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Node.js getaddrinfo ENOTFOUND
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This is a more general error than the one discussed.
– shaunakde
May 3 '15 at 12:53
5
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calculating the difference in months between two dates
...rk.
For example, should dates like July 5, 2009 and August 4, 2009 yield one month or zero months difference? If you say it should yield one, then what about July 31, 2009 and August 1, 2009? Is that a month? Is it simply the difference of the Month values for the dates, or is it more related to a...
Find region from within an EC2 instance
... use it. I have the following code which seems to work though:
EC2_AVAIL_ZONE=`curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone`
EC2_REGION="`echo \"$EC2_AVAIL_ZONE\" | sed 's/[a-z]$//'`"
Hope this helps.
EDIT: Improved sed based on comments
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Swapping column values in MySQL
...able schema at the end of the post. This method doesn't swap the values if one of them is NULL. Use method #3 that doesn't have this limitation.
UPDATE swap_test SET x=y, y=@temp WHERE (@temp:=x) IS NOT NULL;
This method was offered by Dipin in, yet again, the comments of http://beerpla.net/2009/02...
Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
...ues trying to adapt it to my case. I have various li and inside on of each one there is a .block and a .block h2 and I need to apply this to the h2 inside .block but I couldn't get it to work. Is it any diferent if there are more than one .block h2?
– Alex
Jan ...
Difference between `data` and `newtype` in Haskell
...ay,
data Maybe a = Nothing
| Just a
since it has more than one constructor. Nor can you write
newtype Book = Book Int Int
Strictness
The fact that the constructor is erased leads to some very subtle differences in strictness between data and newtype. In particular, data introduce...
How to use php serialize() and unserialize()
...aracters "elem 1"... And what example are you asking for, I thought I gave one?
– deceze♦
Dec 27 '11 at 7:44
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namedtuple and default values for optional keyword arguments
...'left', 'right')
>>> Node = namedtuple('Node', fields, defaults=(None,) * len(fields))
>>> Node()
Node(val=None, left=None, right=None)
Or better yet, use the new dataclasses library, which is much nicer than namedtuple.
>>> from dataclasses import dataclass
>>>...
Get the last item in an array
... @mvmn i did a benchmark a long time ago, throughput was around one or two million calls per second on a single 2.4ghz thread. so unless you have solve problems you shouldn't solve in JS anyways, it won't be noticable (iirc slowdown compared to arr[arr.length-1] was 50-100x)
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Fatal error: Maximum execution time of 30 seconds exceeded
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Is this set only for that one script or will it affect all other scripts executed after this one on the same server?
– Nagendra Rao
Nov 22 '13 at 11:47
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