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How to get a json string from url?

... If you're using .NET 4.5 and want to use async then you can use HttpClient in System.Net.Http: using (var httpClient = new HttpClient()) { var json = await httpClient.GetStringAsync("url"); // Now parse with JSON.Net } ...
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How to determine if binary tree is balanced?

... move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced. ...
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How to clear basic authentication details in chrome

...th. I now want to remove the basic authentication details from the browser and try a different login. 20 Answers ...
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Ruby on Rails: How do I add placeholder text to a f.text_field?

...to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text? ...
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Is there a “default” MIME type?

...eally add anything over this, except to confuse clients who don't support random unofficial MIME types. Ditto for application/binary; it's just a non-standard way of restating "octet-stream". This is the answer to "What can I put in the Content-Type: header if I can't find an existing content type...
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How to empty (“truncate”) a file on linux that already exists and is protected in someway?

...e it's from csh, so you would do: cat /dev/null >! file If I'm wrong and you are using bash, you should do: cat /dev/null >| file in bash, you can also shorten that to: >| file share | ...
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Soft hyphen in HTML ( vs. ­)

... @gclj5 I just tested find on a ­ word in Chrome v21, and it correctly ignores the soft hyphen. Not sure about IE, FF and other browsers though. – evanrmurphy Oct 23 '12 at 21:01 ...
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html - table row like a link

I can't set my table row as link to something. I can use only css and html. I tried different things from div in row to something another, but still can't make it works. ...
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How to convert a clojure keyword into a string?

...on: Invalid token: :foo/bar/baz (namespace :foo.bar/baz) => "foo.bar" And this also works with namespace qualified keywords: ;; assuming in the namespace foo.bar (namespace ::baz) => "foo.bar" (name ::baz) => "baz" ...
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How do you set a default value for a MySQL Datetime column?

...s can be a problem if your system has to store birthdates, or you have to handle something like the payment plan for a 30-year mortgage. dev.mysql.com/doc/refman/5.0/en/datetime.html – Kip Sep 27 '11 at 17:01 ...