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C++0x lambda capture by value always const?
Is there any way to capture by value, and make the captured value non-const? I have a library functor that I would like to capture & call a method that is non-const but should be.
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Run JavaScript when an element loses focus
... answered Apr 20 '09 at 16:51
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Default value for field in Django model
...e=False)
Also, your id field is unnecessary. Django will add it automatically.
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How to delete images from a private docker registry?
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Currently you cannot use the Registry API for that task. It only allows you to delete a repository or a specific tag.
In general, deleting a repository means, that all the tags associated to this repo are deleted.
Deleting a tag means, t...
ListBox vs. ListView - how to choose for data binding
I'm considering either a ListBox or a ListView for a WPF application. It seems either supports data binding and item templates. My application has a simple list of items that I intend to be able to search/sort/filter based on user input. The data binding demo ( http://msdn.microsoft.com/en-us/lib...
Is \d not supported by grep's basic expressions?
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grep's default mode is (iirc) POSIX regex, and \d is pcre. You can either pass -P to gnu grep, for perl-like regexps, or use [[:digit:]] instead of \d.
daenyth@Bragi ~ $ echo 1 | grep -P '\d'
1
daenyth@Bragi ~ $ echo 1 | grep '[[:digit:]]'
1
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URL: Username with @
...get reserved characters in url authority or path parts.
To solve general case of special characters: Just open chrome console with F12 then paste encodeURIComponent(str) where str is your password (or username) and then use the encoded result to form url with password.
Hope this saves you some t...
How to get min/max of two integers in Postgres/SQL?
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You want the inline sql case:
set my_column = case when my_column - 10 > 0 then my_column - 10 else 0 end
max() is an aggregate function and gets the maximum of a row of a result set.
Edit: oops, didn't know about greatest and least in postgr...
...t 4.0+
<%#: %> - is used for data binding expressions and is automatically HTMLEncoded.
<%-- --%> - is for server-side comments
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Java: Literal percent sign in printf statement
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The percent sign is escaped using a percent sign:
System.out.printf("%s\t%s\t%1.2f%%\t%1.2f%%\n",ID,pattern,support,confidence);
The complete syntax can be accessed in java docs. This particular information is in the section Conversions of the ...