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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...
Explode PHP string by new line
...mment to the first answer, the best practice is to use the PHP constant PHP_EOL which represents the current system's EOL (End Of Line).
$skuList = explode(PHP_EOL, $_POST['skuList']);
PHP provides a lot of other very useful constants that you can use to make your code system independent, see thi...
Using “super” in C++
.....). You are quite right in your answer, including the chaining, I guess. ^_^ ...
– paercebal
Jun 10 '09 at 16:45
how ...
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...
Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
Before KitKat (or before the new Gallery) the Intent.ACTION_GET_CONTENT returned a URI like this
19 Answers
...
How to parse JSON in Scala using standard Scala classes?
... {
"languages": [{
"name": "English",
"is_active": true,
"completeness": 2.5
}, {
"name": "Latin",
"is_active": false,
"completeness": 0.9
}]
}
""".stripMargin
val result = for {
Some(M(m...
iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
... UIViewController and call it when you want the keyboard gone:
@interface _TempUIVC : UIViewController
@end
@implementation _TempUIVC
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
@end
@implementation UIViewController (Helpers)
- ...
How do I correctly clone a JavaScript object?
...f a function. Also, an object's prototype is referenced with the attribute __proto__, which is also hidden, and will not be copied by a for/in loop iterating over the source object's attributes. I think __proto__ might be specific to Firefox's JavaScript interpreter and it may be something different...
How do I find which rpm package supplies a file I'm looking for?
As an example, I am looking for a mod_files.sh file which presumably would come with the php-devel package. I guessed that yum would install the mod_files.sh file with the php-devel x86_64 5.1.6-23.2.el5_3 package, but the file appears to not to be installed on my filesystem.
...