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How to check file MIME type with javascript before upload?
I have read this and this questions which seems to suggest that the file MIME type could be checked using javascript on client side. Now, I understand that the real validation still has to be done on server side. I want to perform a client side checking to avoid unnecessary wastage of server res...
SQL - many-to-many table primary key
This question comes up after reading a comment in this question:
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How to check if PHP array is associative or sequential?
... @OderWat - Your optimization should use array_key_exists instead of isset because if the zero element is a null value, the isset will return false incorrectly. A null value should ordinarily be a legitimate value in such an array.
– OCDev
Sep 3 '17...
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
I have been reading a lot about iOS7 UI transition.
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In C#, why is String a reference type that behaves like a value type?
...haracteristics of a value type such as being immutable and having == overloaded to compare the text rather than making sure they reference the same object.
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Mongodb Explain for Aggregation framework
...ng your schema if complicated aggregation gymnastics are required).
Taking advantage of newer aggregation operators if you have upgraded your MongoDB server. For example, MongoDB 3.4 added many new aggregation stages and expressions including support for working with arrays, strings, and facets.
T...
How to publish a website made by Node.js to Github Pages?
I made a website using Node.js as the server. As I know, the node.js file should start working by typing commands in terminal, so I'm not sure if Github Pages supports node.js-hosting. So what should I do?
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Why would I ever use push_back instead of emplace_back?
... difference between these two statements in terms of generated code. The traditional wisdom is that push_back will construct a temporary object, which will then get moved into v whereas emplace_back will forward the argument along and construct it directly in place with no copies or moves. This may ...
Append values to query string
... Darin DimitrovDarin Dimitrov
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X-Frame-Options Allow-From multiple domains
...n ASP.NET 4.0 IIS7.5 site which I need secured using the X-Frame-Options header.
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