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What is the difference between object keys with quotes and without quotes?
...ds.
Some people might be tempted to pass in a string with whitespace then call o['I can have whitespace'] But I would call that bad practice.
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correct way to use super (argument passing)
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Shouldn't Base call super(Base, self).__init__()?
– cha0site
Jan 23 '12 at 14:47
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Get the current year in JavaScript
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Create a new Date() object and call getFullYear():
new Date().getFullYear()
// returns the current year
Hijacking the accepted answer to provide some basic example context like a footer that always shows the current year:
<footer>
&copy...
What does apply_filters(…) actually do in WordPress?
...lanation
apply_filters() interacts with the global $wp_filters array. Basically it just checks the array if the current filter (or hook) has an action(/callback function) attached and then calls it.
Long explanation
When you attach a callback/action to a filter or hook, then you just add the call...
What's the point of Spring MVC's DelegatingFilterProxy?
... Because this bean implements javax.servlet.Filter, its doFilter method is called.
Which bean is called? the DelegatingFilterProxy "Supports a "targetBeanName" [...], specifying the name of the target bean in the Spring application context."
As you saw in your web.xml that the bean's name is "spri...
How are POST and GET variables handled in Python?
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I am trying to call a method in a cgi file. An example url is http://www.myserver.com/cgi-bin/cgi.py/ThisIsMyMethod. The following environmental variables are related: os.environ.get('PATH_INFO') which gets the method name (eg: /ThisIsMyMet...
What techniques can be used to define a class in JavaScript, and what are their trade-offs?
...g ones, you can also construct them "out of thin air", so to speak. If you call a function with the new keyword, that function becomes a constructor and the this keyword will not point to the current object but instead to a newly created "empty" one. So, you can configure an object any way you like....
What is the HEAD in git?
...te branch, why do you end up with a "detached HEAD". Why don't you automatically jump in the branch in your local repo that correspond to your remote?
– e-satis
Mar 27 '10 at 16:31
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Understanding repr( ) function in Python
...>>> x
'foo'
So the name x is attached to 'foo' string. When you call for example repr(x) the interpreter puts 'foo' instead of x and then calls repr('foo').
>>> repr(x)
"'foo'"
>>> x.__repr__()
"'foo'"
repr actually calls a magic method __repr__ of x, which gives the ...
What's the difference between the build and create methods in FactoryGirl?
...g FactoryGirl.build(:factory_name) does not persist to the db and does not call save!, so your Active Record validations will not run. This is much faster, but validations might be important.
Using FactoryGirl.create(:factory_name) will persist to the db and will call Active Record validations. Thi...