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JavaScript plus sign in front of function expression
...he JIT could use that to compile the function as a numerical-only function etc. However, to prevent the unary plus being a concatenation when used in a larger expression, you would need parentheses:
blah + (+(function(){ var scope; return "4"; })());
...
Selecting with complex criteria from pandas.DataFrame
...that & operator takes a precedence over operators such as > or < etc. That is why
4 < 5 & 6 > 4
evaluates to False. Therefore if you're using pd.loc, you need to put brackets around your logical statements, otherwise you get an error. That's why do:
df.loc[(df['A'] > 10) ...
Git status - is there a way to show changes only in a specific directory?
...to compose git diff, git ls-files output and recreate all the color coding etc. that git status provides if it is to be a replacement for git status. I'd also really like to see a solution to this!
– Peter V. Mørch
Jun 17 '11 at 8:18
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How to write to Console.Out during execution of an MSTest test
...g debug information anywhere we can think it might help, crawling the logs etc, but we have not been able to reproduce or figure it out.
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vector::at vs. vector::operator[]
...of use, flawed reasoning about the continued validity of some earlier test etc. kick in.
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Passing arguments forward to another javascript function
...null, arguments);
}
function b(){
alert(arguments); //arguments[0] = 1, etc
}
a(1,2,3);
You can test it out here.
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Should a function have only one return statement?
...S_OK){ if(SUCCEEDED(Operation3())) { } else error = OPERATION3FAILED; } //etc.
– Joe Pineda
Oct 29 '08 at 21:27
6
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switch / pattern matching idea
...and currying, pattern matching, nested functions, generics, monad support, etc. in C# gets very ugly, very quickly. It's fun, and some very smart people have done some very cool things in C#, but actually using it feels heavy.
What I have ended up using often (across-projects) in C#:
Sequence fun...
What does Redis do when it runs out of memory?
...OC-STATS - Show allocator internal stats"
/usr/local/etc/redis.conf
############################## MEMORY MANAGEMENT ################################
# Set a memory usage limit to the specified amount of bytes.
# When the memory limit is reached Redis will try to remove keys...
Save PL/pgSQL output from PostgreSQL to a CSV file
...truction \copy. \copy invokes COPY FROM STDIN or COPY TO STDOUT, and then fetches/stores the data in a file accessible to the psql client. Thus, file accessibility and access rights depend on the client rather than the server when \copy is used.
Your application programming language may also have ...