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How to check if an array field contains a unique value or another array in MongoDB?
...ee that they mention that the field you are using as your search can be an array, and how that is handled. "field : { $in : array }". What happens when you search for an array within an array of arrays? Not specified.
– Zut
Aug 14 '12 at 21:13
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Explode string by one or more spaces or tabs
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$parts last element will be blank .. so to remove it array_pop($parts);
– user889030
Sep 7 '16 at 9:25
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JavaScript - cannot set property of undefined
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You have to set d[a] to either an associative array, or an object:
d[a] = [];
d[a] = {};
Without setting, this is what's happening:
d[a] == undefined, so you're doing undefined['greeting']=b; and by definition, undefined has no properties. Thus, the error you rec...
How can I parse a JSON file with PHP? [duplicate]
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To iterate over a multidimensional array, you can use RecursiveArrayIterator
$jsonIterator = new RecursiveIteratorIterator(
new RecursiveArrayIterator(json_decode($json, TRUE)),
RecursiveIteratorIterator::SELF_FIRST);
foreach ($jsonIterator as $key =...
How to join int[] to a character separated string in .NET?
I have an array of integers:
11 Answers
11
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C# Iterating through an enum? (Indexing a System.Array)
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Array values = Enum.GetValues(typeof(myEnum));
foreach( MyEnum val in values )
{
Console.WriteLine (String.Format("{0}: {1}", Enum.GetName(typeof(MyEnum), val), val));
}
Or, you can cast the System.Array that is returne...
Does JavaScript have a built in stringbuilder class?
...de for Internet Explorer make sure you chose an implementation, which uses array joins. Concatenating strings with the + or += operator are extremely slow on IE. This is especially true for IE6. On modern browsers += is usually just as fast as array joins.
When I have to do lots of string concaten...
How to sort a NSArray alphabetically?
How can I sort an array filled with [UIFont familyNames] into alphabetical order?
7 Answers
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How to remove all null elements from a ArrayList or String Array?
...ng.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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How do I do a bulk insert in mySQL using node.js
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Bulk inserts are possible by using nested array, see the github page
Nested arrays are turned into grouped lists (for bulk inserts), e.g.
[['a', 'b'], ['c', 'd']] turns into ('a', 'b'), ('c', 'd')
You just insert a nested array of elements.
An example is giv...