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Referring to the null object in Python
...t;> NoneType = type(None)
>>> id(None)
10748000
>>> my_none = NoneType()
>>> id(my_none)
10748000
>>> another_none = NoneType()
>>> id(another_none)
10748000
>>> def function_that_does_nothing(): pass
>>> return_value = function_that_...
python: Change the scripts working directory to the script's own directory
..., you can use the os.path functions:
import os
abspath = os.path.abspath(__file__)
dname = os.path.dirname(abspath)
os.chdir(dname)
This takes the filename of your script, converts it to an absolute path, then extracts the directory of that path, then changes into that directory.
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Assign a variable inside a Block to a variable outside a Block
...
You need to use this line of code to resolve your problem:
__block Person *aPerson = nil;
For more details, please refer to this tutorial: Blocks and Variables
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Should __init__() call the parent class's __init__()?
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In Python, calling the super-class' __init__ is optional. If you call it, it is then also optional whether to use the super identifier, or whether to explicitly name the super class:
object.__init__(self)
In case of object, calling the super method is not st...
How does akka compare to Erlang? [closed]
...ing Akka means that you can use Scala, Java, Groovy or JRuby to write your applications.
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What are the correct version numbers for C#?
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VERSION_____LANGUAGE SPECIFICATION______MICROSOFT COMPILER
C# 1.0/1.2____December 2001?/2003?___________January 2002?
C# 2.0_______September 2005________________November 2005?
C# 3.0_______May 2006_____________________November 20...
What are the differences between json and simplejson Python modules?
...plejson
from timeit import repeat
NUMBER = 100000
REPEAT = 10
def compare_json_and_simplejson(data):
"""Compare json and simplejson - dumps and loads"""
compare_json_and_simplejson.data = data
compare_json_and_simplejson.dump = json.dumps(data)
assert json.dumps(data) == simplejson...
How to use __doPostBack()
I'm trying to create an asyncrhonous postback in ASP.NET using __doPostBack() , but I have no idea how to do it. I want to use vanilla JavaScript.
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Replace multiple characters in one replace call
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Use the OR operator (|):
var str = '#this #is__ __#a test###__';
str.replace(/#|_/g,''); // result: "this is a test"
You could also use a character class:
str.replace(/[#_]/g,'');
Fiddle
If you want to replace the hash with one thing and the underscore with anothe...
Pros and Cons of SQLite and Shared Preferences [closed]
... a THIRD option: read/write XML to a file. (See android.util.xml classes). Appropriate for moderately complex data that can be read/written all at once. For example, a grid of values that user does not change frequently. Especially if it is data that you might later want to send elsewhere, so will n...