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Is there a shorter way to find the first element in an array meeting some conditions than this:
my_array[ my_array.index {|x| x.some_test} ] 
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There are several methods to get the first element of an array in PHP. Some of the methods are using foreach loop, reset function, array_slice function, array_values, array_reverse, and many more. We will discuss the different ways to access the first element of an array sequentially.
To check if any value in JavaScript array satisfies the condition you can use Array. prototype. some() method. It returns true if any item in array satisfies the condition else returns false .
Call Array. Another way to conditionally add items conditionally to a JavaScript array is to use the push method. Then 'bar' is appended to items but 'false' isn't . This is because the first conditionally has true as the conditional and the 2nd one has false as the condition. Therefore items is [“foo”, “bar”] again.
The memory address of the first element of an array is called first address, foundation address, or base address. Because the mathematical concept of a matrix can be represented as a two-dimensional grid, two-dimensional arrays are also sometimes called matrices.
Try this:
my_array.find{|x| x.some_test } Or here's a shortcut (thanks @LarsHaugseth for reminding about it)
my_array.find(&:some_test) As for me find sounds confusing. As i am expecting receive more than one object for such a request.
I prefer to use detect for getting distinct one.
And select for finding all of them.
Here what ruby docs tells about them:
detect(ifnone = nil) {| obj | block } → obj or nil click to toggle source find(ifnone = nil) {| obj | block } → obj or nil detect(ifnone = nil) → an_enumerator find(ifnone = nil) → an_enumerator Passes each entry in enum to block. Returns the first for which block is not false. If no object matches, calls ifnone and returns its result when it is specified, or returns nil otherwise.
find_all {| obj | block } → array click to toggle source select {| obj | block } → array find_all → an_enumerator select → an_enumerator Returns an array containing all elements of enum for which block is not false
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