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Python try-else
...ause it avoids accidentally
catching an exception that wasn’t
raised by the code being protected by
the try ... except statement.
So, if you have a method that could, for example, throw an IOError, and you want to catch exceptions it raises, but there's something else you want to do if the...
Import CSV to SQLite
... as 1, 25, 62, 7. I also had a problem with , and in my case it was solved by changing "separator ," into ".mode csv". So you could try:
sqlite> create table foo(a, b);
sqlite> .mode csv
sqlite> .import test.csv foo
The first command creates the column names for the table. However, if yo...
What are the differences between git remote prune, git prune, git fetch --prune, etc
...hat refers to some objects that represent the history of that branch. So, by definition, git prune will not remove random_branch_I_want_deleted. Really, git prune is a way to delete data that has accumulated in Git but is not being referenced by anything. In general, it doesn't affect your view o...
Unbalanced calls to begin/end appearance transitions for
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You can generate this warning by presenting the modal vc before the app is done initializing. i.e. Start a tabbed application template app and present a modal vc on top of self.tabBarController as the last line in application:didFinishLaunching. Warning...
Swift: declare an empty dictionary
I am beginning to learn swift by following the iBook- The Swift Programming Language on Swift provided by Apple. The book says to create an empty dictionary one should use [:] same as while declaring array as [] :
...
how do I use UIScrollView in Interface Builder?
While I've used UIScrollView successfully in the past by manipulating it programmatically, I'm having trouble getting it to work by setting it up exclusively in Interface Builder.
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Styling multi-line conditions in 'if' statements? [closed]
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Note that the trailing \ solutions are not recommended by PEP 8. One reason is that if a space is added by mistake after a \ it might not show in your editor, and the code becomes syntactically incorrect.
– Eric O Lebigot
Jan 14 '11 at 10:2...
Legality of COW std::string implementation in C++11
...d require making a copy (and invalidating references), which is disallowed by the paragraph above. Hence, it's no longer legal to have a COW string in C++11.
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Scope of sessionStorage and localStorage
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@Christophe I have verified my statements a while back by viewing the sqlite(3) database called webappsstore.sqlite in my Firefox profile directory, using query SELECT scope FROM webappsstore2;. The result is the reverse of the domain, followed by the non-reversed protocol, and s...
Why is it bad style to `rescue Exception => e` in Ruby?
Ryan Davis’s Ruby QuickRef says (without explanation):
6 Answers
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