just returnit.” The quote is necessary because lists are special in Clojure. When Clojure evaluates a list, it tries to interpret the first element of this list as a function (or macro) and the remainder of the list as arguments.
foreach ($arr as $element) { if (!$callback($element)) { return FALSE; } } return TRUE; } /** * Returns true if the given predicate is true for at least one element. * credit: array_every and array_some.php * https://gist.github.com/kid-icarus/8661319 */ function some(calla...
It then invokes (f init x0) where x0 is the first element in xs. f returns a new accumulator value acc1, which is then passed to (f acc1 x1) to produce a new accumulator acc2, and so on until every x in xs is folded into the accumulator. That accumulator is the return value...
Yrq “for” sreturn s nqeuseec, av into jc aqqv rv amrtfnsor kry rtlessu yvas erjn s kar vlt ehrtrfu uoitctoapmn. Saiimrlyl, rdx fiolwglno maintain fcntinou paseilp scuneeeq gscrniopes (fjkv map kt filter) inagmk zvtb rrds rdx ttpuou saeirnm roy mccv za vqr nptiu ie...
Last Element ;; Write a function which returns the last element in a sequence. ;; Restrictions (please don't use these function(s)): last ;; (= (__ [1 2 3 4 5]) 5) (defn last-elem [[n & more]] (if more (recur more) n)) (clojure.test/testing "Write a function which ...
and the last element is the rightmost element in the rightmost leaf. For now, we require that all leaf nodes are at the same depth1. As an example, take a look at the tree below: It has the integers 0 to 8 in it, where 0 is the first element and 8 the last. The number 9 is...
If you don't hold on the head of the sequence, you can any other part of the ordered sequence including the last element without incurring into an out of memory (about 2 minutes later in my machine).p/fold, p/xrf and p/folder
Each iteration it pulls off one of the remaining coordinates. Note that I'm usingfirstto do this.remainingis a set, which is unordered, sofirsteffectively could return any element in the set. For this loop that doesn't matter, but it's important to be aware of if you're going to use...
void remove(); } When passed an object that implements this interface, Clojure's sequence operators pull data from it by using thenextmethod, while using thehasNextmethod to know when to stop. Theremovemethod is required to remove its last element from the underlying collection. This in-place...
It then uses map first to get the first element of each pair, the error message. Here it is in action: (error-messages-for "" ["Please enter a name" not-empty]) ; => ("Please enter a name") Now we need to accumulate these error messages in a map. Here’s the complete ...