>> [1, 2, 3, 4, 5].any? {开发者_StackOverflow社区|n| n % 3 == 0} => true What if I want to know which item matched, not just whether an item matched? I\'m only interested in short-circuitin
I\'m still pretty new to R and AI / ML techniques. I would like to use a neural net for prediction, and since I\'m new I would just like to see if this is how it should be done.
array.include? \'foo\' or array.include? \'bar\' is a syntax error (unexpect开发者_如何学Goed keyword_or). Parentheses solve the problem, but as I\'m new to Ruby I\'ve no idea which of the following
Calling get(key) on a dictionary will return None by default if the key isn\'t present in a dictionary.What is the idiomatic equivalent for a list, such that if a list is of at least size of the pa开发
It seems silly to write the following: L = [] if x in L: L[x] = something else: L[x] = something_else Doesn\'t this perform the look-up for x twice?I tried using index(), but th开发者_运维技巧is g
I am writing a method which will return if something is true or not. But if the resources needed to test the condition are not available, it will not be able to return true or false.
Closed. This questio开发者_StackOverflown is opinion-based. It is not currently accepting answers.
Suppose you have a route like: from(\"direct:start\").to(\"http://some.endpoint/accounts/\"); where message passed through direct:start is an XML:
I need a function like Seq.head, but returning None instead of throwing an exception when the sequence is empty, i.e., seq<\'T> -> \'T option.
I want to keep my scripts organized in one .js file for all my site (I have a mess right now), something like namespaces and classes in C#...
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