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What is a “callable”?

... given object is callable or not; or better yet just call it and catch TypeError later. callable is removed in Python 3.0 and 3.1, use callable = lambda o: hasattr(o, '__call__') or isinstance(o, collections.Callable). Example, a simplistic cache implementation: class Cached: def __init__(self...
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How to close tag properly?

...me bits may have changed Partly this is because browsers try very hard to error correct. Also, because there has much confusion about self-closing tags, and void tags. Finally, The spec has changed, or hasn't always been clear, and browsers try to be backwards compatible. So, while you can pro...
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Co-variant array conversion from x to y may cause run-time exception

...uch, the advantages overweigh the disadvantages caused by possible runtime errors when someone will try to make use of covariance when writing into the array. Hence it is allowed but not encouraged. As for your original question, list.ToArray() creates a new LinkLabel[] with values copied from orig...
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Less aggressive compilation with CSS3 calc

...did less.js attempt to compute this in the first place? It should throw an error for "100% - 250px" as it can't compute a sensible answer. – mpen Aug 2 '13 at 18:33 72 ...
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Programmatically open Maps app in iOS 6

...ly Circus, London, UK" completionHandler:^(NSArray *placemarks, NSError *error) { // Convert the CLPlacemark to an MKPlacemark // Note: There's no error checking for a failed geocode CLPlacemark *geocodedPlacemark = [placemarks objectAtIndex:0]; MKPlacemark ...
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Including jars in classpath on commandline (javac or apt)

...g javac I am having the same issue). I think what I am getting is compile errors. (Shown at bottom). 6 Answers ...
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PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL

...d to a database that I created (i.e. not a system database), it says this: ERROR: cannot reassign ownership of objects owned by role postgres because they are required by the database system – thnee Mar 8 '13 at 23:19 ...
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Convert a string to int using sql query

...sults. It will return TRUE for the string "-.", which will still cause an error when you try to cast it to a number. – Curt Jul 25 '13 at 2:22 3 ...
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Maven is not working in Java 8 when Javadoc tags are incomplete

... The best solution would be to fix the javadoc errors. If for some reason that is not possible (ie: auto generated source code) then you can disable this check. DocLint is a new feature in Java 8, which is summarized as: Provide a means to detect errors in Javadoc co...
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How do you modify a CSS style in the code behind file for divs in ASP.NET?

... aspx page. The following is essentially what I am trying to do, but I get errors. 4 Answers ...