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Why is f(i = -1, i = -1) undefined behavior?
...r operation on the same memory location.
For example, imagine that it was more efficient to zero the memory, then decrement it, compared with loading the value -1 in. Then this:
f(i=-1, i=-1)
might become:
clear i
clear i
decr i
decr i
Now i is -2.
It is probably a bogus example, but it is p...
Is there a way to get the git root directory in one command?
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git rev-parse --show-toplevel
If you want to replicate the Git command more directly, you can create an alias:
git config --global alias.root 'rev-parse --show-toplevel'
and now git root will function just as hg root.
Note: In a submodule this will display the root directory of the submodu...
Check if a string contains an element from a list (of strings)
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bool b = listOfStrings.Any(s=>myString.Contains(s));
or (shorter and more efficient, but arguably less clear):
bool b = listOfStrings.Any(myString.Contains);
If you were testing equality, it would be worth looking at HashSet etc, but this won't help with partial matches unless you split it ...
How to implement onBackPressed() in Fragments?
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166
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Listing only directories using ls in Bash?
...Zebra Setting nullglob would avoid the error message, but would cause even more confusion: with nullglob set and no subdirectories, ls */ would expand to just ls, which would list all files in the current directory. I'm pretty sure that's not what you want in that case.
– Gordo...
New to unit testing, how to write great tests? [closed]
...s calculated is not checked - only that the result is correct. Keep adding more and more simple test cases like the above until you have have covered as many scenarios as possible. Use your code coverage tool to see if you have missed any interesting paths.
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Code block in numbered list (Wiki syntax)
...syntax, it works for me on 1.17
# one
#:<pre>
#::some stuff
#::some more stuff</pre>
# two
It is not perfect, because you end up with a more indent but it does allow one to use the wiki syntax for correctly formatted pre blocks over multiple lines.
As previously mentioned, the other ...
How can I check if a directory exists in a Bash shell script?
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543
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Monad in plain English? (For the OOP programmer with no FP background)
... By that I mean some system which lets you take a type and turn it into a more special type. For example, in C# consider Nullable<T>. This is an amplifier of types. It lets you take a type, say int, and add a new capability to that type, namely, that now it can be null when it couldn't before...
Make var_dump look pretty
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Mind you, xdebug does ALLOT more than just pretty var_dump :)
– Latheesan
Nov 6 '13 at 15:55
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