大约有 47,000 项符合查询结果（耗时：0.0495秒） [XML]
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
...
How to embed a video into GitHub README.md?
... links seem to be broken; they take me to github.com/contact now. Does anyone have access to an archived version? I'm having a hard time getting it out of the Google Cache or the Wayback Machine.
– Benjamin Oakes
May 2 '12 at 12:45
...
Can you overload controller methods in ASP.NET MVC?
...two methods accept different arguments. Is this something that cannot be done?
17 Answers
...
How to sort Map values by key in Java?
...ation order.... why not we using LinkedHashSet ? We just put the questions one by one, and it is getting ordered by the order of the insertation. Can some help me out with this ?
– Karoly
Jun 19 '15 at 13:15
...
Python nested functions variable scoping [duplicate]
...
Rather than declaring a special object or map or array,
one can also use a function attribute.
This makes the scoping of the variable really clear.
def sumsquares(x,y):
def addsquare(n):
sumsquares.total += n*n
sumsquares.total = 0
addsquare(x)
addsquare(y)
return ...
How do I select elements of an array given condition?
... I get "ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()"
– ru111
Dec 7 '17 at 20:15
...
Android Studio: Add jar as library?
...e four, it started working fine. I think the 'Add as library' step was the one I'd previously missed, and it didn't work until I cleaned it either.
[Edit - added the build.gradle step which is also necessary as others have pointed out]
...
Difference between binary tree and binary search tree
Can anyone please explain the difference between binary tree and binary search tree with an example ?
12 Answers
...
Cannot delete directory with Directory.Delete(path, true)
...reas of the machine that are allowed to be deleted because do you want someone to call this function on C:\WINDOWS (%WinDir%) or C:\.
share
|
improve this answer
|
follow
...
Empty arrays seem to equal true and false at the same time
...because toString called on Array returns Array.join(), and empty string is one of falsy values in JavaScript.
share
|
improve this answer
|
follow
|
...