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Best way to create unique token in Rails?
...easurement protocol. It's supposed to be a UUID, but I just take the first 32 chars of the hexdigest for any given IP.
– thekingoftruth
Jan 16 '15 at 19:22
1
...
Is the size of C “int” 2 bytes or 4 bytes?
...rs were 16 bit, an int was 2 bytes. Nowadays, it's most often 4 bytes on a 32-bit as well as 64-bit systems.
Still, using sizeof(int) is the best way to get the size of an integer for the specific system the program is executed on.
EDIT: Fixed wrong statement that int is 8 bytes on most 64-bit sy...
How do I check if I'm running on Windows in Python? [duplicate]
...
Martin BeckettMartin Beckett
88.4k2323 gold badges175175 silver badges248248 bronze badges
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C/C++ NaN constant (literal)?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
修改ORALCE 字符集从American_American.ZHS16GBK 到SIMPLIFIED CHINESE_CHI...
...UTF8字符集，应用部门的同事要求使用ZHS16GBK字符集，因为是新库 ，干脆删了重建，避免以后的不可预知...原来数据库创建的时候默认选着了AL32UTF8字符集，应用部门的同事要求使用 ZHS16GBK字符集，
因为是新库 ，干脆删了重建，...
memcpy() 是非线程安全的，并发时需加锁或使用原子操作 - C/C++ - 清泛网 -...
memcpy() 是非线程安全的，并发时需加锁或使用原子操作memcpy_thread_unsafe最近调查线上一个问题，就是一块 int32 的内存会极低概率出现 -18亿的巨数字，有时又是正确的。自己刻意测试又不能再现，在确认不可能将这样一个巨量数...
Change IPython/Jupyter notebook working directory
...perties"
Set the shortcut properties to:
Target:
C:\Windows\System32\cmd.exe /k "cd C:\fake\example\directory & C: & ipython notebook --pylab inline"
Start in:
C:\fake\example\directory\
(Note the added slash at the end of "start in")
This runs windows command line, changes to your wor...
SSL certificate rejected trying to access GitHub over HTTPS behind firewall
...ed on your system. And these certs cannot be installed with cygwin's setup.exe.
Update: Install Net/ca-certificates package in cygwin (thanks dirkjot)
There are two solutions:
Actually install root certificates. Curl guys extracted for you certificates from Mozilla.
cacert.pem file is what yo...
How to make rpm auto install dependencies
...ke me ;-)
– Tricky
Mar 14 '18 at 10:32
1
@Max13, that's yum localinstall and it is the same as th...
How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
...t. However the C++ committee chose to ignore the suggestion: e.g. in the n3242 draft, 27.9.2/3: Note: The macros defined by <cinttypes> are provided unconditionally. In particular, the symbol __STDC_FORMAT_MACROS, mentioned in footnote 182 of the C standard, plays no role in C++. So when the...