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String concatenation in Ruby
...s of strings you often can gain performance by appending the strings to an array and then at the end put the string together atomically. Then << could be useful?
– PEZ
Dec 18 '08 at 13:12
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Remove blank attributes from an Object in Javascript
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5) Doesn't work with arrays (Object.keys will return array position numbers as the key for the elements). Possibly others have this problem, but I found this when testing 5.
– Eelco
Jun 13 '19 at 19:25
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Comparing mongoose _id and strings
...you can do with your code. For example, you would not be able to search an array of Object Ids by using the equals method. Instead, it would make more sense to always cast to string and compare the keys.
Here's an example answer in case if you need to use indexOf() to check within an array of refe...
Why can Java Collections not directly store Primitives types?
...find that many people think they want Map<int,T>, forgetting that an array will do that trick very nicely.
– DJClayworth
Jan 4 '11 at 16:48
2
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define() vs. const
...R';
define('A\B\C\FOO', 'BAR');
Since PHP 5.6 const constants can also be arrays, while define() does not support arrays yet. However, arrays will be supported for both cases in PHP 7.
const FOO = [1, 2, 3]; // Valid in PHP 5.6
define('FOO', [1, 2, 3]); // Invalid in PHP 5.6 and valid in PHP 7....
How do I pass multiple parameters into a function in PowerShell?
... @samyi No. Passing a (1,2,3) to a function is effectively treated as an array; a single argument. If you want to use OO method style arguments, use modules: $m = new-module -ascustomobject { function Add($x,$y) { $x + $y } }; $m.Add(1,1)
– x0n
Mar 19 '14 at ...
json.net has key method?
...assignment. And no, the accepted answer isn't checking if the key is in an array... it's still using a normal indexer. Just because it looks like array access doesn't mean it is array access. (Array access can't be by a string in the first place.)
– Jon Skeet
A...
How to print the values of slices
... the %v, %+v or %#v verbs of go fmt:
fmt.Printf("%v", projects)
If your array (or here slice) contains struct (like Project), you will see their details.
For more precision, you can use %#v to print the object using Go-syntax, as for a literal:
%v the value in a default format.
when printin...
C# LINQ find duplicates in List
...ow just a wonder, let's say that duplicated int are distributed into n int arrays, im using dictionary and for loop to understand which array contains a duplicate and remove it according to a logic of distribution, is there a fastest way (linq wondering) to achieve that result ? thank you in advance...
Removing items from a list [duplicate]
...t throw an UnsupportedOperationException if you have your list formed from Arrays.asList(arr) because Arrays.asList() gives you a fixed list. In that case, do an List<E> myList = new ArrayList<>(Arrays.asList(arr)) and then use the listIterator over the list. Same goes if you want to rep...