts in SourceTree / git
I'<em>mem> using (Windows) SourceTree for <em>mem>y git project. I can do it in either co<em>mem><em>mem>and pro<em>mem>pt or Linux ter<em>mem>inal.
3 Answers
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