大约有 42,000 项符合查询结果（耗时：0.0524秒） [XML]
Getting a better understanding of callback functions in JavaScript
...
Why do you cast callback to string and then check its type? Will this enhance performance? This is like checking the type, checking if the converted boolean returns true and then checking its type again and testing it against the string...
Installing PG gem on OS X - failure to build native extension
...
Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
Install another build of Xcode Tools (typing brew update in the terminal will p...
How to dynamically create generic C# object using reflection? [duplicate]
...from Item
task.Process(new Item());
In any case, you won't be statically cast to a type you don't know beforehand ("makeme" in this case). ITask allows you to get to your target type.
If this is not what you want, you'll probably need to be a bit more specific in what you are trying to achieve wi...
Excluding directories in os.walk
I'm writing a script that descends into a directory tree (using os.walk()) and then visits each file matching a certain file extension. However, since some of the directory trees that my tool will be used on also contain sub directories that in turn contain a LOT of useless (for the purpose of thi...
Create empty file using python [duplicate]
...fter the open() statement finished - but it's cleaner to do it explicitely and relying on CPython-specific behaviour is not good either.
In case you want touch's behaviour (i.e. update the mtime in case the file exists):
import os
def touch(path):
with open(path, 'a'):
os.utime(path, N...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
I was watching this , and, as you can see, the first command I am told to put in is:
5 Answers
...
Conditional import of modules in Python
...mport simplejson as json as it is likely a newer (faster) version of the standard json module.
– Seppo Erviälä
Oct 20 '12 at 17:07
...
Automatically remove Subversion unversioned files
...The other solution from bellow svn cleanup --remove-unversioned is better. And it is for Subversion 1.9.0 (this version is from 2015). It is stable and standar.
– tres.14159
Nov 21 '18 at 8:19
...
Correct approach to global logging in Golang
...
Create a single log.Logger and pass it around?
That is possible. A log.Logger can be used concurrently from multiple goroutines.
Pass around a pointer to that log.Logger?
log.New returns a *Logger which is usually an indication that yo...
How do I check OS with a preprocessor directive?
...them, with links to where they're found:
Windows
_WIN32 Both 32 bit and 64 bit
_WIN64 64 bit only
Unix (Linux, *BSD, Mac OS X)
See this related question on some of the pitfalls of using this check.
unix
__unix
__unix__
Mac OS X
__APPLE__
__MACH__
Both are defined; checking for eith...