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Linux c++ error: undefined reference to 'dlopen'
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I've found that the order of the options matters too. On a project using sqlite3, I have to put -ldl (and -lpthread) after -lsqlite3. Don't know what that is, I'm sure the answer is there if I would just RTFM.
– user2918461...
Optional query string parameters in ASP.NET Web API
...blic int Skip { get; set; }
public int Take { get; set; }
}
Update:
In order to ensure the values are optional make sure to use reference types or nullables (ex. int?) for the models properties.
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What is Rack middleware?
...equest. Rack allows you to add multiple middlewares that are called in the order they are added. It's just a great way to add functionality without changing the core of the rack application.
Rack - The Gem
Although rack - first of all - is a convention it also is a gem that provides great function...
How to swap keys and values in a hash
...>[:c, :b]}
h.inverse.inverse
=> {:a=>1, :c=>2, :b=>2} # order might not be preserved
h.inverse.inverse == h
=> true # true-ish because order might change
whereas the built-in invert method is just broken:
h.invert
=> {1=>:a, 2=>:c} # FAIL
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How to use concerns in Rails 4
... the idea is to extract common and / or context specific chunks of code in order to clean up the models and avoid them getting too fat and messy.
As an example, I'll put one well known pattern, the taggable pattern:
# app/models/product.rb
class Product
include Taggable
...
end
# app/models/...
What is a monad?
...ses them pervasively) but can be used in any language which support higher-order functions (that is, functions which can take other functions as arguments).
Arrays in JavaScript support the pattern, so let’s use that as the first example.
The gist of the pattern is we have a type (Array in this ca...
Can a Windows batch file determine its own file name?
... gives "c:\tmp\foo.bat". Note the pieces are always assembled in canonical order, so if you get cute and try %~xnpd0, you still get "c:\tmp\foo.bat"
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What are the main uses of yield(), and how does it differ from join() and interrupt()?
... that by the end each 1 was replaced with its sequence number in row major order:
1 0 0 0
2 3 0 0
0 0 0 4
0 0 5 6
0 0 7 8
In the next step, each value is replaced by the minimum between itself and its neighbours' values:
1 0 0 0
1 1 0 0
0 0 0 4
0 0 4 4
0 0 4 4
We can now easily determine that ...
How to programmatically clear application data
...developing automated tests for an android application (using Robotium). In order to ensure the consistency and reliability of tests, I would like to start each test with clean state (of the application under test). In order to do so, I need to clear the app data. This can be done manually in Setting...
Shell script to delete directories older than n days
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@OrGal you are absolutely correct. In order to prevent this, just use: find /path/to/base/dir/*.
– zloynemec
Jul 5 '15 at 8:28
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