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Rails: How does the respond_to block work?
... method_missing method instead.
http://ruby-metaprogramming.rubylearning.com/html/ruby_metaprogramming_2.html
The Responder class uses its method_missing as a kind of registration. When we call 'json', we are telling it to respond to requests with the .json extension by serializing to json. We n...
Causes of getting a java.lang.VerifyError
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java.lang.VerifyError can be the result when you have compiled against a different library than you are using at runtime.
For example, this happened to me when trying to run a program that was compiled against Xerces 1, but Xerces 2 was found on the classpath. The required cla...
When to call activity context OR application context?
...asons why not to use getApplicationContext() wherever you go:
It's not a complete Context, supporting everything that Activity does. Various things you will try to do with this Context will fail, mostly related to the GUI.
It can create memory leaks, if the Context from getApplicationContext() hol...
How to create JSON string in C#
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Java: function for arrays like PHP's join()?
...{"Hello", "World", "!"})
Generates:
Hello, World, !
Otherwise, Apache Commons Lang has a StringUtils class which has a join function which will join arrays together to make a String.
For example:
StringUtils.join(new String[] {"Hello", "World", "!"}, ", ")
Generates the following String:
H...
How to filter a dictionary according to an arbitrary condition function?
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Nowadays, in Python 2.7 and up, you can use a dict comprehension:
{k: v for k, v in points.iteritems() if v[0] < 5 and v[1] < 5}
And in Python 3:
{k: v for k, v in points.items() if v[0] < 5 and v[1] < 5}
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Measuring code execution time
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@ElektroHacker, you are welcome, its easier to use, plus it is more accurate then DateTime :)
– Habib
May 4 '13 at 16:06
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what is the difference between ?:, ?! and ?= in regex?
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Lightweight SQL editor for Eclipse [closed]
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Why should Java ThreadLocal variables be static
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