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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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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...
Why is it bad style to `rescue Exception => e` in Ruby?
Ryan Davis’s Ruby QuickRef says (without explanation):
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Combine two data frames by rows (rbind) when they have different sets of columns
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If the columns in df1 is a subset of those in df2 (by column names):
df3 <- rbind(df1, df2[, names(df1)])
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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...
How to write the Fibonacci Sequence?
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Try to do, by hand, an example of input-output of your program (with a short range). Try then to figure out where your program is wrong. Try to convert the "by-hand method" in code. This is for exercise, to learn. I could put down two l...
How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
...namespace n ON n.oid = p.pronamespace WHERE n.nspname ~ '^(public)$' ORDER BY 1, 2, 4; Above is the query generated (from \set ECHO_HIDDEN 'on').
– Simon D
Jan 6 '18 at 9:03
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How can I see the current value of my $PATH variable on OS X?
...can just execute set or env to display all of your environment variables.
By typing $PATH you tried to run your PATH variable contents as a command name.
Bash displayed the contents of your path any way. Based on your output the following directories will be searched in the following order:
/usr...
Instance variables vs. class variables in Python
...e special constructs addressing specific use cases, else it's code created by an aberrant programmer wanting to show off they know some obscure corner of Python programming.
Alex mentions in his reply that access will be (a little bit) faster due to one less level of lookup... let me further clarif...
Catch Ctrl-C in C
...hen posting publicly it is probably as well to avoid the debate altogether by using int main() lest it distract from teh main point.
– Clifford
Nov 18 '10 at 17:08
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