大约有 13,700 项符合查询结果（耗时：0.0311秒） [XML]
Absolute vs relative URLs
...
See this: http://en.wikipedia.org/wiki/URI_scheme#Generic_syntax
foo://username:password@example.com:8042/over/there/index.dtb;type=animal?name=ferret#nose
\ / \________________/\_________/ \__/ \___/ \_/ \_________/ \_________/ \__/
| | ...
How do I get the opposite (negation) of a Boolean in Python?
... function
There are also two functions in the operator module operator.not_ and it's alias operator.__not__ in case you need it as function instead of as operator:
>>> import operator
>>> operator.not_(False)
True
>>> operator.not_(True)
False
These can be useful if yo...
How to get the parent dir location
...bspath doesn't validate anything, so if we're already appending strings to __file__ there's no need to bother with dirname or joining or any of that. Just treat __file__ as a directory and start climbing:
# climb to __file__'s parent's parent:
os.path.abspath(__file__ + "/../../")
That's far less...
Object of custom type as dictionary key
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You need to add 2 methods, note __hash__ and __eq__:
class MyThing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name...
Python hashable dicts
...another dictionary for obvious reasons.
class hashabledict(dict):
def __hash__(self):
return hash(tuple(sorted(self.items())))
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fol...
Concurrent HashSet in .NET Framework?
...byte (1 byte in memory).
private ConcurrentDictionary<string, byte> _data;
This is the recommended option because the type is thread-safe and provide you the same advantages than a HashSet<T> except key and value are different objects.
Source: Social MSDN
ConcurrentBag
If you don't...
Why is __dirname not defined in node REPL?
From the node manual I see that I can get the directory of a file with __dirname , but from the REPL this seems to be undefined. Is this a misunderstanding on my side or where is the error?
...
Grid of responsive squares
...isplay: flex;
flex-wrap: wrap;
justify-content: center;
}
.square-grid__cell {
background-color: rgba(0, 0, 0, 0.03);
box-shadow: 0 0 0 1px black;
overflow: hidden;
position: relative;
}
.square-grid__content {
left: 0;
position: absolute;
top: 0;
}
.square-grid__cell:after {
...
Multiple levels of 'collection.defaultdict' in Python
... @ScienceFriction Anything specific that you need help with? When d[new_key] is accessed, it will call the lambda which will create a new defaultdict(int). And when d[existing_key][new_key2] is accessed, a new int will be created.
– interjay
Oct 11 '13 at 1...
Best way to organize jQuery/JavaScript code (2013) [closed]
...eplace them with units that are loosely coupled. So, instead of having:
ad_unit1.js
$("#au1").click(function() { ... });
ad_unit2.js
$("#au2").click(function() { ... });
I will have:
ad_unit.js:
var AdUnit = function(elem) {
this.element = elem || new jQuery();
}
AdUnit.prototype....