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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 (Dy...
How to declare an array in Python?
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answered Oct 3 '09 at 19:07
sepp2ksepp2k
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How to find topmost view controller on iOS
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78
iOS 4 introduced the rootViewController property on UIWindow:
[UIApplication sharedApplication...
PHPDoc type hinting for array of objects?
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347
Use:
/* @var $objs Test[] */
foreach ($objs as $obj) {
// Typehinting will occur after typi...
Remove secure warnings (_CRT_SECURE_NO_WARNINGS) from projects by default in Visual Studio
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Mark all the desired projects in solution explorer.
Press Alt-F7 or right click in solution explorer and select "Properties"
Configurations:All Configurations
Click on the
Preprocessor Definitions line to invoke its editor
Choose
Edit...
Copy "_CRT_SECURE_NO_WARNINGS" into the Prep...
PostgreSQL Crosstab Query
...'Active', 4), ('B', 'Inactive', 5)
, ('C', 'Inactive', 7); -- ('C', 'Active') is missing
Simple form - not fit for missing attributes
crosstab(text) with 1 input parameter:
SELECT *
FROM crosstab(
'SELECT section, status, ct
FROM tbl
ORDER BY 1,2' -- needs t...
A circular reference was detected while serializing an object of type 'SubSonic.Schema .DatabaseColu
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177
It seems that there are circular references in your object hierarchy which is not supported by ...
JavaScript + Unicode regexes
...nd straight-forward as I would have expected it:
[\u2000-\u206F\u2E00-\u2E7F]
There also is XRegExp, a project that brings Unicode support to JavaScript by offering an alternative regex engine with extended capabilities.
And of course, required reading: mathiasbynens.be - JavaScript has a Unicod...
Generate table relationship diagram from existing schema (SQL Server) [closed]
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edited Dec 4 '18 at 7:49
community wiki
3...
Is it possible to view RabbitMQ message contents directly from the command line?
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107
You should enable the management plugin.
rabbitmq-plugins enable rabbitmq_management
See here...