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Algorithm to return all combinations of k elements from n
...s' (1970)
The algorithm in C...
Index of Combinations in Lexicographical Order (Buckles Algorithm 515)
You can also reference a combination by its index (in lexicographical order). Realizing that the index should be some amount of change from right to left based on the index we can construct som...
How to concatenate string variables in Bash
...he habit of putting $foo inside the double quotes, for the times when it really does matter.
– Cascabel
Nov 15 '10 at 7:56
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How do I set up a simple delegate to communicate between two view controllers?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Spring: @Component versus @Bean
I understand that @Component annotation was introduced in spring 2.5 in order to get rid of xml bean definition by using classpath scanning.
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What is the AppDelegate for and how do I know when to use it?
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I normally avoid the design approach implied by Andrew's use of the term "heart of your application". What I mean by this is that I think you should avoid lumping too many things in a central location -- good program design normall...
How can I reverse the order of lines in a file?
I'd like to reverse the order of lines in a text file (or stdin), preserving the contents of each line.
25 Answers
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How to compare objects by multiple fields
...thenComparing(Person::getLastName, Comparator.nullsFirst(Comparator.naturalOrder())) - first field selector, then comparator
– gavenkoa
May 30 '18 at 14:22
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Asynchronous vs synchronous execution, what does it really mean? [closed]
...nd you.
ASYNCHRONOUS
You are in a restaurant with many other people. You order your food. Other people can also order their food, they don't have to wait for your food to be cooked and served to you before they can order.
In the kitchen restaurant workers are continuously cooking, serving, and tak...
UITableView row animation duration and completion callback
...mSelectorOnMainThread:withObject:waitUntilDone:]; in setCompletionBlock in order to call your delegate in next runloop. if you call your delegate directly, without performSelectorOnMainThread, you get old value for tableView.contentSize.
– slamor
Sep 18 '13 at ...
How to sort an ArrayList?
... have a List of doubles in java and I want to sort ArrayList in descending order.
20 Answers
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