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Returning first x items from array
I want to return first 5 items from array. How can I do this?
5 Answers
5
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Why are mutable structs “evil”?
...he mutable object into a read-only wrapper, which is ugly and cumbersome.
Arrays of structures offer wonderful semantics. Given RectArray[500] of type Rectangle, it's clear and obvious how to e.g. copy element 123 to element 456 and then some time later set the width of element 123 to 555, without...
JavaScript post request like a form submit
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What about arrays in data params? Jquery post() interprets e.g.: "data: {array: [1, 2, 3]}" as ?array=1&array=2&array=3. Whis code gives another result.
– Scit
Oct 14 '15 at 6:36
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PHP Constants Containing Arrays?
...the accepted answer, it's worth noting that in PHP 5.6+ you can have const arrays - see Andrea Faulds' answer below.
You can also serialize your array and then put it into the constant:
# define constant, serialize array
define ("FRUITS", serialize (array ("apple", "cherry", "banana")));
# use it...
Iterating C++ vector from the end to the beginning
...iterator`
}
This pattern is useful, for example, for reverse-indexing an array using an unsigned index
int array[N];
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// Iterate over [0, N) range in reverse
for (unsigned i = N; i-- != 0; ) {
array[i]; // <- process it
}
(People unfamiliar with this pattern often insist on using signed...
how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
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How to add elements to an empty array in PHP?
If I define an array in PHP such as (I don't define its size):
8 Answers
8
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Get characters after last / in url
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array_pop(explode("/", "http://vimeo.com/1234567")); will return the last element of the example url
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A semantics for Bash scripts?
...he assignment
$ echo $foo
20
$ echo "${foo:0:1}" # Still just a string
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Arrays
Arguments and Positional Parameters
Before talking about arrays it might be worth discussing positional parameters. The arguments to a shell script can be accessed using numbered parameters, $1, $2, $3, etc. You can ...
How can I remove a key and its value from an associative array?
Given an associative array:
6 Answers
6
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