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How do I query using fields inside the new PostgreSQL JSON datatype?
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180
Postgres 9.2
I quote Andrew Dunstan on the pgsql-hackers list:
At some stage there will p...
Mixing a PHP variable with a string literal
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edited Sep 14 '16 at 12:25
boroboris
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MongoDB - Update objects in a document's array (nested updating)
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For question #1, let's break it into two parts. First, increment any document that has "items.item_name" equal to "my_item_two". For this you'll have to use the positional "$" operator. Something like:
db.bar.update( {user_id : 123456...
Scala @ operator
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180
It enables one to bind a matched pattern to a variable. Consider the following, for instance:
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How would one call std::forward on all arguments in a variadic function?
...g the boost preprocessor meta-library to make a variadic template (using 2010 and it doesn't support them). My function uses rval references and std::forward to do perfect forwarding and it got me thinking...when C++0X comes out and I had a standard compiler I would do this with real variadic temp...
Rails 4 - Strong Parameters - Nested Objects
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184
As odd as it sound when you want to permit nested attributes you do specify the attributes of ...
How to write multiple line string using Bash with variables?
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kernel="2.6.39"
distro="xyz"
cat >/etc/myconfig.conf <<EOL
line 1, ${kernel}
line 2,
line 3, ${distro}
line 4 line
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EOL
cat /etc/myconfig.conf
This construction is referred to as a Here Document and can be found in the Bash man pages under man --pager='less -p "\s*Here Documents"'...
How to use ArrayAdapter
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156
Implement custom adapter for your class:
public class MyClassAdapter extends ArrayAdapter<...
PendingIntent does not send Intent extras
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edited Jun 8 '16 at 7:35
answered Jun 8 '16 at 7:24
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Create new tmux session from inside a tmux session
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145
The quickest way (assuming you use ctrl-b as your command prefix) is:
ctrl-b :new
To create...