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Get file size, image width and height before upload

... when the value of i is alerted in the callback function reader.onload it shows a random increment! e.g. for 4 files the value as alerted was 0 3 2 1 . Can any one explain that? – freerunner Mar 2 '14 at 11:16 ...
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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'

...ntains a SelectList with the same name as your DropDownList i.e. "submarket_0", the Html helper will automatically populate your DropDownList with that data if you don't specify the 2nd parameter which in this case is the source SelectList. What happened with my error was: Because the table contai...
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How to get all count of mongoose model?

...if you are using promise or userModel.count({}); // if you want to get all counts irrespective of the fields On the recent version of mongoose, count() is deprecated so use userModel.countDocuments({name: "sam"}); s...
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How to know what the 'errno' means?

When calling execl(...) , I get an errno=2 . What does it mean? How can I know the meaning of this errno ? 15 Answers ...
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What is the difference between 'typedef' and 'using' in C++11?

... All standard references below refers to N4659: March 2017 post-Kona working draft/C++17 DIS. Typedef declarations can, whereas alias declarations cannot, be used as initialization statements But, with the first two non-temp...
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Using isKindOfClass with Swift

... Another approach using the new Swift 2 syntax is to use guard and nest it all in one conditional. guard let touch = object.AnyObject() as? UITouch, let picker = touch.view as? UIPickerView else { return //Do Nothing } //Do something with picker ...
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Undo git update-index --skip-worktree

... are marked with S. Edit: As @amacleod mentioned, making an alias to list all the hidden files is a nice trick to have so that you don't need to remember it. I use alias hidden="git ls-files -v | grep '^S'" in my .bash_profile. It works great! ...
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Map enum in JPA with fixed values?

I'm looking for the different ways to map an enum using JPA. I especially want to set the integer value of each enum entry and to save only the integer value. ...
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include external .js file in node.js app

...obal variable. If you want a global variable then write global.foo. but we all know globals are evil. If you are someone who uses globals like that in a node.js project I was on I would refactor them away for as there are just so few use cases for this (There are a few exceptions but this isn't one...
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Java SimpleDateFormat(“yyyy-MM-dd'T'HH:mm:ss'Z'”) gives timezone as IST

... edited Jan 22 '15 at 3:26 AZ_ 34.4k2828 gold badges150150 silver badges197197 bronze badges answered Oct 1 '13 at 11:41 ...