大约有 40,000 项符合查询结果（耗时：0.0747秒） [XML]
How big can a MySQL database get before performance starts to degrade
At what point does a MySQL database start to lose performance?
15 Answers
15
...
Define: What is a HashSet?
HashSet
The C# HashSet data structure was introduced in the .NET Framework 3.5. A full list of the implemented members can be found at the HashSet MSDN page.
...
Create folder with batch but only if it doesn't already exist
...u just use this: if not exist "C:\VTS\" mkdir C:\VTS it wll create a directory only if the folder does not exist.
Note that this existence test will return true only if VTS exists and is a directory. If it is not there, or is there as a file, the mkdir command will run, and should cause an error. ...
Why should I use the keyword “final” on a method parameter in Java?
I can't understand where the final keyword is really handy when it is used on method parameters.
12 Answers
...
How to delete the contents of a folder?
...
import os, shutil
folder = '/path/to/folder'
for filename in os.listdir(folder):
file_path = os.path.join(folder, filename)
try:
if os.path.isfile(file_path) or os.path.islink(file_path):
os.unlink(fi...
Creating a byte array from a stream
What is the prefered method for creating a byte array from an input stream?
16 Answers
...
Make sure only a single instance of a program is running
...
The following code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version is available sing...
Java 8 stream's .min() and .max(): why does this compile?
Note: this question originates from a dead link which was a previous SO question, but here goes...
5 Answers
...
400 vs 422 response to POST of data
I'm trying to figure out what the correct status code to return on different scenarios with a "REST-like" API that I'm working on. Let's say I have a end point that allows POST'ing purchases in JSON format. It looks like this:
...
Representational state transfer (REST) and Simple Object Access Protocol (SOAP)
... what is REST and what is SOAP in plain english? And how Web Services work?
14 Answers
...