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How to execute a raw update sql with dynamic binding in rails
...e.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st.close
I'm not sure if there are other ramifications to doing this (connections left open, etc). I would trace the Rails code for a normal update to see what it's doing aside from the actual q...
How can I see which Git branches are tracking which remote / upstream branch?
...or scripting:
git branch -vv # doubly verbose!
Note that with git 1.8.3, that upstream branch is displayed in blue (see "What is this branch tracking (if anything) in git?")
If you want clean output, see arcresu's answer - it uses a porcelain command that I don't believe existed at the time ...
Make a link use POST instead of GET
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edited Feb 19 '16 at 23:14
Michał Perłakowski
63.1k2121 gold badges133133 silver badges148148 bronze badges
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How can I print variable and string on same line in Python?
...ding, fill, alignment,width, set precision etc
>>> print "{:d} {:03d} {:>20f}".format(1,2,1.1)
1 002 1.100000
^^^
0's padded to 2
Demo:
>>> births = 4
>>> print "If there was a birth every 7 seconds, there would be: ",births,"births"
If there was a birt...
How can I remove an element from a list, with lodash?
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thefourtheyethefourtheye
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The 'packages' element is not declared
When using asp.net mvc 3 project with vs 2010 I have lots of warnings like the ones below:
5 Answers
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How do I run a Ruby file in a Rails environment?
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136
The simplest way is with rails runner because you don't need to modify your script.
http://gui...
How to automatically generate N “distinct” colors?
...ss or saturation, you can distribute the hues like so:
// assumes hue [0, 360), saturation [0, 100), lightness [0, 100)
for(i = 0; i < 360; i += 360 / num_colors) {
HSLColor c;
c.hue = i;
c.saturation = 90 + randf() * 10;
c.lightness = 50 + randf() * 10;
addColor(c);
}
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What does PHP keyword 'var' do?
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386
It's for declaring class member variables in PHP4, and is no longer needed. It will work in PH...
Fast and responsive interactive charts/graphs: SVG, Canvas, other?
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183
Fortunately, drawing 2000 circles is a pretty easy example to test. So here are four possible im...