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jQuery pass more parameters into callback
.../ an object / whatever extra params you wish to pass.
$.post("someurl.php", someData, doSomething(extraStuff), "json");
};
What is happening?
In the last line, doSomething(extraStuff) is invoked and the result of that invocation is a function pointer.
Because extraStuff is passed as an argu...
How to run a shell script on a Unix console or Mac terminal?
...er from the same folder, still using #!hashbang in scripts.
As example a php7.2 executable copied from /usr/bin is in a folder along a hello script.
#!./php7.2
<?php
echo "Hello!";
To run it:
./hello
Which behave just as equal as:
./php7.2 hello
...
How should one use std::optional?
...nt(std::string s); //return nullptr if fail
This requires dynamic memory allocation, worrying about ownership, etc. - always prefer one of the other two signatures above.
Another example:
class Contact
{
std::optional<std::string> home_phone;
std::optional<std::string> work...
Positioning MKMapView to show multiple annotations at once
... How do you create the CLLocationCoordinate2D *coords array? Using malloc()?
– Hlung
Feb 23 '14 at 9:24
...
How do you convert a byte array to a hexadecimal string, and vice versa?
...
You're using SubString. Doesn't this loop allocate a horrible amount of string objects?
– Wim Coenen
Mar 6 '09 at 16:36
30
...
STL or Qt containers?
...r types, making std::copy() much less often needed.
STL containers have an Allocator template argument, making custom memory management trivial (typedef required), compared with Qt (fork of QLineEdit required for s/QString/secqstring/). EDIT 20171220: This cuts Qt off of advances in allocator design...
tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...>
# include <cstdarg>
#endif
/*
TODO: intern strings instead of allocation.
*/
/*
gcc:
g++ -Wall -DDEBUG tinyxml2.cpp xmltest.cpp -o gccxmltest.exe
Formatting, Artistic Style:
AStyle.exe --style=1tbs --indent-switches --break-closing-brackets --indent-preproce...
How can I create an array with key value pairs?
...dd key-value pairs to the end of the array, even if you have integer keys. PHP arrays are ordered, so if you want to prepend an array with a key-value pair, you have to do this: $data = ['user_email' => joy@cargomar.org'] + $data.
– totymedli
May 9 '18 at 22...
If isset $_POST
... This comparison table is very helpful for things like this php.net/manual/en/types.comparisons.php
– A Star
Jun 4 '13 at 22:16
2
...
Fastest hash for non-cryptographic uses?
...
CRC32 is pretty fast and there's a function for it: http://www.php.net/manual/en/function.crc32.php
But you should be aware that CRC32 will have more collisions than MD5 or even SHA-1 hashes, simply because of the reduced length (32 bits compared to 128 bits respectively 160 bits). But ...