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Is Meyers' implementation of the Singleton pattern thread safe?
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In C++11, it is thread safe. According to the standard, §6.7 [stmt.dcl] p4:
If control enters
the declaration concurrently while the variable is being initialized, the concurrent execution shall wait for completion of the initialization.
GCC and VS support for the feature (Dynamic Initiali...
*.h or *.hpp for your class definitions
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549
Here are a couple of reasons for having different naming of C vs C++ headers:
Automatic code ...
SQL server query to get the list of columns in a table along with Data types, NOT NULL, and PRIMARY
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487
To avoid duplicate rows for some columns, use user_type_id instead of system_type_id.
SELECT ...
Emacs, switch to previous window
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edited Jan 23 '13 at 23:54
Trey Jackson
69.4k1010 gold badges181181 silver badges214214 bronze badges
a...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...8 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
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Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...8 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
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Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...8 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
...
C++11 rvalues and move semantics confusion (return statement)
...tor<int> return_vector(void)
{
std::vector<int> tmp {1,2,3,4,5};
return tmp;
}
std::vector<int> &&rval_ref = return_vector();
The first example returns a temporary which is caught by rval_ref. That temporary will have its life extended beyond the rval_ref definiti...
Why does C++11 not support designated initializer lists as C99? [closed]
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answered Sep 11 '13 at 2:42
bames53bames53
77k1111 gold badges153153 silver badges215215 bronze badges
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MySQL JOIN the most recent row only?
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147
You may want to try the following:
SELECT CONCAT(title, ' ', forename, ' ', surname) AS nam...