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Difference between objectForKey and valueForKey?
...ex).
valueForKey: is a KVC method. It works with ANY class. valueForKey: allows you to access a property using a string for its name. So for instance, if I have an Account class with a property accountNumber, I can do the following:
NSNumber *anAccountNumber = [NSNumber numberWithInt:12345];
Acco...
Max length for client ip address [duplicate]
...ght now, but could I get an ip address that is longer than that with IPv6, etc?
8 Answers
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How to remove/delete a large file from commit history in Git repository?
I accidentally dropped a DVD-rip into a website project, then carelessly git commit -a -m ... , and, zap, the repo was bloated by 2.2 gigs. Next time I made some edits, deleted the video file, and committed everything, but the compressed file is still there in the repository, in history.
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How to spyOn a value property (rather than a method) with Jasmine
...ue as needed.
const spy = spyOnProperty(myObj, 'myGetterName', 'get').and.callThrough(); // Call the real thing.
Here's the line in the github source code where this method is available if you are interested.
https://github.com/jasmine/jasmine/blob/7f8f2b5e7a7af70d7f6b629331eb6fe0a7cb9279/src/cor...
What is the difference between the bridge pattern and the strategy pattern?
...n UML
Strategy Pattern in Swift:
protocol PrintStrategy {
func print(_ string: String) -> String
}
class Printer {
let strategy: PrintStrategy
init(strategy: PrintStrategy) {
self.strategy = strategy
}
func print(_ string: String) -> String {
return self.strateg...
How to correctly dismiss a DialogFragment?
...any resources that require manual cleanup (closing files, closing cursors, etc.). Even then, I would override onStop of the DialogFragment rather than onStop of the underlying Dialog.
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improv...
Create a variable name with “paste” in R?
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In my case the symbols I create (Tax1, Tax2, etc.) already had values but I wanted to use a loop and assign the symbols to another variable. So the above two answers gave me a way to accomplish this. This may be helpful in answering your question as the assignment of a ...
Convert a list of characters into a string
...lasses - "iterable" is a protocol, not a class. You can filter, map, join, etc, using any iterable.
– rosuav
Aug 18 '16 at 1:45
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How to use DISTINCT and ORDER BY in same SELECT statement?
... The brackets are for escaping keywords, such as Order, event, etc. so if you have (for example) a column in your table called Event you can write [Event] instead of Event to stop SQL throwing a parse error.
– Ben Maxfield
Oct 24 '16 at 21:26
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Reminder - \r\n or \n\r?
... HTTP protocol states you must use \r\n as the line terminator for headers etc, regardless of platform.
– Matti Virkkunen
Jun 30 '11 at 19:28
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