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Multiple levels of 'collection.defaultdict' in Python
...ng 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 12:53
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super() fails with error: TypeError “argument 1 must be type, not classobj” when parent does not inh
...ss. Change it like so:
class B(object):
and it will work.
super() and all subclass/superclass stuff only works with new-style classes. I recommend you get in the habit of always typing that (object) on any class definition to make sure it is a new-style class.
Old-style classes (also known as...
Android: “Path for project must have only one segment”
... me it was helpful to do the following:
Run -> Run Configurations -> Select Android Application
I don't know why, but there was something called New Application...delete it....after delete everything should work fine
s...
Slow Requests on Local Flask Server
... localhost
Once I do this the latency problems go away.
I'm really digging Flask and I'm glad that it's not a problem with the framework. I knew it couldn't be.
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How to “properly” create a custom object in JavaScript?
...e result is that in mixed company you will have a mishmash of metaclasses, all behaving slightly differently. What's worse, most JavaScript tutorial material is terrible and serves up some kind of in-between compromise to cover all bases, leaving you very confused. (Probably the author is also confu...
Converting a string to a date in JavaScript
...priate library:
You can also take advantage of the library Moment.js that allows parsing date with the specified time zone.
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Unexpected value from nativeGetEnabledTags: 0
...
Goto your Logcat
In the Saved Filters part on the left, click on the Edit selected logcat filter (If Saved Filters is not visible then click on Display Saved Filters View in the Logcat)
There, in the by Log Message field, enter ^(?!.*(nativeGetEnabledTags)).*$.
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Python unit test with base and sub class
...test
class CommonTests(object):
def testCommon(self):
print 'Calling BaseTest:testCommon'
value = 5
self.assertEquals(value, 5)
class SubTest1(unittest.TestCase, CommonTests):
def testSub1(self):
print 'Calling SubTest1:testSub1'
sub = 3
sel...
Which is faster: while(1) or while(2)?
...
mov rbp, rsp
.seh_setframe rbp, 0
sub rsp, 32
.seh_stackalloc 32
.seh_endprologue
call __main
.L2:
jmp .L2
.seh_endproc
.ident "GCC: (tdm64-2) 4.8.1"
With -O1:
.file "main.c"
.intel_syntax noprefix
.def __main; .scl 2; .type 32; .end...
How to check if all elements of a list matches a condition?
...
The best answer here is to use all(), which is the builtin for this situation. We combine this with a generator expression to produce the result you want cleanly and efficiently. For example:
>>> items = [[1, 2, 0], [1, 2, 0], [1, 2, 0]]
>>...