大约有 47,000 项符合查询结果（耗时：0.0590秒） [XML]
How can I add to List
...;? extends Number> foo3 means that the variable foo3 can hold any value from a family of types (rather than any value of a specific type). It means that any of these are legal assignments:
List<? extends Number> foo3 = new ArrayList<Number>; // Number "extends" Number
List<? exte...
How do I unload (reload) a Python module?
...dy been imported by using the reload builtin function (Python 3.4+ only):
from importlib import reload
import foo
while True:
# Do some things.
if is_changed(foo):
foo = reload(foo)
In Python 3, reload was moved to the imp module. In 3.4, imp was deprecated in favor of importli...
Is it possible to set the equivalent of a src attribute of an img tag in CSS?
...'Save image'. This is because assigning a content effectively converts img from empty replaced element to something like <span><img></span>.
– Ilya Streltsyn
Jul 14 '13 at 22:55
...
Why is 1/1/1970 the “epoch time”?
...pears in some software
interfaces as a result. The epoch also
differed from the current value. The
first edition Unix Programmer's Manual
dated November 3, 1971 defines the
Unix time as "the time since 00:00:00,
Jan. 1, 1971, measured in sixtieths of
a second".
...
ACE vs Boost vs POCO [closed]
...a problem for Boost.
I never used ACE, so I can't really comment on it. From what I've heard, people find POCO more modern and easier to use than ACE.
Some answers to the comments by Rahul:
I don't know about versatile and advanced. The POCO thread library provides some functionality that is ...
How do I simulate a low bandwidth, high latency environment?
...ce pane is part of the Hardware IO Tools for XCode, which you can download from developer.apple.com/downloads
– avernet
Feb 4 '13 at 19:10
...
Is there a standard for storing normalized phone numbers in a database?
...ng. It would be helpful if you could post a link to the standards document from which your derive your information, or explain why E.164 does not apply.
– Abtin Forouzandeh
Jul 27 '09 at 22:36
...
How to close IPython Notebook properly?
...
There still isn't a way to shut it down from inside the notebook UI, but I wrote nbmanager, a tool that can list and kill notebook servers and kernels.
– Thomas K
Dec 28 '14 at 11:21
...
Why use Ruby's attr_accessor, attr_reader and attr_writer?
...tten assuming that age, once set, does not change, then a bug could result from code calling that mutator.
But what is happening behind the scenes?
If you write:
attr_writer :age
That gets translated into:
def age=(value)
@age = value
end
If you write:
attr_reader :age
That gets transla...
How do I measure time elapsed in Java? [duplicate]
...o a different core partway through, you will end up with a start timestamp from core 1 and a end timestamp from core 2 but they might not be the same time (you can even get negative values) - some examples: stackoverflow.com/questions/510462/… is a good e
– jasonk
...