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普通码农和CTO之间的差距，就是这7点了 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...能键盘码程序的全才。java.util.concurrent依旧经典，无论是API还是性能都叱咤风云多年屹立不倒。（只要你用线程、锁这种并发模型，java的并发库分分钟秒杀所有）
Guava，比起apachecommons包它非常现代化。google的招牌这个就不必多...
Check if application is on its first run [duplicate]
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There is no way to know that through the Android API. You have to store some flag by yourself and make it persist either in a SharedPreferenceEditor or using a database.
If you want to base some licence related stuff on this flag, I suggest you use an obfuscated preferenc...
SearchView's OnCloseListener doesn't work
...isappointing that OnCloseListener doesn't work as you'd think, this is actually a nice, clean solution. Kudos!
– welshk91
Apr 19 '16 at 0:33
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CA2202, how to solve this case
Can anybody tell me how to remove all CA2202 warnings from the following code?
12 Answers
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How can I programmatically get the MAC address of an iphone
How to programmatically get an iPhone's MAC address and IP address?
12 Answers
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android View not attached to window manager
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After a fight with this issue, I finally end up with this workaround:
/**
* Dismiss {@link ProgressDialog} with check for nullability and SDK version
*
* @param dialog instance of {@link ProgressDialog} to dismiss
*/
public void dismissProgressDialog(Progr...
How can I run code on a background thread on Android?
...e is that AsyncTasks are qeued. If you use this for a bunch of server api calls, they will not run in parallel.
– Chase Roberts
Jul 23 '18 at 15:38
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log4j logging hierarchy order
...assigns a priority/severity level to the logging message. If the logging really takes effect (the message will be visible) depends on the effective logging level of the logger being used.
– Wolf
Oct 6 '17 at 6:18
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JSON: why are forward slashes escaped?
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JSON doesn't require you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out.
Some of ...
plot a circle with pyplot
...nd the axes (but not beyond the figure, ie the figure size is not automatically adjusted to plot all of your artists).
The units for x, y and radius correspond to data units by default. In this case, I didn't plot anything on my axes (fig.gca() returns the current axes), and since the limits have n...