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What is the difference between async.waterfall and async.series
The nodejs async module: https://github.com/caolan/async provides 2 similar methods, async.waterfall and async.series .
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Why is it slower to iterate over a small string than a small list?
... closer to 70% (or more) once a lot of the overhead is removed, for Python 2.
Object creation is not at fault. Neither method creates a new object, as one-character strings are cached.
The difference is unobvious, but is likely created from a greater number of checks on string indexing, with regards...
Python extending with - using super() Python 3 vs Python 2
...super() -> same as super(__class__, self)
so that would be the Python 2 equivalent for new-style classes:
super(CurrentClass, self)
for old-style classes you can always use:
class Classname(OldStyleParent):
def __init__(self, *args, **kwargs):
OldStyleParent.__init__(self, *args...
Favicon not showing up in Google Chrome [duplicate]
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236
Cache
Clear your cache. http://support.google.com/chrome/bin/answer.py?hl=en&answer=95582...
Why do you need to invoke an anonymous function on the same line?
...nstructor
var sum = new Function('a','b', 'return a + b;');
alert(sum(10, 20)); //alerts 30
2. Using Function declaration.
function sum(a, b)
{
return a + b;
}
alert(sum(10, 10)); //Alerts 20;
3. Function Expression
var sum = function(a, b) { return a + b; }
alert(sum(5, 5)); // alerts ...
Initializing a list to a known number of elements in Python [duplicate]
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answered Feb 6 '09 at 19:02
Steve LoshSteve Losh
18.5k22 gold badges4848 silver badges4444 bronze badges
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Bootstrap 3 breakpoints and media queries
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208
Bootstrap 4 Media Queries
// Extra small devices (portrait phones, less than 576px)
// No med...
Collapse sequences of white space into a single character and trim string
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125
OS X 10.7+ and iOS 3.2+
Use the native regexp solution provided by hfossli.
Otherwise
Either...
How can I format a nullable DateTime with ToString()?
How can I convert the nullable DateTime dt2 to a formatted string?
20 Answers
20
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Shell command to tar directory excluding certain files/folders
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27 Answers
27
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