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mongoDB/mongoose: unique if not null

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Why does base64 encoding require padding if the input length is not divisible by 3?

What is the purpose of padding in base64 encoding. The following is the extract from wikipedia: 3 Answers ...
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How to update gradle in android studio?

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What is the best way to create constants in Objective-C

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When to use window.opener / window.parent / window.top

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The written versions of the logical operators

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MySQL foreign key constraints, cascade delete

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When do I use a dot, arrow, or double colon to refer to members of a class in C++?

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MongoDB/NoSQL: Keeping Document Change History

...ou change its value. A document could look something like this: { _id: "4c6b9456f61f000000007ba6" title: [ { version: 1, value: "Hello world" }, { version: 6, value: "Foo" } ], body: [ { version: 1, value: "Is this thing on?" }, { version: 2, value: "What should I write?" },...
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Convert.ChangeType() fails on Nullable Types

... 416 Untested, but maybe something like this will work: string modelProperty = "Some Property Name...