大约有 40,000 项符合查询结果（耗时：0.0290秒） [XML]
How can I parse a YAML file in Python
...d via pip install pyyaml:
#!/usr/bin/env python
import yaml
with open("example.yaml", 'r') as stream:
try:
print(yaml.safe_load(stream))
except yaml.YAMLError as exc:
print(exc)
And that's it. A plain yaml.load() function also exists, but yaml.safe_load() should always be ...
Multiprocessing: How to use Pool.map on a function defined in a class?
...
I also was annoyed by restrictions on what sort of functions pool.map could accept. I wrote the following to circumvent this. It appears to work, even for recursive use of parmap.
from multiprocessing import Process, Pipe
from itertools import izip
def spawn(f):
def fu...
Tree view of a directory/folder in Windows? [closed]
...e "tree /F" to view a tree of the current folder and all descending files & folders.
In File Explorer under Windows 8.1:
Select folder
Press Shift, right-click mouse, and select "Open command window here"
Type tree /f > tree.txt and press Enter
Use MS Word to open "tree.txt"
The dialog box...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...ent types are defined in the namespace of the function.
A simple code example:
namespace MyNamespace
{
class MyClass {};
void doSomething(MyClass);
}
MyNamespace::MyClass obj; // global object
int main()
{
doSomething(obj); // Works Fine - MyNamespace::doSomething() is called...
PHP Constants Containing Arrays?
...
NOTE: while this is the accepted answer, it's worth noting that in PHP 5.6+ you can have const arrays - see Andrea Faulds' answer below.
You can also serialize your array and then put it into the constant:
# define constant, serialize array
define ("FRUITS", serialize (array ("apple", "che...
apc vs eaccelerator vs xcache
...
APC is going to be included in PHP 6, and I'd guess it has been chosen for good reason :)
It's fairly easy to install and certainly speeds things up.
share
|
...
Difference between Python's Generators and Iterators
...ry generator is an iterator, but not vice versa. A generator is built by calling a function that has one or more yield expressions (yield statements, in Python 2.5 and earlier), and is an object that meets the previous paragraph's definition of an iterator.
You may want to use a custom iterator, ra...
Free space in a CMD shell
...
Using this command you can find all partitions, size & free space: wmic logicaldisk get size, freespace, caption
share
|
improve this answer
|
follow...
PHP, get file name without file extension
I have this PHP code:
17 Answers
17
...
Difference between “include” and “require” in php
...
You find the differences explained in the detailed PHP manual on the page of require:
require is identical to include except upon failure it will also produce a fatal E_COMPILE_ERROR level error. In other words, it will halt the script whereas include only emits a warning...