大约有 40,000 项符合查询结果（耗时：0.0660秒） [XML]
ReactJS: Modeling Bi-Directional Infinite Scrolling
...not prudent to load them all into the browser, so I am doing async fetches from time to time. For some reason, on occasion when I scroll and position jumps very far (say I go off the screen and back), the ListBody doesn't re-render, even though the state changes. Any ideas why this might be? Great e...
using awk with column value conditions
I'm learning awk from The AWK Programming Language and I have a problem with one of the examples.
6 Answers
...
Java rounding up to an int using Math.ceil
... don't want floor(a/b), but ceil(a/b), and using the definitions and plots from Wikipedia:
With these plots of the floor and ceil function you can see the relationship.
You can see that floor(x) <= ceil(x). We need floor(x + s) = ceil(x). So we need to find s. If we take 1/2 <= s < 1 it ...
Fatal error: use of unimplemented initializer 'init(coder:)' for class
...ntroller. That method is required because instantiating a UIViewController from a UIStoryboard calls it.
To see how we initialize a UIViewController from a UIStoryboard, please take a look here
Why is this not a problem with Objective-C?
Because Objective-C automatically inherits all the required UI...
Is it considered acceptable to not call Dispose() on a TPL Task object?
... It goes against the MSDN documentation though. Is there any official word from MS or the .net team that this is acceptable code. There is also the point raised at the end of that discussion that "what if the implementation changes in a future version"
– Simon P Stevens
...
Git Blame Commit Statistics
...ic of how much lines (of code) are currently in the repository originating from each committer?
13 Answers
...
Should everything really be a bundle in Symfony 2.x?
...del outside of any bundle, I've changed the doctrine section in config.yml from
doctrine:
# ...
orm:
# ...
auto_mapping: true
to
doctrine:
# ...
orm:
# ...
mappings:
model:
type: annotation
dir: %kernel.root...
Python multiprocessing PicklingError: Can't pickle
... multiple argument functions, as you need for class methods.
>>> from pathos.multiprocessing import ProcessingPool as Pool
>>> p = Pool(4)
>>> class Test(object):
... def plus(self, x, y):
... return x+y
...
>>> t = Test()
>>> p.map(t.plus, x, y)...
How to get the start time of a long-running Linux process?
... with formatters to get PID, command run, and date+time started.
Example (from Debian/Jessie command line)
$ ps -eo pid,lstart,cmd
PID CMD STARTED
1 Tue Jun 7 01:29:38 2016 /sbin/init
2 Tue Jun 7 01:29:38 2016 [kthreadd] ...
How to match a String against string literals in Rust?
...
It doesn't work. It can only match _ if I get String from read_line.
– Masked Man
Nov 26 '16 at 10:20
...