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Is gcc std::unordered_map implementation slow? If so - why?
We are developing a highly performance critical software in C++. There we need a concurrent hash map and implemented one. So we wrote a benchmark to figure out, how much slower our concurrent hash map is compared with std::unordered_map .
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Maximum MIMEType Length when storing type in DB
What are people using as the length of a MIMEType field in their databases? The longest one we've seen so far is 72 bytes:
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What is float in Java?
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In Java, when you type a decimal number as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a d...
How to create index on JSON field in Postgres?
In PostgreSQL 9.3 Beta 2 (?), how do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error:
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Bash: Syntax error: redirection unexpected
I do this in a script:
9 Answers
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Allow multiple roles to access controller action
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Another option is to use a single authorize filter as you posted but remove the inner quotations.
[Authorize(Roles="members,admin")]
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unix - head AND tail of file
Say you have a txt file, what is the command to view the top 10 lines and bottom 10 lines of file simultaneously?
20 Answer...
Stacked Tabs in Bootstrap 3
I am trying to implement left-aligned stacked tabs using the Tab jquery plugin in Bootstrap 3 where tabs are rendered vertically to the left of tab content, rather than on top. When I try the following;
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GraphViz - How to connect subgraphs?
In the DOT language for GraphViz , I'm trying to represent a dependency diagram. I need to be able to have nodes inside a container and to be able to make nodes and/or containers dependent on other nodes and/or containers.
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OSX - How to auto Close Terminal window after the “exit” command executed.
When I'm done with Terminal, I want to exit it. Right now, I have three options:
14 Answers
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