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Why would one use nested classes in C++?
Can someone please point me towards some nice resources for understanding and using nested classes? I have some material like Programming Principles and things like this IBM Knowledge Center - Nested Classes
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ElasticSearch: Unassigned Shards, how to fix?
...if you've disabled shard allocation (perhaps you did a rolling restart and forgot to re-enable it), you can re-enable shard allocation.
# v0.90.x and earlier
curl -XPUT 'localhost:9200/_settings' -d '{
"index.routing.allocation.disable_allocation": false
}'
# v1.0+
curl -XPUT 'localhost:9200/_...
git rebase without changing commit timestamps
Would it make sense to perform git rebase while preserving the commit timestamps?
5 Answers
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How to drop column with constraint?
...offers drop column checkin
But the error may appear from other reasons - for example the user defined function or view with SCHEMABINDING option set for them.
UPD:
Completely automated dropping of constraints script:
DECLARE @sql NVARCHAR(MAX)
WHILE 1=1
BEGIN
SELECT TOP 1 @sql = N'alter tabl...
“Too many values to unpack” Exception
... tuple has too many values with respect to the number of target variables. For example: this work, and prints 1, then 2, then 3
def returnATupleWithThreeValues():
return (1,2,3)
a,b,c = returnATupleWithThreeValues()
print a
print b
print c
But this raises your error
def returnATupleWithThree...
Calculate difference in keys contained in two Python dictionaries
...elf.set_past - self.intersect
def changed(self):
return set(o for o in self.intersect if self.past_dict[o] != self.current_dict[o])
def unchanged(self):
return set(o for o in self.intersect if self.past_dict[o] == self.current_dict[o])
Here is some sample output:
>>...
How to connect android emulator to the internet
...answers may have addressed this, however obliquely, but here's what worked for me.
Assuming your problem is occurring when you're on a wireless network and you have a LAN card installed, the issue is that the emulator tries to obtain its DNS settings from that LAN card. Not a problem when you're co...
Styling Google Maps InfoWindow
...xtends the GOverlay class from the Google Maps API and uses this as a base for creating a more flexible info window. It first creates the class:
/* An InfoBox is like an info window, but it displays
* under the marker, opens quicker, and has flexible styling.
* @param {GLatLng} latlng Point to pl...
How to “EXPIRE” the “HSET” child key in redis?
...
This is not possible, for the sake of keeping Redis simple.
Quoth Antirez, creator of Redis:
Hi, it is not possible, either use a different top-level key for that
specific field, or store along with the filed another field with an
expire ...
Should I use 'has_key()' or 'in' on Python dicts?
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As an addition, in Python 3, to check for the existence in values, instead of the keys, try >>> 1 in d.values()
– riza
Aug 24 '09 at 18:12
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