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What is the difference between quiet NaN and signaling NaN?
...e exit status:
g++ -ggdb3 -O0 -Wall -Wextra -pthread -std=c++11 -pedantic-errors -o blow_up.out blow_up.cpp -lm -lrt
./blow_up.out
echo $?
Output:
FE_ALL_EXCEPT snan + 1.0f
feenableexcept qnan + 1.0f
Floating point exception (core dumped)
136
Note that this behaviour only happens with -O0 in G...
How can I add or update a query string parameter?
..._:0.8503766759030615' of undefined or null reference on ie11 you get that error. it's not a pollyfill if it doesn't work as a fallback.
– Val
Feb 8 '17 at 12:03
...
C++ performance vs. Java/C#
...nce of its objects. And C++ does not have a finally clause. This is not an error.
:-)
And despite C# primitive-like structs, C++ "on the stack" objects will cost nothing at allocation and destruction, and will need no GC to work in an independent thread to do the cleaning.
As for memory fragmenta...
Is it possible to create static classes in PHP (like in C#)?
...uctor automatically (if you try and call self::__construct() you'll get an error).
Therefore you'd have to create an initialize() function and call it in each method:
<?php
class Hello
{
private static $greeting = 'Hello';
private static $initialized = false;
private static functi...
Why does C# forbid generic attribute types?
...e grammar by using constant-expression. In these contexts, a compile-time error occurs if an expression cannot be fully evaluated at compile-time." Attributes are in the list.
– GalacticCowboy
Nov 16 '08 at 20:44
...
Nginx serves .php files as downloads, instead of executing them
... the config file at /etc/nginx/sites-available/default.
It gave me these errors:
nginx: [emerg] unexpected end of file, expecting "}" in /etc/nginx/sites-enabled/default:115
nginx: configuration file /etc/nginx/nginx.conf test failed
So I went into the config file and on the last line there was...
Better way to revert to a previous SVN revision of a file?
... specified version, it is a complex and crazy operation, which is prone to errors if you don't watch out!
– Falco
Mar 19 '14 at 11:57
1
...
Bootstrap 3 Glyphicons are not working
...tstrap 3.0 and can't get the glyphicons to work. I get some kind of "E003" error. Any ideas why this is happening? I tried both locally and online and I still get the same problem.
...
Cron jobs and random times, within given hours
...
When I use the first suggestion above, I get crontab: errors in crontab file, can't install. Do you want to retry the same edit? please help
– Seano
Sep 13 '15 at 18:04
...
Using backticks around field names
...reserved words or forbidden chars.
In some cases, you get more descriptive error messages.
If you avoid bad practices you don't care, but... in real word, sometimes they are a decent way to avoid SQL injections.
Disadvantages:
They are not standard and usually not portable. However, as long as y...