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How do you use vim's quickfix feature?
...ean much. It means that the shown line of code must be placed in ~/.vimrc (_VIMRC on windows AFAIK) and from the next start of VIM every time the file is saved this command will be invoked. Right?
– Беров
May 28 '18 at 21:06
...
How to handle multiple cookies with the same name?
...P (tested on version 7) it only read the first cookie which is set to the $_COOKIE variable.
– Alexander Schranz
Feb 12 '18 at 18:56
1
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Using arrays or std::vectors in C++, what's the performance gap?
...mbly code was generated by gcc 4.1.0 invoked with g++ -O3 -S on a
// x86_64-suse-linux machine.
#include <vector>
struct S
{
int padding;
std::vector<int> v;
int * p;
std::vector<int>::iterator i;
};
int pointer_index (S & s) { return s.p[3]; }
// movq 32(%r...
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
...sql/support-files/mysql.server stop
Start it in safe mode:
$ sudo mysqld_safe --skip-grant-tables --skip-networking
(above line is the whole command)
This will be an ongoing command until the process is finished so open another shell/terminal window, log in without a password:
$ mysql -u root...
How can I stop .gitignore from appearing in the list of untracked files?
...for ignores that aren't project related, such as emacs *~ backup files, .DS_Store from OS X and so on.
– August Lilleaas
May 19 '10 at 7:48
38
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Generating a drop down list of timezones with PHP
...
I would do it in PHP, except I would avoid doing preg_match 100 some times and do this to generate your list.
$tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL);
Also, I would use PHP's names for the 'timezones' and forget about GMT offsets, which will change based o...
Is there any advantage of using map over unordered_map in case of trivial keys?
A recent talk about unordered_map in C++ made me realize that I should use unordered_map for most cases where I used map before, because of the efficiency of lookup ( amortized O(1) vs. O(log n) ). Most times I use a map, I use either int or std::string as the key type; hence, I've got...
What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...mount greater than or equal to the number of bits in the number (e.g. int64_t i = 1; i <<= 72 is undefined)
Types, Cast and Const
Casting a numeric value into a value that can't be represented by the target type (either directly or via static_cast)
Using an automatic variable before it has b...
Insert line after first match using sed
...
Alternatively, for portability, you can use perl instead:
perl -pi -e '$_ .= qq(CLIENTSCRIPT2="hello"\n) if /CLIENTSCRIPT=/' file
Or you could use ed or ex:
printf '%s\n' /CLIENTSCRIPT=/a 'CLIENTSCRIPT2="hello"' . w q | ex -s file
...
How fast is D compared to C++?
... at the assembler listing, it looks like neither dmd nor gdc inlined scalar_product, but g++/gdc did emit MMX instructions, so they might be auto-vectorizing the loop.
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