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Returning value that was passed into a method
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Integrating the ZXing library directly into my Android application
... work it's magic [having issues?]
Enter Eclipse -> new Android Project, based on the android folder in the directory you just extracted
Right-click project folder -> Properties -> Java Build Path -> Library -> Add External JARs...
Navigate to the newly extracted folder and open the co...
Calling class staticmethod within the class body?
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staticmethod objects apparently have a __func__ attribute storing the original raw function (makes sense that they had to). So this will work:
class Klass(object):
@staticmethod # use as decorator
def stat_func():
return 42
_ANS = stat_func...
How does the @property decorator work in Python?
...is just syntactic sugar; the syntax:
@property
def foo(self): return self._foo
really means the same thing as
def foo(self): return self._foo
foo = property(foo)
so foo the function is replaced by property(foo), which we saw above is a special object. Then when you use @foo.setter(), what you ...
Python __call__ special method practical example
I know that __call__ method in a class is triggered when the instance of a class is called. However, I have no idea when I can use this special method, because one can simply create a new method and perform the same operation done in __call__ method and instead of calling the instance, you can c...
In log4j, does checking isDebugEnabled before logging improve performance?
...he call, and the framework can't do that for you. The thing with formatter-based log methods is that you can pass some Object(s) (which is essentially free), and the logger will call toString() only if required.
– SusanW
Feb 2 '17 at 14:00
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Performance of foreach, array_map with lambda and array_map with static function
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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NSInvocation for Dummies?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Spring get current ApplicationContext
...xt(getServletContext());
or
SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
As for some of the other replies, think twice before you do this:
new ClassPathXmlApplicationContext("..."); // are you sure?
...as this does not give you the current context, rather it cre...
What's the difference between parenthesis $() and curly bracket ${} syntax in Makefile?
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Based on Edouard's answer, which notes that the GNU make documentation states there's no difference, I'd guess this could just be a bug.
– Keith M
Jan 27 '17 at 17:43
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