大约有 44,000 项符合查询结果（耗时：0.0762秒） [XML]
What's the difference between `1L` and `1`?
...uses 8 bytes per element. An integer vector uses only 4 bytes per element. For large vectors, that's less wasted memory and less to wade through for the CPU (so it's typically faster).
Mostly this applies when working with indices.
Here's an example where adding 1 to an integer vector turns it into...
Should I use an exception specifier in C++?
...unction may or may not throw an exception by using an exception specifier. For example:
14 Answers
...
App Inventor 2 扩展 · App Inventor 2 中文网
...7, 2021
sample extensions are at: MIT App Inventor Extension
source code for sample extensions at: http://appinventor.mit.edu/extensions
Appinventor help: https://community.appinventor.mit.edu/
Note: App Inventor extensions are supported only on Android devices running API Level 8 (Android sys...
Minimal web server using netcat
...al web server using netcat (nc). When the browser calls up localhost:1500, for instance, it should show the result of a function ( date in the example below, but eventually it'll be a python or c program that yields some data).
My little netcat web server needs to be a while true loop in bash, poss...
PostgreSQL - Rename database
...astly, try posting the error message it returns so we can get a bit more information.
share
|
improve this answer
|
follow
|
...
How to differentiate between time to live and time to idle in ehcache
...conds = 3. Then the object will be invalidated if it hasn't been requested for 4 seconds.
If timeToLiveSeconds = 90, then the object will be removed from cache after 90 seconds, even if it has been requested few milliseconds in the 90th second of its short life.
...
recursively add file extension to all files
...o all the files contained within these directories. I've seen bash scripts for changing the file extension but not for just adding one. It also needs to be recursive, can someone help please?
...
How can I extract the folder path from file path in Python?
...nction to do this, you just need to pass the string, and it'll do the work for you. Since, you seem to be on windows, consider using the abspath function too. An example:
>>> import os
>>> os.path.dirname(os.path.abspath(existGDBPath))
'T:\\Data\\DBDesign'
If you want both the f...
How can I make a JUnit Test wait?
I have a JUnit test that I want to have wait for a period of time, synchronously. My JUnit test looks like this:
6 Answers
...
Calculating how many minutes there are between two times
...
@tjmoore thanks for the feedback, I agree with you. I answered the original question back in Jan 2012, after which the question was edited. I occasionally get downvotes for this answer, probably because most people are reading the answer 5 y...