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Why not infer template parameter from constructor?

my question today is pretty simple: why can't the compiler infer template parameters from class constructors, much as it can do from function parameters? For example, why couldn't the following code be valid: ...
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How do I have an enum bound combobox with custom string formatting for enum values?

In the post Enum ToString , a method is described to use the custom attribute DescriptionAttribute like this: 21 Answers...
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How can you do anything useful without mutable state?

I've been reading a lot of stuff about functional programming lately, and I can understand most of it, but the one thing I just can't wrap my head around is stateless coding. It seems to me that simplifying programming by removing mutable state is like "simplifying" a car by removing the dashboard:...
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Git Commit Messages: 50/72 Formatting

...2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 ...
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Finding all objects that have a given property inside a collection [duplicate]

I have some complicated object, such as a Cat, which has many properties, such as age, favorite cat food, and so forth. 2...
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Implementing MVC with Windows Forms

...2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 ...
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Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)

Why python 2.7 doesn't include Z character (Zulu or zero offset) at the end of UTC datetime object's isoformat string unlike JavaScript? ...
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How to parse/format dates with LocalDateTime? (Java 8)

Java 8 added a new java.time API for working with dates and times ( JSR 310 ). 7 Answers ...
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?? Coalesce for empty string?

...n. – Justin Morgan Jan 10 '17 at 16:43  |  show 1 more comment ...
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How to escape JSON string?

Are there any classes/functions available to be used for easy JSON escaping? I'd rather not have to write my own. 14 Answer...