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NSNotificationCenter addObserver in Swift
...erver(self, selector: #selector(YourClassName.methodOfReceivedNotification(_:)), name:"NotificationIdentifier", object: nil)
Method handler for received Notification
func methodOfReceivedNotification(notification: NSNotification){
// Take Action on Notification
}
For historic Xcode versio...
How can I tell PyCharm what type a parameter is expected to be?
...g:
def repress(self, peasant: Person) -> bool:
peasant.knock_over() # Shows a warning. And there was much rejoicing.
return peasant.badly_hurt() # Lets say, its not known from here that this method will always return a bool
Sometimes this is useful for non-public methods, t...
Python list directory, subdirectory, and files
...
comprehension list: all_files = [os.path.join(path, name) for name in files for path, subdirs, files in os.walk(folder)]
– Nir
Aug 12 '19 at 14:40
...
Constructors in JavaScript objects
... name = 'Unknown';
// public (this instance only)
this.get_id = function () { return id; };
this.get_name = function () { return name; };
this.set_name = function (value) {
if (typeof value != 'string')
throw 'Name must be a string';
...
Using “super” in C++
.....). You are quite right in your answer, including the chaining, I guess. ^_^ ...
– paercebal
Jun 10 '09 at 16:45
how ...
Find the files existing in one directory but not in the other [closed]
...ted Apr 26 '16 at 12:41
Talespin_Kit
16.6k2222 gold badges8282 silver badges115115 bronze badges
answered May 28 '13 at 9:30
...
How to exit in Node.js
... @Brad And PHP is a general purpose language. No need to run it with mod_php or use Apache. You can reimplement an httpd in PHP like node does if you really want or use a more sane/standardized approach like FastCGI just like you can in node.
– binki
Aug 8 '...
Reverse a string in Python
... for readability and reusability, put the slice in a function
def reversed_string(a_string):
return a_string[::-1]
and then:
>>> reversed_string('a_string')
'gnirts_a'
Longer explanation
If you're interested in the academic exposition, please keep reading.
There is no built-i...
Auto reloading python Flask app upon code changes
...letsprojects.com/en/1.1.x/quickstart/#debug-mode
Example:
$ export FLASK_APP=main.py
$ export FLASK_ENV=development
$ flask run
or in one command:
$ FLASK_APP=main.py FLASK_ENV=development flask run
If you want different port than the default (5000) add --port option.
Example:
$ FLASK_APP=...
Why does GCC generate such radically different assembly for nearly the same C code?
... why they are so different, first we must understand how GCC optimizes fast_trunc_one().
Believe it or not, fast_trunc_one() is being optimized to this:
int fast_trunc_one(int i) {
int mantissa, exponent;
mantissa = (i & 0x07fffff) | 0x800000;
exponent = 150 - ((i >> 23) &...