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Deprecation warning when using has_many :through :uniq in Rails 4
... :donations
It may look odd, but it makes a little more sense if you consider the case where you have multiple parameters. For example, this:
has_many :donors, :through => :donations, :uniq => true, :order => "name", :conditions => "age < 30"
becomes:
has_many :donors, -> { w...
How to escape special characters in building a JSON string?
...is bad because :
It IS contrary to the specs
It is no-longer JSON valid string
But it works, as you want it or not.
For new readers, always use a double quotes for your json strings.
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Create module variables in Ruby
...rd Hey my mistake. Why the need for two '@@' class variables? Isn't it considered a code smell, especially if the class is extended to use class variables? I was testing this and I realized I could get the same result from a single @ instance variable. Is there a specific reason for using class vari...
Permanently adding a file path to sys.path in Python
... example_file.py , which I wanted to use from various other files, so I decided to add example_file.py to sys.path and import this file in another file to use the file. To do so, I ran the following in IPython.
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What exactly does the enable-background attribute do?
...s was no on caniuse.com. However it was shocking that the w3.org examples didn't work on chrome/mac. Go IE 10+ for finally being first.
– QueueHammer
Sep 24 '14 at 3:50
64
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How can I add CGPoint objects to an NSArray the easy way?
...ist in nil. All objects in this structure are auto-released.
On the flip side, when you're pulling the values out of the array:
NSValue *val = [points objectAtIndex:0];
CGPoint p = [val CGPointValue];
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jQuery exclude elements with certain class in selector
...avitem").not($(this)).addClass("active");
});
});
.navitem
{
width: 100px;
background: red;
color: white;
display: inline-block;
position: relative;
text-align: center;
}
.navitem.active
{
background:green;
}
<script src="https://ajax.googleapis.com...
validation custom message for rails 3
Rails has introduced new way to validate attributes inside model.
When I use
4 Answers
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Python mock multiple return values
...
You can assign an iterable to side_effect, and the mock will return the next value in the sequence each time it is called:
>>> from unittest.mock import Mock
>>> m = Mock()
>>> m.side_effect = ['foo', 'bar', 'baz']
>>> m...
How do I reference a specific issue comment on github?
...
Also note that this works identically for comments on commits (not just comments on issues).
– Jamie S
Feb 3 '18 at 1:51
add a...