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running Rails console in production
...e production
production can of course be substituted with development or test (value is development by default)
Adding the option --sandbox makes it so that any changes you make to your database in the console will be rolled back after you exit
If this isn't working for you, you may need to try
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How to dynamically create CSS class in JavaScript and apply?
...ment.className = element.className + " " + name;
}
}
Here's a little test page as well: https://gist.github.com/shadybones/9816763
The key little bit is the fact that style elements have a "styleSheet"/"sheet" property which you can use to to add/remove rules on.
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How can I convert an RGB image into grayscale in Python?
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Three of the suggested methods were tested for speed with 1000 RGBA PNG images (224 x 256 pixels) running with Python 3.5 on Ubuntu 16.04 LTS (Xeon E5 2670 with SSD).
Average run times
pil : 1.037 seconds
scipy: 1.040 seconds
sk : 2.120 seconds
PIL and ...
How to read the content of a file to a string in C?
...e more tricky, and unfortunately I don't have a compiler in front of me to test, but the functionality is provided by CreateFileMapping() and MapViewOfFile().
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String concatenation in Ruby
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The + operator is the normal concatenation choice, and is probably the fastest way to concatenate strings.
The difference between + and << is that << changes the object on its left hand side, and + doesn't.
irb(main):001:0> s = 'a'
=> "a"
irb(main):002:0> s + 'b'
=> "ab"
i...
Join/Where with LINQ and Lambda
...IN condition; you don't need to use WHERE clause!": the WHERE clause isn't testing equality between ID fields, it's testing equality between the post ID column and the id parameter declared outside the query.
– Daniel Schaffer
May 27 '13 at 15:45
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How do you get the width and height of a multi-dimensional array?
... other posts are confused about which dimension is which. Here's an NUNIT test that shows how 2D arrays work in C#
[Test]
public void ArraysAreRowMajor()
{
var myArray = new int[2,3]
{
{1, 2, 3},
{4, 5, 6}
};
int rows = myArray.GetLength(0);
int...
jquery-ui sortable | How to get it work on iPad/touchdevices?
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Found a solution (only tested with iPad until now!)!
http://touchpunch.furf.com/content.php?/sortable/default-functionality
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How to create Android Facebook Key Hash?
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Sounds correct. Just tested it on my machine, was 28 chars long for me, just to give you an idea. Now just copy it over and you're fine. :)
– user658042
Sep 21 '11 at 21:10
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Check to see if python script is running
....error:
print 'lock exists'
sys.exit()
get_lock('running_test')
while True:
time.sleep(3)
It is atomic and avoids the problem of having lock files lying around if your process gets sent a SIGKILL
You can read in the documentation for socket.close that sockets are automatically...