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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...网络状态判断。
在网络应用传输中使用高效率的数据格式和解析方法，譬如JSON等。
在传输用户反馈或者下载OTA升级包等不是十分紧急的操作时尽量采用压缩数据进行传输且延迟到设备充电和WIFI状态时进行。
在有必...
动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...数名、变量名、类型名之类。Linux 世界常见的调试符号的格式称为 DWARF（与英文单词“矮人”相同）。正是因为有了这些调试符号，我们在冰冷黑暗的二进制世界里面才有了一张地图，才有了一座灯塔，才可能去解释和还原这个...
Regular expression that matches valid IPv6 addresses
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254
I was unable to get @Factor Mystic's answer to work with POSIX regular expressions, so I wrote ...
What is the ultimate postal code and zip regex?
...e IMO. But you would still be missing on the validation part: Zip code 12345 may exist, but 12346 not, maybe 12344 doesn't exist either. How do you check for that with a regex?
You can't.
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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
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RUN_GTEST(ArrayTest, NormalExample, @);
array<int, 5> a = { 1, 2, 3 };
psln(a.size()); // a.size() = 5;
psln(a.max_size()); // a.max_size() = 5;
EXPECT_FALSE(a.empty()); // empty() is false.
printContainer(a, "array: "); ...
What are the differences between json and simplejson Python modules?
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wim
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answered Apr 3 '09 at 6:59
Devin JeanpierreDevin Jeanpierre
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Regular expression for matching HH:MM time format
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375
Your original regular expression has flaws: it wouldn't match 04:00 for example.
This may work ...
Validating IPv4 addresses with regexp
...dation, but without much luck. It seemed at one point I had had it with (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?(\.|$)){4} , but it produces some strange results:
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How do you detect Credit card type based on number?
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+50
The credit/debit card number is referred to as a PAN, or Primary Account Number. The first six digits of the PAN are taken from the ...
Applying a function to every row of a table using dplyr?
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alexwhanalexwhan
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