大约有 2,340 项符合查询结果（耗时：0.0209秒） [XML]
What is more efficient? Using pow to square or just multiply it with itself?
..., as I thought it would. I guess since errno is a global, thread safety requires that it call pow to possibly set errno multiple times... exp=1 and exp=2 are fast because the pow call is hoisted out of the loop with just -O3.. (with -ffast-math, it does the sum-of-8 outside the loop, too.)
...
Python: how to print range a-z?
...k l m n
>>> print(" ".join(small_letters[0::2]))
a c e g i k m o q s u w y
>>> s = small_letters[0:(ord('n')-ord('a')+1):2]
>>> print(" ".join(s))
a c e g i k m
>>> urls = ["hello.com/", "hej.com/", "hallo.com/"]
>>> print([x + y for x, y in zip(urls, ...
How to view method information in Android Studio?
...X, Android Studio > Preferences > Editor > General and check Show quick documentation on mouse move:
Other ways:
You can go into your IntelliJ's bin folder and search for idea.properties. Add this line to the document:
auto.show.quick.doc=true
Now you'll have the same floating docs w...
Grep and Sed Equivalent for XML Command Line Processing
...
Doesn't support XQuery though, as far as I can tell.
– Steve Bennett
Jun 9 '11 at 1:14
...
How to get the instance id from within an ec2 instance?
...
See the EC2 documentation on the subject.
Run:
wget -q -O - http://169.254.169.254/latest/meta-data/instance-id
If you need programatic access to the instance ID from within a script,
die() { status=$1; shift; echo "FATAL: $*"; exit $status; }
EC2_INSTANCE_ID="`wget -q -O - ...
In Vim, is there a way to paste text in the search line?
...
I was looking for this answer when I searched for this question in google, I wonder why this has negative votes.
– santiago arizti
Oct 6 '17 at 15:03
add a...
How to make the division of 2 ints produce a float instead of another int?
...rators, so let it stand here for future reference.
– quantum
May 2 '11 at 8:39
5
...
Use a URL to link to a Google map with a marker on it
... can use the following URL:
https://www.google.com/maps/search/?api=1&query=36.26577,-92.54324
For further details please read aforementioned documentation.
You can also file feature requests for this API in Google issue tracker.
Hope this helps!
...
Case insensitive Query with Spring CrudRepository
With Spring CrudRepository Query; I want to select "DeviceType" entities with it's "name" property. But following query select the entitles on case sensitive manner. How I make it case insensitive way. Thanks.
...
How to keep environment variables when using sudo
... export HTTP_PROXY=foof
$ sudo -E bash -c 'echo $HTTP_PROXY'
Here is the quote from the man page:
-E, --preserve-env
Indicates to the security policy that the user wishes to preserve their
existing environment variables. The security policy may return an error
...