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How does the “final” keyword in Java work? (I can still modify an object.)
...antee about the consistency of final fields of an object. For example, the ARM processor must use an explicit memory barrier instruction on the end of each constructor of a class which has final fields. On other processors this is not needed, however.
– Marko Topolnik
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Why is whitespace sometimes needed around metacharacters?
A few months ago I tattooed a fork bomb on my arm, and I skipped the whitespaces, because I think it looks nicer without them. But to my dismay, sometimes (not always) when I run it in a shell it doesn't start a fork bomb, but it just gives a syntax error.
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Turn off constraints temporarily (MS SQL)
...HAVEN'T broken your relationships and introduced orphans, once you have re-armed your checks, i.e.
ALTER TABLE foo CHECK CONSTRAINT ALL
or
ALTER TABLE foo CHECK CONSTRAINT FK_something
then you can run back in and do an update against any checked columns like so:
UPDATE myUpdatedTable SET som...
When to use reinterpret_cast?
...n. Your code has to be generic and works properly on big endian (e.g. some ARM) and little endian (e.g. x86) systems. So you have to check the byte order. It is well-known on compile time so you can write constexpr function: You can write a function to achieve this:
/*constexpr*/ bool is_little_end...
When to use os.name, sys.platform, or platform.system?
...k on a similar untested system (e.g. untested Mac - 'posix' or on embedded ARM systems). More pythonic is to not enumerate all known systems but to test possible relevant properties. (e.g. it is considered important the endianess of the system but unimportant multiprocessing properties.)
os.name i...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
【内核源码】linux UDP实现linux-udp创建udp socket在socket()创建的时候，会设置对应协议的操作集。 inet_dgram_ops是系统调用层直接调用的操作。udp_prot是底层协议的处理。可以看到相比TCP，UDP不用accept(),lis 创建udp socket
在socket()创建...
Java 7 language features with Android
...he module at the 2nd pane) → Language level → (choose "7.0 - Diamonds, ARM, multi-catch, etc.")
This only allows Java 7 language features, and you can hardly benefit from anything since a half of improvement also comes from the library. Features you could use are those which do not depend on...
Visual Studio support for new C / C++ standards?
... least attempts to deliver compatibility: IBM, HP, Apple, Intel, GNU, Sun, ARM, innumerable embedded device compilers, etc. C99 may not be important to Windows programmers, but Windows programs represent a tiny fraction of the total code written.
– Stephen Canon
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Parse usable Street Address, City, State, Zip from a string [closed]
...ithin the domain of United States Postal Service, 65 if you count American armed forces. usps.com/send/official-abbreviations.htm
– Mike Sherrill 'Cat Recall'
Jul 26 '11 at 21:48
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Turn a simple socket into an SSL socket
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I have used similar code on multiple platforms: arm, linux and windows.
– CaptainBli
Sep 15 '13 at 16:11
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