大约有 38,000 项符合查询结果（耗时：0.0586秒） [XML]
iPhone App Icons - Exact Radius?
...
|
show 6 more comments
285
...
Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
...from the official developer documentation . (See Why doesn't Android use more enums? for the old section content)
6 Answ...
Xcode “Build and Archive” from command line
...
|
show 11 more comments
284
...
Using tags in the with other HTML
...
|
show 14 more comments
68
...
Using a ListAdapter to fill a LinearLayout inside a ScrollView layout
...s), but suffers from performance problems, so if you have like 50 views or more, I advise to use the header approach.
Example. Basically the activity (or fragment) layout transforms to something like this (no ScrollView needed anymore):
<ListView xmlns:android="http://schemas.android.com/apk/re...
Remove substring from the string
...ice! "foo"
=> "foo"
a
=> "bar"
there is a non '!' version as well. More info can be seen in the documentation about other versions as well:
http://www.ruby-doc.org/core/classes/String.html#method-i-slice-21
share
...
What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...; /bin/rm -f /var/run/my.lock" 0 1 2 3 13 15 You can search /usr/bin/* for more examples.
– Shannon Nelson
Nov 12 '09 at 4:07
8
...
multiprocessing: sharing a large read-only object between processes?
...ed buffers between the processes.
Solution 2
In some cases, you have a more complex structure – often a "fan-out" structure. In this case you have a parent with multiple children.
Parent opens source data. Parent forks a number of children.
Parent reads source, farms parts of the source ou...
Does Python support multithreading? Can it speed up execution time?
...ll switches between threads.
What the GIL prevents then, is making use of more than one CPU core or separate CPUs to run threads in parallel.
This only applies to Python code. C extensions can and do release the GIL to allow multiple threads of C code and one Python thread to run across multiple c...
Loop through all nested dictionary values?
...uations. This is not empty syntactic sugar; it may lead to faster code and more sensible interactions with coroutines.
from collections import abc
def nested_dict_iter(nested):
for key, value in nested.items():
if isinstance(value, abc.Mapping):
yield from nested_dict_iter(v...