大约有 40,000 项符合查询结果（耗时：0.0250秒） [XML]
List all indexes on ElasticSearch server?
...fq_1458925279526 1 6 0 0 1008b 144b
green open qa-test_learnq_1460483735129 1 6 0 0 1008b 144b
green open qa-testimportd_1458925361399 1 6 0 0 1008b 144b
green open qa-test123p_reports 1 6 3868280 25605 5.9gb 870.5mb
gr...
if A vs if A is not None:
...summary:
object.__nonzero__(self)
Called to implement truth value testing and the built-in operation bool(); should return False or True, or their integer equivalents 0 or 1. When this method is not defined, __len__() is called, if it is defined, and the object is considered true if its res...
How do I check if there are duplicates in a flat list?
... to get O(N logN) if they're at least comparable. But you need to know or test the characteristics of the items (hashable or not, comparable or not) to get the best performance you can -- O(N) for hashables, O(N log N) for non-hashable comparables, otherwise it's down to O(N squared) and there's no...
What is the instanceof operator in JavaScript?
...
instanceof
The Left Hand Side (LHS) operand is the actual object being tested to the Right Hand Side (RHS) operand which is the actual constructor of a class. The basic definition is:
Checks the current object and returns true if the object
is of the specified object type.
Here are some good ...
Design patterns or best practices for shell scripts [closed]
...ts=`getopt -s bash -o c:d:: --long config_file:,debug_level:: -- "$@"`
if test $? != 0
then
echo "unrecognized option"
exit 1
fi
eval set -- "$getopt_results"
while true
do
case "$1" in
--config_file)
CommandLineOptions__config_file="$2";
shift 2;
...
__init__ for unittest.TestCase
I'd like to add a couple of things to what the unittest.TestCase class does upon being initialized but I can't figure out how to do it.
...
How do I implement __getattribute__ without an infinite recursion error?
... instead, it works:
class D(object):
def __init__(self):
self.test=20
self.test2=21
def __getattribute__(self,name):
if name=='test':
return 0.
else:
return object.__getattribute__(self, name)
This works because object (in this examp...
How can I time a code segment for testing performance with Pythons timeit?
...Focus on one specific thing. Disk I/O is slow, so I'd take that out of the test if all you are going to tweak is the database query.
And if you need to time your database execution, look for database tools instead, like asking for the query plan, and note that performance varies not only with the e...
Python - Create a list with initial capacity
... the covers, they are doing exactly the same thing, hence haven't actually tested the subject of this question. Best regards!
– Jonathan Hartley
Jul 16 '10 at 8:41
...
Why do we use __init__ in Python classes?
...ill be a MyInteger), but we'll ignore now. In real code, we wouldn't; we'd test it to make sure, and maybe even coerce it ("you're not an integer? by golly, you have 10 nanoseconds to become one! 9... 8....")
We could even define fractions. Fractions also know how to add themselves.
class MyFracti...