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How best to determine if an argument is not sent to the JavaScript function

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Using an integer as a key in an associative array in JavaScript

... 132 Use an object, as people are saying. However, note that you can not have integer keys. JavaScri...
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How can I count the occurrences of a list item?

...you only want one item's count, use the count method: >>> [1, 2, 3, 4, 1, 4, 1].count(1) 3 Don't use this if you want to count multiple items. Calling count in a loop requires a separate pass over the list for every count call, which can be catastrophic for performance. If you want to co...
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C# Sanitize File Name

I recently have been moving a bunch of MP3s from various locations into a repository. I had been constructing the new file names using the ID3 tags (thanks, TagLib-Sharp!), and I noticed that I was getting a System.NotSupportedException : ...
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What exactly does Perl's “bless” do?

... | edited May 23 '17 at 11:54 Community♦ 111 silver badge answered Dec 24 '08 at 19:58 ...
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Check if table exists without using “select from”

... 330 If you want to be correct, use INFORMATION_SCHEMA. SELECT * FROM information_schema.tables W...
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How to make Twitter Bootstrap menu dropdown on hover rather than click

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.NET / C# - Convert char[] to string

... answered Aug 24 '09 at 18:39 Joel CoehoornJoel Coehoorn 350k103103 gold badges521521 silver badges756756 bronze badges ...
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SQL Switch/Case in 'where' clause

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How to convert int[] to Integer[] in Java?

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