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getting type T from IEnumerable

... Or even worse write a method with yield returns and try to call GetType on a variable created with this method. It will tell you that it is not event a generic type. So basically there is no universal way to get T given an instance variable of type IEnumerable<T> ...
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How to check for a valid Base64 encoded string

...to see if a string is Base 64 encoded other than just trying to convert it and see if there is an error? I have code code like this: ...
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Best way to select random rows PostgreSQL

I want a random selection of rows in PostgreSQL, I tried this: 12 Answers 12 ...
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Can I use git diff on untracked files?

...diff output, or is my best bet to use git add on the newly created files and the existing files I have edited, then use: ...
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PHP server on local machine?

I'm trying to build a PHP site and I'm wanting to test my PHP files without uploading them to my host. Basically testing them on my own machine before I upload them. How do I do that? ...
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How to hide a in a menu with CSS?

...: none. FF won't do it (technically invalid HTML, per the spec) but Chrome and IE will and it will hide the option. EDIT: Oh yeah, I already implemented this in jQuery: jQuery.fn.toggleOption = function( show ) { jQuery( this ).toggle( show ); if( show ) { if( jQuery( this ).parent...
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How to create P12 certificate for iOS distribution

We have an iOS app whose push notification cert has expired and we're trying to create a new one. I've created new certs in the Provisioning portal (ios_developer.cer, ios_distribution.cer) and downloaded them. I was following instructions here on Stack Overflow to convert it to PEM and then to ...
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What is the difference between and ?

What is the difference between <section> and <div> in HTML ? Aren't we defining sections in both cases? ...
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SQL - Query to get server's IP address

...u the IP Address; This will work for a remote client request to SQL 2008 and newer. If you have Shared Memory connections allowed, then running above on the server itself will give you "Shared Memory" as the value for 'net_transport', and NULL for 'local_net_address', and '<local machi...
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git log of a single revision

...it c. I want to get the changeset of that exact commit c + metainformation and no other one. Is there a simpler way than git log -p c^..c to do that? ...