大约有 42,000 项符合查询结果（耗时：0.0694秒） [XML]
How do I add more members to my ENUM-type column in MySQL?
...
Most ALTER TABLE commands will completely rewrite the whole table. Is mysql clever enough to not do that with enum ?
– John
Oct 9 '18 at 22:10
...
What is the performance cost of having a virtual method in a C++ class?
...any of its parent classes) means that the class will have a virtual table, and every instance will have a virtual pointer.
...
How does Duff's device work?
I've read the article on Wikipedia on the Duff's device , and I don't get it. I am really interested, but I've read the explanation there a couple of times and I still don't get it how the Duff's device works.
...
A html space is showing as %2520 instead of %20
... as %25.
The way you get %2520 is when your url already has a %20 in it, and gets urlencoded again, which transforms the %20 to %2520.
Are you (or any framework you might be using) double encoding characters?
Edit:
Expanding a bit on this, especially for LOCAL links. Assuming you want to link t...
Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
Below is the error message I receive in the debug area. It runs fine and nothing is wrong except that I receive this error. Would this prevent apple accepting the app? How do I fix it?
...
wget/curl large file from google drive
I'm trying to download a file from google drive in a script, and I'm having a little trouble doing so. The files I'm trying to download are here .
...
How do I find which program is using port 80 in Windows? [duplicate]
...
Start menu → Accessories → right click on "Command prompt". In the menu, click "Run as Administrator" (on Windows XP you can just run it as usual), run netstat -anb, and then look through output for your program.
BTW, Skype by default tries to use ports 80 and 443 for i...
Go to particular revision
...repository of a certain project. Can I turn the files to the initial state and when I review the files go to revision 2, 3, 4 ... most recent? I'd like to have an overview of how the project was evolving.
...
Strip HTML from strings in Python
...e, I'm trying to find a way to only show the contents of each HTML element and not the formatting itself. If it finds '<a href="whatever.com">some text</a>' , it will only print 'some text', '<b>hello</b>' prints 'hello', etc. How would one go about doing this?
...
How to pretty-print a numpy.array without scientific notation and with given precision?
...printoptions to set the precision of the output:
import numpy as np
x=np.random.random(10)
print(x)
# [ 0.07837821 0.48002108 0.41274116 0.82993414 0.77610352 0.1023732
# 0.51303098 0.4617183 0.33487207 0.71162095]
np.set_printoptions(precision=3)
print(x)
# [ 0.078 0.48 0.413 0.83 ...