大约有 40,100 项符合查询结果（耗时：0.1265秒） [XML]
When should TaskCompletionSource be used?
...
234
I mostly use it when only an event based API is available (for example Windows Phone 8 sockets):...
How to sleep for five seconds in a batch file/cmd [duplicate]
...MultiplyByZer0
3,73333 gold badges2727 silver badges4646 bronze badges
answered Nov 4 '09 at 8:20
MartinMartin
35.2k2020 gold badg...
Which HTML5 tag should I use to mark up an author’s name?
...
114
Both rel="author" and <address> are designed for this exact purpose. Both are supported in...
How to generate a range of numbers between two numbers?
...
164
Select non-persisted values with the VALUES keyword. Then use JOINs to generate lots and lots of...
Is there a simple way to delete a list element by value?
...element. Use a list comprehension for that.
>>> a = [10, 20, 30, 40, 20, 30, 40, 20, 70, 20]
>>> a = [x for x in a if x != 20]
>>> print(a)
[10, 30, 40, 30, 40, 70]
share
|
...
Converting string to Date and DateTime
...
493
Use strtotime() on your first date then date('Y-m-d') to convert it back:
$time = strtotime('...
How to read and write excel file
...
145
Try the Apache POI HSSF. Here's an example on how to read an excel file:
try {
POIFSFileSy...
get all keys set in memcached
... to get the slab ids:
stats items
STAT items:3:number 1
STAT items:3:age 498
STAT items:22:number 1
STAT items:22:age 498
END
The first number after ‘items’ is the slab id. Request a cache dump for each slab id, with a limit for the max number of keys to dump:
stats cachedump 3 100
ITEM vi...
Convert to binary and keep leading zeros in Python
...
Use the format() function:
>>> format(14, '#010b')
'0b00001110'
The format() function simply formats the input following the Format Specification mini language. The # makes the format include the 0b prefix, and the 010 size formats the output to fit in 10 charac...
Python memoising/deferred lookup property decorator
...dproperty
class Foo(object):
def __init__(self):
self.value = 4
@cachedproperty
def cached_prop(self):
self.value += 1
return self.value
f = Foo()
print(f.value) # initial value
print(f.cached_prop) # cached property is calculated
f.value = 1
print(f.cached_...