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Empty set literal?
...types.html#set-types-set-frozenset says "non-empty sets ... can be created by placing a comma-separated list of elements within braces"
– S.Lott
May 25 '11 at 20:32
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Is there a benefit to defining a class inside another class in Python?
...that you can accomplish exactly the same (perhaps in a less confusing way) by using a module.
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How do I modify a MySQL column to allow NULL?
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ALTER TABLE mytable MODIFY mycolumn VARCHAR(255);
Columns are nullable by default. As long as the column is not declared UNIQUE or NOT NULL, there shouldn't be any problems.
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How do I add a library project to Android Studio?
...has changed.
My description is focused on adding external library project by hand via Gradle files (for better understanding the process). If you want to add a library via Android Studio creator just check the answer below with visual guide (there are some differences between Android Studio 1.0 and...
Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]
...ueReusableCellWithIdentifier(identifier: String!) -> AnyObject! // Used by the delegate to acquire an already allocated cell, in lieu of allocating a new one.
That's determined by the exclamation mark after AnyObject:
AnyObject!
So, first thing to consider is, what is an "Implicitly Unwr...
Why does “pip install” inside Python raise a SyntaxError?
...ts directory, but wraped in exe to run it with default python interpreter. By opening pip.exe with 7-zip you can see main.py importing pip, sys and re modules... (And there you'll find the answer how to run it within a python shell)--> pip is a regular python module. Don't forget windows wasn't f...
In Maven 2, how do I know from which dependency comes a transitive dependency?
... then there is a graphical version of dependency tree where you can filter by scope etc.
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How do I convert from stringstream to string in C++?
...lying string object.
1) Returns a copy of the underlying string as if by calling rdbuf()->str().
2) Replaces the contents of the underlying string as if by calling rdbuf()->str(new_str)...
Notes
The copy of the underlying string returned by str is a temporary object that wi...
How can I change a secret Gist to public?
... URL for your Gist will never change, just its visibility.
As commented by GiDo though, since 2016:
you can only make public a gist that was previously private.
When it is public it will stay public.
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How do you see the entire command history in interactive Python?
..., and I Cmd + K (cleared) my earlier commands. I can go through them one by one using the arrow keys. But is there an option like the --history option in bash shell, which shows you all the commands you've entered so far?
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