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How expensive is RTTI?
I understand that there is a resource hit from using RTTI, but how big is it? Everywhere I've looked just says that "RTTI is expensive," but none of them actually give any benchmarks or quantitative data reguarding memory, processor time, or speed.
...
What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
... I'll try to make it clear.
You can omit dot when using the prefix, infix and postfix notations -- the so called operator notation. While using the operator notation, and only then, you can omit the parenthesis if there is less than two parameters passed to the method.
Now, the operator notation i...
Where are the PostgreSQL logs on macOS?
...
SELECT
*
FROM
pg_settings
WHERE
category IN( 'Reporting and Logging / Where to Log' , 'File Locations')
ORDER BY
category,
name;
In my case, it's in "/Library/PostgreSQL/8.4/data/pg_log"
share
...
git rebase without changing commit timestamps
...-committer-date-is-author-date option seems to leave the author timestamp, and set the committer timestamp to be the same as the original author timestamp, which is what the OP Olivier Verdier wanted.
I found the last commit with the correct date and did:
git rebase --committer-date-is-author-dat...
Convert.ChangeType() fails on Nullable Types
...s not seem to work for uniqueidentifier to string.
– Anders Lindén
Nov 5 '18 at 10:32
Is there any particular reason ...
How to echo with different colors in the Windows command line
I know that the color bf command sets the colors of the whole command line window but I wanted to to print one single line in a different color.
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Enum type constraints in C# [duplicate]
... 's? I'm sure there is a method behind the madness, but I'd like to understand why it's not possible.
6 Answers
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What does the caret (‘^’) mean in C++/CLI?
I just came across this code and a few Google searches turn up no explanation of this mysterious (to me) syntax.
7 Answers
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Does Haskell require a garbage collector?
...ser types "clear"; so the lifetime of this must be determined dynamically, and this is why dynamic memory management is necessary.
So in this sense, automated dynamic memory allocation is necessary, and in practice this means: yes, Haskell requires a garbage collector, since garbage collection is t...
Hidden features of Perl?
...ation when looping through the records (usually lines) returned by a file handle, without using a flag variable:
while(<$fh>)
{
next if 1..1; # skip first record
...
}
Run perldoc perlop and search for "flip-flop" for more information and examples.
...