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Python dictionary: Get list of values for list of keys
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found_keys = mapping.keys() & iterable gives TypeError: unsupported operand type(s) for &: 'list' and 'list' on python 2.7; `found_keys = [key for key in mapping.keys() if key in iterable] works best
– NotGaeL
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How to convert a std::string to const char* or char*?
...tr.begin(), str.end());
writable.push_back('\0');
// get the char* using &writable[0] or &*writable.begin()
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How does this giant regex work?
...ently found the code below in one of my directories, in a file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories.
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Is the practice of returning a C++ reference variable evil?
...reference is perfectly normal and happens all the time.
If you mean:
int& getInt() {
int i;
return i; // DON'T DO THIS.
}
That is all sorts of evil. The stack-allocated i will go away and you are referring to nothing. This is also evil:
int& getInt() {
int* i = new int;
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jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON
... need a string out of an existing JSON string, just stringify it again. in PHP, that would be var jsonEncodedAsString = <?= json_encode(myEncodedJson) ?> where myEncodedJson is the result of a previous json_encode That will take care of escaping your single quote, actually, it will just output...
Laravel migration: unique key is too long, even if specified
...tions guide to fix this all you have to do is edit your AppServiceProvider.php file and inside the boot method set a default string length:
use Illuminate\Database\Schema\Builder;
public function boot()
{
Builder::defaultStringLength(191);
}
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Is it better in C++ to pass by value or pass by constant reference?
.... Using pass-by-reference the compiler cannot assume that always. Simple example:
foo * f;
void bar(foo g) {
g.i = 10;
f->i = 2;
g.i += 5;
}
the compiler can optimize it into
g.i = 15;
f->i = 2;
since it knows that f and g doesn't share the same location. if g was a referenc...
Unexpected results when working with very big integers on interpreted languages
...et the sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
36 Answers
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How to make a PHP SOAP call using the SoapClient class
I'm used to writing PHP code, but do not often use Object-Oriented coding. I now need to interact with SOAP (as a client) and am not able to get the syntax right. I've got a WSDL file which allows me to properly set up a new connection using the SoapClient class. However, I'm unable to actually make...
How to properly add cross-site request forgery (CSRF) token using PHP
... just mixes it deterministically
Try this out:
Generating a CSRF Token
PHP 7
session_start();
if (empty($_SESSION['token'])) {
$_SESSION['token'] = bin2hex(random_bytes(32));
}
$token = $_SESSION['token'];
Sidenote: One of my employer's open source projects is an initiative to backport ra...