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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
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If you have several versions of Python installed, /usr/bin/env will ensure the interpreter used is the first one on your environment's $PATH. The alternative would be to hardcode something like #!/usr/bin/python; that's ok, b...
Override console.log(); for production [duplicate]
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var console = {};
console.log = function(){};
For some browsers and minifiers, you may need to apply this onto the window object.
window.console = console;
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Big-O for Eight Year Olds? [duplicate]
...rd time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't grow because there are more items. And an O(n) operation would mean that you would perform a se...
Number of elements in a javascript object
...ntProperties(obj) {
var count = 0;
for(var prop in obj) {
if(obj.hasOwnProperty(prop))
++count;
}
return count;
}
In case of ECMAScript 5 capable implementations, this can also be written as (Kudos to Avi Flax)
function countProperties(obj) {
return Objec...
How do I implement __getattribute__ without an infinite recursion error?
...t__ attribute inside __getattribute__ invokes your __getattribute__ again. If you use object's __getattribute__ instead, it works:
class D(object):
def __init__(self):
self.test=20
self.test2=21
def __getattribute__(self,name):
if name=='test':
return 0.
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ImportError: Cannot import name X
I have four different files named: main, vector, entity and physics. I will not post all the code, just the imports, because I think that's where the error is. (If you want, I can post more)
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How do I create ColorStateList programmatically?
...ce/android/R.attr.html#state_above_anchor for a list of available states.
If you want to set colors for disabled, unfocused, unchecked states etc. just negate the states:
int[][] states = new int[][] {
new int[] { android.R.attr.state_enabled}, // enabled
new int[] {-android.R.attr.state_e...
Suppress warning “Category is implementing a method which will also be implemented by its primary cl
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A category allows you to add new methods to an existing class. If you want to reimplement a method that already exists in the class, you typically create a subclass instead of a category.
Apple documentation: Customizing existing classes
If the name of a method declared in a
categ...
Is there a standard way to list names of Python modules in a package?
...name):
file, pathname, description = imp.find_module(package_name)
if file:
raise ImportError('Not a package: %r', package_name)
# Use a set because some may be both source and compiled.
return set([os.path.splitext(module)[0]
for module in os.listdir(pathname)
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What is the correct format to use for Date/Time in an XML file
...ing .NET? Do I simply use DateTime.ToString() , or do I have to use a specific format?
5 Answers
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